Tips, guides and reports for people repairing televisions and electronic equipment TELEYISIO AND HOME ELECTRONICS REPAIR JUNE 2003 £3.20 New technology from

Low -drop linear regulators The ChipQuick desoldering technique

Build this PAT tester 06 The Panasonic

Euro-4H chassis 97700326413 Satellite, Audio, Monitor, TV, VCR and DVD faults Ifever youneeded proof that thererea substitute for the original

Dave here may look somewhat like the man himself, but when he breaks into song you'll agree, he'll never be a patch on the original.

Illustratingour pointperfectlythat sometimes a substitute justisn't good enough. That's why the comprehensive and cost effective range of Classic DVD and CD lasers are all originals, making them the obvious choice. Contact your usual Classic, distributor quoting the type number of the laser you require and ask for the Classic original. Watch your post for your free copy of our laser listing or contact us for an advance copy.

For more information on the entire Classic range or details of a distributor near you, call 01635 278678, visit us on the web; www.classic-electronics.co.uk or email us at sales©classic-electronics.co.uk classic

Technical helpline 01635 278678 CONTENTS June 2003 Vol. 53, No. 8

451 Comment 478 All about low -drop linear An adventurous life. regulators Editor 452 Teletopics If you are not careful you can get instability problems with low -drop linear voltage regulator John A. Reddihough The analogue TV switch -off. Grundig's insolvency. ICs. The reasons for this lie in the frequency and Combined screen/speaker system. DVD update. phase characteristics of the feedback loop in the IC and the characteristics of the output capacitor used. Advertisement Sales Ray Porter, M.Sc., C.Eng., MIEE, explains the 454 The ChipQuick SMD removal kit theory and describes the practical points that need Reuben Gurunlian Component removal problems have got worse with to be observed. 0208 722 6028 the increased use of sophisticated surface -mounted ICs. Some of them have a couple of hundred pins, Fax 0208 770 2016 and you may find it necessary to replace one 482 DX and Satellite Reception simply to confirm a diagnosis. It's a formidable The Gulf War dominates this month's reception Publishing Director task but, as Steve Beeching, I.Eng., MIEE has reports. Broadcast news. Latest ways of providing discovered, there's a solution - the ChipQuick kit. live video news via satellite. PC MPEG decoder Tony Greville cards. Aerial -based noise -cancelling systems. 456 Latest technology from Sony Roger Bunney reports. Managing Director 486 DVD faults Roy Greenslade

487 Letters A warning on the provision of guarantees. TiVo Note that we are unable to could have been a winner. Car radios. answer technical queries over the telephone and cannot 489 Monitors provide information on spares Every year Sony hosts a major European event in Guidance on repairing monitors and related equipment. Berlin, where new products are unveiled and other than that given in our advances in CE technology are introduced. George Spares Guide. Cole reports on this year's presentation. 492 VCR Clinic

493 Test Case 486 Disclaimer 460 The Panasonic Euro-4H chassis We work hard to ensure that the The 4H version of the Euro-4 chassis incorporates 494 TV fault finding information presented in Television 100Hz scanning. An added PCB takes over from is accurate. However, Television's the previous video processor/RGB publisher - Highbury Business processor/timebase generator chip. Brian Storm 498 Web service Communications - will not take describes the change and what it involves. Useful websites for TV professionals, technicians responsibility fo-r any injury or loss and enthusiasts. of earnings that may result from 462 Help wanted applying information presented in 500 Audio faults the magazine. It is your Hints and tips on repairing professional and responsibility to familiarise yourself 469 Service Casebook consumer equipment. with the laws relating to dealing Michael Maurice selects interesting items from his with your customers and suppliers, notebook. and with safety practices relating 502 Satellite notebook to working with Digibox fault reports. Digital channel update. C - electrical/electronic circuitry - 470 Practical PAT testing band transmissions from Atlantic Bird 3 at 5°W. particularly as regards electric Ian Rees concludes his guide, with details of an easy - Middle East newsfeeds. shock, fire hazards and explosions. to -build tester. 474 Books to buy 505 Next month in Television 476 Test report: 506 What a life! A further batch of emails brings all manner of the Sony RM- subjects to the fore, including customer problems VL700T universal and humour, cat's -whisker and other early radio RC unit receivers, camerawork and filmmaking, and the Jeff Scoins finds the ideal decline in broadcasting standards. Also possible Next issue, dated problems with use of the Astra 2D satellite. Donald universal remote -control July, on sale June 18 unit in the Sony range. Bullock's monthly commentary.

TELEVISION June 2003 449 Clearance Sale - 20 Remote Controls £20.00 (mixed all well known brands) HITACHI A -ABATTERIES5p each FERGUSON VIDEO DECKS AMSTRAD ADAPTOR - VPT - TEXT - AIWA 1500 UE33-BO I £3.00 NEW TYPES MAIN SWITCHES VA354 £2.00 MATSUI VXA 1100 MRF7-7E33 10 MIXED £2.00 CAMCORDER BATTERY HIGH MATSUI 1500 MATSUI ORION VIDEO TUNER IF VT311-VT210-VT311 CAPACITY 9.6V 1800MA-VA310 ORION D1094 £5 £9 POST £5.00 REEL DRIVE £2.00 £3.00 ORION D1096 FERGUSON ZSK2761 CAMCORDER BATTERY CHARG- ORION D2096 ETC IF2105-RE £5.00 600v/lOamp N FETS £100 CAPSTAIN MOTOR FOR ABOVE MTP201 I -APO() £5.00 £5.00 ER 9.6 VOLTS VAZ65 EACH £6.00 TDA 8362N DECKS £8.00 UHF - ICC5 £5.00 15p CAMCORDER CAR ADAPTOR 24CO2 20 HIGH VOLTAGE CAPS 1500V - VHF - ICC5 £5.00 TDA8I78S £5.00 CHARGER - AND BATTERY- 2000V MIXED £1.00 TX85, TX86, TX89, TX90 £3.00 VA308 TDA2653A EACH £4.00 TDA4866 £3.00 £5.00 TX98, T99, TX100 EACH £4.00 MITSUBISH VIDEO CAMCORDER LENS 20FF - FILTERS HEAD & DRUM 948B231820 £10.00 TELE-CONVERSION LENS x1.4 & FERITE CABLE CLAMPS EACH 30p ORION 1500 - UE33 B09 £4.00 HEAD 928B654080 £5.00 x0.7 £1.00 PANASONIC UNIT GUM IDLER £2.00 CARDIOID CAMERA MICRO- HANDSETS SMALL UHF/VHF £3.00 LOPT CT2145 £5.00 PHONE -VA SUPER 218 TELE- 3 IN ONE PHILIPS UNIVERSAL HANDS SET £5.00 FERGUSON CT246 £5.00 SCOPIC BOOM & STAND £5.00 DECCA DOUBLE SIDE NICAM £10 PHILIPS TUNERS NTSC FS936E CHROME BOARD-ICCS NICAM LCD £4.00 ICC5 NICAM SINGLE BOARD ICC5 £3.00 I/Cs U4647TKF OR HA11498 £6.00 FERGUSON £10 PHILIPS TUNER U1343/5 31-39-147- DECK AND CAPSTAN MOTOR: 15281 £3.50 BSB £1.50 TATUNG FV61LV- FV62LV, FV67LV 10 OFF NEW TYPE HAND SETS FV4IR/3V59 £10.00 UNIVERSAL 205 OR EQUIVALENT FV68LV MITSUBISHI £5.00 + £5.00 POST FV4 I R/FV42-FV51-52 WITH AERIAL SOCKET £3.00 NEW CHASSIS TUNER EACH £30.00 ICC5 £7.00 ALL COMPONENTS AND LOPT FV70B, FV71LV, FV72LV, [K2000, IK7000 EACH £4.00 TELEVISION MAINS LEAD WITH CT2IAVIBS1 £6.00 POST £5.00 FV74LVX SRD2, SRD3, SRD4 EACH £1.00 MOULDED PLUG 2'/2 METRES CT28AVIBSJ EACH £30.00 T780 £2.00 LONG 20p EACH CAR IMMOBILISER WITH KEY FV77HV £30.00 TV/SATELLITE WITH FST £3.00 3 CORE COMPUTER MAINS LEAD £5.00 FV3IR £12.00 HITACHI 2'/2 METRES LONG £1 EACH TUNER UE25-B56D £3.00 HEAD AND DRUM CPT2158 (NO REPLACEMENT) FERGUSON ICC 7 HAND SET £3.00 MODULATOR-SATELLITE-T1040- £5.00 MOTORS SRD3/4 £2.00 FERGUSON VIDEO VIDEO RM933E VIDEO PLUS HITACHI PANEL-T1228B FV90 LV HAND SET £3.00 £30.00 CAPSTAN 150E £3.00 TEXT FOR TX89, TX98, TX99, FV80 LV HAND SET £3.00 MATSUI MATSUI BRIDGE RECTIFIERS 10 FOR £1.00 TX100 £6.00 1500 £5.00 CAPSTAN I/C NO. M56730 ASP CAMCORDER -UNIVERSAL PANEL -TUBE BASE-ICC5 £5.00 VSR 1500 £4.00 £15.00 BATTERY 9.6V - 1400MA FOR PANEL-TUBE-BASE-TX89, TX98, VX3000 £3.00 2 TYPES 1995 TO 1997 MODELS JVC-PANASONIC-PHILIPS£5.00 TX99 £5.00 3000/ORION - TV AND VIDEO £2.00 MATSUI VIDEO DECKS WITH DESOLDER PUMP £2.00 PANEL -TUNING 1509G-TX9, TXIO RC = PACE 900, FERGUSON, CAPSTAN MOTOR AND HEAD FILTERS - 455 & 480 EACH 10p £5.00 SONY, GRUNDIG £5.00 P/P £5.00 £20.00 GAS SOLDER IRON-PORTASOL PUSH BUTTON UNIT-TX85, TX86 - MITSUBISHI MITSUMI HOBBY £10.00 8 BUTTONS £5.00 RM35 - VIDEO £5.00 MOD MRF7-UF32 £5.00 INFRA RED DETECTOR NOKIA MOD TMUG3-103A £5.00 WIDE/SHORT ANGLE WITH HITACHI RC202 £4.00 MITSUBISHI RELAY £5.00 DECODER -TELETEXT PC232A5 - VP9401 CAPSTAN-HSE4I-I/C MSI782ASP INFRA RED RECEIVER-MATSUMI ISSUE 4 £15.00 DI096 12.1111 MINIATURE £1.00 HEAD AND DRUM - 620E £12.00 VXA 1100 PANEL -1K2-FM221 I STEREO £5.00 TELETEXT CONVERSION KIT AND VIDEO PLUS 12vto 15 D.C. PSU AC 9V IA £1.50 SAMSUNG TV MODULATOR WITH LEADS QUARTZ HALOGEN - £3.00 CORE 2 904 ITT TEXT PANEL £3.00 HANDSETS, TV & VIDEO - 12 VIDEO IV 75R 500W 200V FOR OUTDOOR AUDIO IV 10K 1996/7 MATSUI TYPES EACH £3.00 LAMPS £1.00 COMPLETE REPAIR KIT, CLUTCH HVIO0 £3 EACH RELAYS -SUB MINIATURE 25p VIDEO CHASSIS WITH TUNER-IR POST £4.00 £5.00 AND PINCH ROLLER, IDLER SATELLITE TUNER UNIT -2427611 TV AERIAL AMPS VHF /UHF MATSUI - ORION D2906 MATSUI £7.00 .... BASE BAND/VIDEO OUT 1 WAY 20dB EACH £5 £3.00 DECKS WITH HEADS - TUNERS 2 WAY18dB EACH £5 HITACHI D1096 VXA110 VP 9401 £16.00 IF TERC8-022A TBJZA-00ZA-ALPS 4 WAY 10dB EACH £5 AC ADAPTOR 19v DC 2.5A SW HEAD-VSR 1500 = ORION D2096 £3.00 8 WAY4dB EACH £5 MODE £3.00 £5.00 SATELLITE SXT2302 180968£3.00 240v MAINS SCART TO 4 PHONO LEADS 1.5M PANEL-MAIN-VSR 1500 SATELLITE £3.00 P/P £5.00ea £3.00 SCART TO 6 PHONO LEADS £3.00 WITH BASE BAND MIN COMPUTER 3 PIN MAINS LEADS SCART TO "D" PLUG £1.00 SXT2302234 £4.00 2'A METRES LONG - GREY SCART TO SCART LEADS - SAMSUNG TECUS983 VA24A SMALL UNF/VHF £3.50 EACH £1.50 ALL PINS CONNECTED VHF -Tuner with Aerial Socket VHF/UHF - TEKE4- 112A £4.00 2 METRES LONG - BLACK - 1.5 METRES UHF Fit most new TV's £5.00 4944 EACH £1 MODULATORS £2.00 U321, U341, U342, U343 1 SOUND 5.5MHZ MPM 1000T £1.00 FERGUSON NICAM MODULE III U344, U4I I, U412. U944 J EACH £2 SCART TO SCART - ALL PINS -I SOUND 6.0MHZ MPM 104011.90 Art No 989 591-E00 £5.00 U743, 7744 METRE EACH 6111 No accounts SENDZ COMPONENTS No Credit Cards 63 BISHOPSTEIGNTON, SHOEBURYNESS, ESSEX SS3 8AF Tel: 01702 332992Fax: 01702 338805 Specific P/P charges are PER ITEM For UK addresses add P/P to order then 17.5% VAT to total. This applies to EC unless VAT No. is given Exports - P/P at cost Postal Order/Cheque with order. Unless otherwise specified add £1.70 P/P to SMALL ORDERS Additional P/P for HEAVIER GOODS. Technical information by telephone only Government/School Orders on official headings. Callers to shop - 212 London Road, Southend-on-Sea Open Saturday Only 10-12 noon - 2-5pm. PLEASE ADD 17.5% VAT TO BOTH THE GOODS TOTAL AND P/P CHARGE An adventurous life The death of Cecil Howard Green on 12 retirement in 1975. This was a period of April in La Jolla, California, at 102 years vast growth and success for TI, and Cecil of age, brought to an end an eventful and Green became very rich. full life that spanned the entirety of Texas Instruments is of course famed as electrical/electronic engineering in the one of the major semiconductor companies. twentieth century. He is best known as one It was one of the first to start of the founders of Texas Instruments, manufacturing transistors, in the early which did so much to drive semiconductor Fifties, and was involved in major R&D technology in its initial phase and remains work from the start of this new era in A life that spanned the entirety of one of the leading firms in the field. electronics, developing semiconductor Cecil Green was actually born in the fabrication technology such as the electrical/electronic engineering UK, in a suburb of Manchester, in 1900, silicon planar process. The first in the twentieth century the only son of Charles Green, an electrical experimental IC was developed by TI, engineer, and his wife Maggie. The family and by the early Sixties the company emigrated to in 1902 and moved was producing chips with forty or so about frequently, throughout the US and transistors in a wafer 0.18in. long by Cecil Green's lifework took him from Canada, as Charles Green sought work. In 0.06in. wide, getting forty of them out of a steam -turbine generators to sophisticated 1906 they were present when the famous lin. diameter silicon slice. That was the ICs. Phew! He didn't idle away his time earthquake devastated , an beginning of the IC revolution, and TI after retirement however. He remained an event that Cecil Green recalled vividly registered 'solid circuit' as a trademark. TI honorary director of TI but his main throughout his life. The family eventually was the first US firm to produce a efforts, with his wife Ida whom he had settled in , where Cecil Green transistor radio, in 1954. Other innovations married in 1926, were devoted to attended the King Edwards High School. included pocket calculators and the Speak educational and philanthropic causes. He is He entered the University of British. & Spell educational toy. The company reputed to have given away over $200m by Columbia in 1918, and during the summers supplied systems for the Apollo moon the time of his death. Some fifty academic, assisted his father, planning to become an landing, and produced the first medical and civic buildings benefited, 28 electrical engineer. On the advice of his microcomputer chip in 1974. professorships were endowed, hundreds of tutors he transferred to the newly -renamed By the time that Cecil Green retired in studentships were created, and there were Massachusetts Institute of Technology 1975 TI had over 50,000 employees and numerous donations of equipment. The (previously the Boston Tech), from which subsidiaries throughout the world, including MIT has the twenty -storey Cecil H. and Ida he graduated in 1924 with Bachelor's and the UK where Texas Instruments Ltd., F. Green Building for Earth Sciences, and Master's degrees in electrical engineering. Bedford, contributed to the R&D work, Oxford University has the Green College. Whilst at the MIT Cecil Green mainly in industrial electronics. TI is still a Cecil H. Green was awarded an honorary undertook on-the-job training at General leader in its field, with an annual turnover KBE in 1991 for services to philanthropy.

Electric, Schenectady, New York, and on of some $8bn and over 40,000 employees. A remarkable life indeed. graduation went to work for GE. His first job there involved the design of steam - COPYRIGHT SUBSCRIPTIONS turbine electrical generators. Within two Highbury Business Communications, 2003. All Highbury Subscription Services, Link House, years he moved to the Raytheon rights reserved. No part of this publication may be 8Bartholomew's Walk, Ely, Manufacturing Company, which had only reproduced, stored or transmitted in any form or Cambridge CB7 4ZD. by any means without the written permission of Telephone 01353 654 431 just been established, to work on small the publishers. electronics devices. Here he was assistant All reasonable precautions are taken by Television Fax 01353 654 400 to Charles Litton, who subsequently to ensure that the advice and data published are Email [email protected] founded Litton Industries. He didn't stay reliable. We cannot however guarantee it and we Please notify change of address. cannot accept legal responsibility for it. there too long however and, after working Subscription rates: for various other electrical firms across the CORRESPONDENCE UK 1 year £33.80, 2 years £53.00, US, including the Federal Telegraph All correspondence regarding advertisements 3 years £71.00. should be addressed to the Advertisement Company in Palo Alto, he moved to Manager, Television, Highbury Business Republic of Ireland 1 year £38.95, 2 years Geophysical Service Inc. (GSI), Texas, in Communications, Anne Boleyn House, 9-13 Ewell £62.00, 3 years £81.85. 1930. Road, Cheam, Surrey, SM3 8BZ. Editorial Mainland Europe 1 year £48.00, 2 years This firm was an oil exploration and correspondence should be addressed to £77.00, 3 years £102.90. Television, Editorial Department, Highbury Rest of World 1 year £63.50, 2 years instrumentation company that had Business Communications, Anne Boleyn House, pioneered reflection seismology. Shortly £99.00, 3 years £133.00. 9-13 Ewell Road, Cheam, Surrey, SM3 8BZ. Cheques should be made payable to after he joined it, the East Texas oil field INDEXES AND BINDERS Television. was discovered and the depression began to Indexes for Vols. 38 to 52 are available at £3.50 take its toll. GSI managed to survive each from SoftCopy Ltd., who can also supply an BACK NUMBERS however, despite the reduced call for its fifteen -year consolidated index on computer disc. If available issues are £4.00 each. services. During this period, in 1936, Cecil For further details see page 441. Binders that hold twelve issues of Television are Green became a naturalised US citizen. available for £6.50 each from Modern Bookbinders, The prospects for the company improved Pringle Street, Blackburn, B81 1SA. with the outbreak of World War II, when it Telephone: 01254 59 371 diversified into defence electronics. In Make cheques payable to "Television Binders". 1941 Cecil Green invested his life savings, Newstrade Enquires along with three partners, in buying the Distributed by COMAG HIGHBURY company - for $300,000. In 1951 they Telephone: 01895 444055 renamed it Texas Instruments. Cecil Green Business Communications remained an executive director until his ISSN 0032-647X A SUBSIDIARY Of HIGHBURY HOUSE COMMUNICATIONS PIC

TELEVISION June 2003 451 TELETOPICS The analogue TV switch -off A joint report by the ITC and the BBC, coverage; and the provision of public- households in the West Midlands to all - entitled Progress Towards Digital service channels in FTA form via digital digital TV reception. The households in the Switchover, has encouraged the government satellite transmissions. trial all had their sets converted to free -to - in its belief that close down of the analogue A research project, Go Digital, on view digital reception and were effectively TV services will be possible by 2010. The viewer's attitudes towards digital TV isolated from analogue transmissions for report reveals that more than forty per cent suggests that those who hadn't planned to live viewing. The findings will inform the of households already have digital TV convert to digital TV changed their minds joint government/industry Digital reception facilities, while nearly all have when they appreciated what it has to offer. Television Action Plan, which is intended access to at least one type of digital TV The project, which was co-ordinated by the to ensure that the government's criteria for service - terrestrial, satellite or cable. The ITC, studied the conversion of about 300 the digital switchover are met. report says that take-up has been rapid though the collapse of ITV Digital last year was a setback. The quick relaunch ofDTT as the FTA service Freeview, and its Grundig's insolvency subsequent success, has boosted digital TV Grundig, which has been making losses for Wales, where digital STBs and DVD figures but came too late for the report to be several years, has filed for bankruptcy. For players are being made. Max Grundig died able to take it fully into account. some time it had sought an investor to take in 1989. In 1984 Philips bought a major The aim of the report is to assist with up an interest in the company. It was in shareholding and assumed management planning for the digital switchover, talks, which eventually failed, with the control, then pulled out in 1997. In late focusing on the next five years. During this Taiwanese company Sampo; then, in 2000 the aerial and dish manufacturer period it expects digital take-up to rise to March, the Turkish manufacturer Beko Kathrein took a majority shareholding and between 58 and 78 per cent of households, Elektronik announced that it intended to control of the company. depending on various factors that include buy a majority stake to expand its interests the success of Freeview, a revived cable in Europe. In early April Beko decided sector that extends networks and achieves a against going ahead, "following an in- Amstrad wins BSkyB higher conversion rate to digital, continuing depth examination and evaluation", and subscriber acquisition by BSkyB, and the creditor banks decided not to extend orders prospect of Digital Subscriber Line (DSL) credits. Time and money had run out for Amstrad has been appointed a co - technology being established as a means of Grundig. supplier, with Pace, of Sky Plus set -top distributing digital TV. Talks with a view to securing the boxes, the ones that incorporate a hard This is still short of the 95 per cent take- survival of Grundig continue however. disk for recording. Amstrad up figure specified by the government as Eberhard Braun, an insolvency expert, has manufactures standard Sky STBs in being necessary before analogue taken over as chief executive. Now that it China. The company has also been transmissions are terminated, but the report has filed for insolvency the obligations of a appointed exclusive supplier of Sky's says that policy moves by the government potential investor, in particular with respect new combined keyboard and remote - could accelerate the take-up of digital TV. to pensions, have changed. control unit, the Sky Navigator. This Such measures might include the The company was founded in 1945 by unit, which has facilities for betting, text announcement of a firm switch -off date; Max Grundig, and at its peak in the messaging and emailing, will be a Sky making it a legal obligation to incorporate a Eighties employed 38,000 people. The upgrade option. The Sky Plus box digital decoder in all TV equipment sold; anworkforce has since been reduced to about seems to be doing well after a hesitant information campaign; a public 3,500. Grundig had plants in Germany, start. commitment to a high level of DTT Austria, Portugal and Llantrisant, South

Bri-Stor, the UK's largest manufacturer cabinets/drawers; Easi-Load rooftop of van racking and other vehicle ladder loading systems and other roof productivity -boosting equipment, usedequipment; the Euro-Clean self- this Ford Transit Connect van to contained hand -wash unit; sliding and demonstrate its products at the static internal racking systems; lining Service 2003 conference. According to systems, security equipment, sales director Bob King, research has additional lighting and tow bars. The shown that a Bri-Stor equipped van range of fixed and sliding van racking saves a field service engineer about a equipment is designed for individual quarter of an hour a day. Not only van models, using existing holes and because he can go straight to the part fixing points in the vehicle. The vehicle or tool required, but in addition more warranty is therefore not affected and, parts and equipment can be carried in if required, the van can easily be a properly equipped van. returned to its standard condition. Bri-Stor has an extensive range of For further information contact Bri- products that have been specifically Stor Systems Ltd. on 01889 271 202 or developed to suit most types of vans email sold in the UK. The range includes groupObri-stor.co.uk Euro-Stor van racking and storage

452 June 2003 TELEVISION DVD Update The idea of a hybrid DVD-Audio disc, with an extra layer that can be read by standard CD players, has been abandoned for the time being after research by a DVD Forum working party. Hybrid disc technology is in use with the SACD system: such discs have a layer that can be read by CD players and another that's compatible with SACD mom amis am. "!=-- players. DVD-Audio discs can contain high - resolution audio and a Dolby Digital The DVD Forum hasn't rejected the DVD-R, DVD-RAM, CD-R/RW, MP3 and soundtrack that can be played by a DVD- hybrid disc concept completely, and may WMA (Windows Media Audio). CDs can Video player. When test discs with an extra come up with alternative approach at a later be remastered using DSP technology to layer for CD players were tried out there date. `freshen' stereo quality. Dolby Digital and were playability problems. The trial Panasonic has launched a second - DTS soundtracks can be decoded, also involved ten DVD-Audio players and 133 generation DVD-Audio compatible Micro Dolby Pro -Logic 2 to enhance two -channel DVD-Video players provided by fifteen hi-fi system, Model SC-DT310 (see and regular surround -sound encoded companies, including Panasonic, Sony, picture), which consists of a DVD/CD material. Those with access to a Sky Plus Pioneer and Samsung. They showed that a player, an AV control receiver, and a 5.1 receiver can listen to broadcasts with Dolby high proportion of DVD players incorrectly speaker package. The digital amplifier can Digital surround sound by using the SC- read the discs as CDs, and many wouldn't deliver 400W. Discs and formats that can be DT310's optical digital input. An FM/AM play the discs at all. played include DVD-Video, DVD-Audio, digital tuner with RDS is incorporated.

Combined screen/speaker system [-- Computer monitors with a screen an LCD screen, with a small air gap in Correction assembly that doubles as a loudspeaker between. The acrylic panel is driven by Our apologies for showing the website are being marketed by NEC in Japan. mini piezoelectric or moving -coil address of Alban Electronics incorrectly They use the SoundVu technology exciters to generate sound. in the April and May Web Service developed by the Cambridge -based SoundVu is also being considered for pages. The correct address is company NXT. One advantage of this is use with flat -screen TV sets, mobile http://www.albanelectronics.co.uk an even distribution of audio phones and in cars. Several mobile frequencies across a room. The phone companies have licensed the technology involves placing a thin technology, and Philips is developing it Sony technology acrylic anti -glare glass panel in front of for use in automotive applications. A new blue -laser optical data -storage disc drive and cartridge -type disc, in both rewriteable and write -once versions, is to Dish planning regulations be launched by Sony this summer in Japan The government is considering a relaxation terrestrial TV while being banned from and the US. The new system will have a of planning regulations that restrict the installing a 65cm dish. Other rules limit the storage capacity of 23.3GB per disc with a installation of satellite dishes. A installation of 45cm Sky mini -dishes on listed maximum data transfer rate of 9Mbits/sec, consultation document issued by the Office buildings and within conservation areas. making it ideal for data -intensive of the Deputy Prime Minister presents five These could be removed or considerably professional applications such as document options for public comment. They range eased. The proposals also consider the use of and medical imaging, email archiving, from retaining the restrictions to abolishing larger dishes, up to 100cm, and more than enterprise content management, almost all of them. one dish at the same household. multimedia projects, graphics design and The 1995 regulations prevent many There has been lobbying by those who audio/video editing. The drive and discs households from being able to receive consider dishes to be an eyesore and others will feature a durable, airtight structure to satellite TV. The most contentious change who maintain that the current regulations are prevent dust ingress, increasing reliability would be to remove restrictions on dish unnecessarily restrictive and limit consumer for critical applications. The drive is installations in some National Parks. This has choice. The ODPM says it is looking at expected to cost the equivalent of about led to the anomaly of householders in some equality of access. Allowing dishes up to £2,000, with the discs about £30 each. No of the most remote and mountainous areas of 100cm to be installed enables satellites other UK launch details have been announced. A the UK having to build masts to receive than Hot Bird and Astra to be received. second -generation system, with 50GB disc capacity and a data transfer rate of 18Mbits/sec, is expected to be available by Sharp and Loewe join forces 2005. Sharp Corporation and Loewe Opta have digital TV, home cinema and multimedia Sony is developing, in conjunction with announced an agreement to co -develop and technology. Toshiba and IBM, a next -generation market LCD TV equipment. The two The companies plan to develop 25in. system -on -a -chip microprocessor called companies have been collaborating for and larger next -generation digital LCD TV that will massively increase the some time over technology exchange. The sets and supply LCD TV modules. The firstprocessing power available in domestic aims of the new agreement are to shorten step will be to launch new -generation electronic equipment. The investment will the development time for new products and models in Europe next year. This will be involve some $1.7bn over a three-year boost competitiveness by taking advantage followed by development of new high -end period. Sony expects the chip to be a key of each other's expertise - Sharp's LCD systems for European digital broadcasting component in the development of display and TV technology, and Loewe's standards. broadband networking.

TELEVISION June 2003 453 With the increased use of sophisticated surface -mounted chips, component removal problems are getting worse. Some of these ICs have a couple of hundred pins. You may find it necessary to replace one simply to confirm a diagnosis. It's a formidable task but, as Steve Beeching, I.Eng., MIEE has discovered, there's a solution - the ChipQuick kit

Photo 1: Steve Beeching's soldering station. The ChipQuick SMD removal kit A'though surface -mounted consists (left to right) of a JBC The manufacturer was very good components have been with quick -heat soldering pencil, a and offered to replace the us for several years now Metcal desoldering iron with a camcorder for the customer: after many service technicians still find it small high -temperature bit and all, it had cost only just over a difficult to remove and replace heated tweezers, a fume -extractor couple of hundred pounds. them. I refer to integrated circuits with carbon filter, a Pace Being simple in the head, I that have legs. The ball -gate array desoldering unit, and a very old decided to replace this processor IC (BGA) type, with the connections (mid -Eighties) Weller hot-air pencil to see if my diagnosis was correct, underneath, are a problem for all that supplies a very narrow hot-air and ordered a replacement. As but a few of us who have expensive,jet. A Leister HotJet hot-air tool is mentioned above, removal of the Photo 2: The specialist equipment that's not very on the pad at the front, with some ofchip was going to be difficult massive, suspect often used. its nozzles on top of the Pace unit. I because of its size. In particular 240 -leg IC on the Desoldering stations provide the carry out most of this type of work there was the problem of getting analogue solution in most cases. But, where under a microscope, to save what's enough heat to all four sides of the camcorder's the nozzles are of fixed size, there left of my eyesight. Even so I still IC to maintain the fluidity of the main PCB, with will always be the odd IC or passivehave problems with removing some solder on the legs without damaging Chemask used component that causes problems of the larger -size surface -mounted the high -density, multilayer circuit to protect because it doesn't conform to any ICs. BGA work is carried out using board by overheating. At this point adjacent passive standard tooling. a separate system that's not shown a friend suggested that I try a components. My own station, see Photo 1, in the picture. product he'd just come across - it had been drawn to his attention by a A difficult situation Japanese engineer. It's an SMD A difficult situation arose with an removal kit called ChipQuick. IC that's 3cm square and has 240 No harm in giving it a try, I legs, because of its size. It's used in thought. So I did, and got the a current analogue camcorder. The massive IC off - despite the fact chip's FM recording output was that it had securing compound stuck low - too low to drive fully the in each corner. This problem had to limiters in the record -drive section be overcome once the solder on the of the preamplifier IC. I had got legs had been reflowed. nowhere after much measuring Photo 2 shows the board with the activity, some changes and original IC and Chemask compound a discussion with the manufacturer. to protect adjacent passive The only remaining options were to components. Photo 3 shows the replace the IC or the main board. PCB once the IC had been removed

454 June 2003 TELEVISION and the print had been cleaned up. I first applied the flux to all the The glue pads at the four corners IC's legs, see Photo 4, as per the can be clearly seen. No other ChipQuick instructions, using the components were affected by the IC flux and syringe provided. The next removal, because they were step was to cover all the legs with protected by the Chemask the alloy and solder the legs at each compound and the heat was of the four sides of the chip together insufficient to damage the board. to form a solid mass at each side. Naturally, as you would expect This is shown in Photo 5. after such efforts, the new IC didn't I then heated the alloyed legs with cure the problem. So we'll not go a Leister HotJet hot-air tool, going down that road. At some time I will round the IC and gradually heating identify the FM -level gain set port up the alloy covering the legs. and check the fixed components When you do this you will notice here. Perhaps! that the alloy has a silvery molten texture, and that the legs on one side will remain molten while you heat up the others in turn. When the solder on all the legs was in a fluid Photo 4: ChipQuick flux applied to all legs of the IC to be state the IC was lifted off, using a removed. small suction device. I don't recommend 'flipping' the IC off, as this will chuck molten alloy all over the place (I tried it!). The instructions with the kit tell you to use the alcohol pads supplied to clean up the print. I found that standard desoldering wick works fine, and so did my Pace vacuum Photo 3: The PCB after removal of solder -removal tool. As Photo 6 the IC and a print clean up, using shows, whichever clean-up method the Chip Quick kit. you use leaves nice clean print pads ready for positioning the replacement IC. How does it help? If your diagnosis that a chip is So, if this ChipQuick kit helped me faulty is correct, and the remove such a massive IC, what can replacement is placed the right way it do for all you out there in the land round then soldered, the equipment of video/TV repairs who are still will work. If not, it's back to square struggling? one. At least you won't have The basis of the ChipQuick damaged the PCB, which is the Photo 5: The legs of the chip on all four sides soldered desoldering operation is an alloy most important point. If you look together, after application of the ChipQuick alloy. which melts at a very low very carefully at the bottom right- temperature so that, once heated, hand corner of Photo 6 however the mixed alloy/solder compound you will see a resistor that had on the IC's legs remains fluid for a moved. Oh well, back to the lot longer than usual. The kit microscope. consists of the alloy, a syringe of flux and some alcohol pads for Availability cleaning purposes. The alloy looks ChipQuick is available from CPC like a coil of solder but is quite (phone 01772 654 455), the order brittle when cold, so watch out for code number being SD00632. This this. provides sufficient material to remove three or four ICs, depending Use on their size. I decided to experiment with a couple of scrap, high -density digital Chemask compound camera PCBs to demonstrate the ChemaskHV is also available from technique. So here's how to do it. CPC. It comes in a 250m1 container, The process is shown in Photos 4, 5 order code number SD00529. As Photo 6: Whichever clean-up method is used, the print and 6. you can see from Photo 2 it's a pads are left nice and clean ready for the replacement IC. Start by examining the suspect IC pink, creamy liquid that sets to a to check for adjacent peripheral rubbery state and can thus be peeledor will cure in about thirty minutes components. Mask these off with off. It is fairly heat resistant but in free air. It then protects adjacent tape or Chemask. I didn't take the may crack and bubble when components from the exhaust hot- precaution on this occasion, as I subjected to heat. It will protect the air from the IC removal process and wanted to check whether the components it covers from solder stops them going walkabouts. relatively low temperature would reflow however. Don't allow Chemask to run under adversely affect the adjacent It's best to decant the liquid the legs of adjacent ICs. If you do components. It wouldn't matter if compound into syringes for you will not be able to remove it the components were affected as the application. Chemask can be cured once set - unless you take off the IC boards were scrap. under the heat from a bench lamp, as well.

TELEVISION June 2003 455 Latest technology from Sony Every year Sony hosts a major European event in Berlin, where new products are unveiled and advances in CE technology are introduced. George Cole reports on this year's presentation

At the 2003 Berlin press event Sony Once the content has arrived in the home "broadband divide", with households that unveiled its latest developments in it will be distributed around the various do not have a broadband link unable to use the field of consumer electronics. rooms and products via a wireless network a number of new products designed for use The technologies included flat -screen TV, system (wireless LAN), probably using the with a high-speed internet connection. DVD recording, home cinema systems, a IEEE 802.11 standard known as WiFi. Sony expects broadband to roll out across advance, Sony is promoting the idea of a home Europe quite rapidly over the next few upgrades and home networking. server, a unit that stores all available home years however. entertainment content for distribution Home AV/IT around the household. The Home Television Sony's strategy in the home networking Server will be launched this summer. Sony forecasts that over fifty per cent of field is to develop products and services Another new product, the Home Network the TV sets sold in Europe this year will be for what it describes as AV/IT Networking. Media Receiver, will enable content stored widescreen models, with large -screen sets The key to this is the use of a broadband on a home PC's hard disc to be distributed (screen size 28in. or more) accounting for internet connection to bring music, video to other products. over seventy per cent of the market. The and other information/content into the Sony's thinking in this field is similar to company's 2003 TV range includes home. Sony sees four product categories as that of Philips, outlined last month, though fourteen CRT -based sets with screen sizes being capable of acting as the broadband possibly with greater flexibility. It's an ranging from 14 to 36in., three LCD -based gateway: TV sets, mobile phones, PCs and enticing prospect but Sony appreciates that, sets with 15, 17 and 30in. screens and three the PlayStation 2 games console. in the short term at least, there could be a plasma -panel based sets giving 32, 42 and 50in. displays. There is also an LCD -based rear -projection model. Model KLV-30MR1 was noteworthy. This is a 30in. LCD Wega set that comes with a Media Receiver Unit (MRU): the two are connected via a proprietary cable link. The MRU includes four scart sockets (three for RGB), component video input, a PC input and a Memory Stick media slot. The latter can be used for viewing high - quality JPEG images that have been shot using a digital camera or camcorder or taken from a PC's hard drive. It is also possible to play back MPEG movies from these sources. Virtual Dolby Surround Sound is included. Model KF-42SX200 is a 42in. rear - projection set that uses three newly - developed LC panels, one for each primary colour, to produce a display with a total resolution of 3.15 million dots (1.05m per LC panel). The set incorporates DRC This 30in. LCD Wega set, Model KLV-30MR1, comes with a Media Receiver Unit (MRU): (Digital Reality Creation), which uses the two are connected via a proprietary cable link. digital processing to generate a high -

456 June 2003 TELEVISION The RDR-GX7 dual -format DVD recorder was on show. It can record on DVD-RW, DVD+RW and DVD-R discs. Sony says this makes it compatible with most current DVD-Video players. definition display from a standard - year and by the end of the definition TV signal. The proprietary year there should be almost digital algorithm used, and the scan 46 million DVD players in Table 1: Basic DVD format characteristics converter, convert from 625i (interlaced) use in Europe. The lines with 720 pixels each to 768p European market for DVD Format Track pitch Reflectivity (progressive -scan) lines with 1,366 pixels recorders is forecast to each. The digital -gamma circuitry reach one million this year. DVD-Video 0.74pm 45-85% produces a picture with 1,024 colour Model RDR-GX7 is DVD-RW, DVD+RW 0.74pm 18-30% levels. designed for recording TV DVD-RAM 0.615pm 15-25% When asked, the company said it has no broadcasts and has an plans at present to introduce TV sets with eight -event, one -month integrated hard drives. timer with VideoPlus and PDC. It uses the firmware upgrade for adding DVD+R programme information in the teletext data recording to the RDR-GX7. DVDrecording stream to name each recorded programme More than eighteen months ago Sony automatically. An on -screen menu displays DVD editing announced plans to develop a dual -format this name. Where teletext data is not Camcorder users often copy or edit their DVD recorder. The product, Model RDR- available, programme titles can be entered recordings on to tape. A DVD recorder GX7, was on show. It can record on DVD- manually. MPEG-2 recording is employed provides the option of using a DVD disc RW, DVD+RW and DVD-R discs. Sony and, to optimise picture quality, a variable - instead. The random access available with says this makes it compatible with most bit recording system is used. A pre -frame a disc makes it an appealing option. Model current DVD-Video players. Playback noise -reduction system cleans up the video RDR-GX7 offers several copying and takes in DVD-RW, DVD+RW, DVD-R, signal prior to encoding, and a timebase editing options. DVD+R, DVD-Video, Audio CD, CD -R corrector reduces jitter. Several recording The most basic, known as One -Touch and CD-RW discs. Although Sony, along options are available, see Table 2, with the recording, involves connecting a Digital with Philips and a number of PC trade-off being reduced picture quality MiniDV or Digital -8 camcorder to the companies, developed the DVD+RW with the longer recording times. RDR-GX7 via an iLink cable that carries format, the company says it will not As you would expect with a DVD audio, video and control signals between concentrate on a single format and intends recorder, the RDR-GX7 has lots of AV the two devices. The user simply presses a to develop products with optimum input and output sockets, including two single recording button, after which the compatibility. scart connectors (composite/RGB/S-video RDR-GX7 controls the camcorder's Sony says it decided on DVD+RW and compatible); DV input; S -video DVD-RW for optimum compatibility. in/out; composite video in/out; Table 1 compares basic DVD format component video out; phono audio Table 2: Recording modes,Model characteristics. It shows that the RW in/out; and coaxial and optical digital RDR-GX7 formats have a similar specification to a audio outputs. standard DVD-Video disc: the lower An interesting omission is that the Mode Recording time reflectivity provided by RW systems is in RDR-GX7 cannot record on to blank, fact the same as that of a dual -layer DVD- write -once DVD+R discs. Sony says HQ 60 minutes Video disc. DVD-RAM discs not only fall this is because the DVD+R standard HSP 90 minutes outside the basic DVD-Video was set too late for the company to SP 120 minutes specifications but in addition employ a be able to incorporate it. But Sony LP 180 minutes caddy and a different file format. has launched a DVD burner that's EP 240 minutes According to Sony sales of DVD players compatible with DVD+R, which SLP 360 minutes in Europe reached 14 million last year. The makes the omission puzzling. Sony figure is expected to rise to 18 million this confirmed that there would be no

TELEVISION June 2003 437 Model DAV-SA30 provides DVD-Video, CD and multi -channel SACD playback.

operations and begins copying the tape's the edit data to copy the selected scenes on generation DVP-PQ2 gives access to a contents on to a blank DVD disc. When to the blank disc. It sounds complex, but is special website where users can create a the recording is complete, the tape in the easy to do. Recordings can be stored on personalised inlay for their own Picot camcorder is automatically rewound. rewritable discs (DVD+RW or DVD-RW) player. The Auto Scene Chapter system can be or write -once discs (DVD-R). The original used when recording on to a DVD-RW DVD-RW disc can be reused and, as the Home cinema systems disc in the VR (Video Recording) mode. edit data is held in memory, users can Sony is launching a number of one -box The latter offers a number of recording and make as many copies as they like on blank DAV (Digital Audio Video) home cinema editing options such as adding index points discs. systems including the entry-level DAV- to video recordings, shuffling recordings Some companies have launched SA30 and top -of -the -range DAV-S888. In about and deleting scenes. The Auto Scene combined hard -disk drive and DVD addition there are three twin -component Chapter system puts index points at the writers, enabling the user to transfer the (HTP) DVD player/AV receiver systems, start of each 'chapter', making it easier to tape contents on to the hard disk, carry out Models HTP-1100, HTP-1500 and HTP- find a specific scene. The system uses the editing, and then copy the results on to a 3100. auxiliary data on a digital tape - this blank DVD disc. Sony maintains that Model DAV-SA30 provides DVD-Video, includes date and time information. picture quality is better with its system, CD and multi -channel SACD playback. It Whenever a new recording is made by a because the contents are copied from the can also read CD, CD-R/RW and MP3 digital camcorder the date and time original tape. data, and can playback JPEG slide shows information is altered: the RDR-GX7 looks on a TV screen. An S -master digital for these changes and inserts a chapter DVD-Video amplifier, RDS radio tuner and Dolby index point at each one. The Program Edit Sony isto launcha number of new DVD- Digital, DTS and Dolby Pro -Logic H system makes it possible to select edit -in Video players this year, including Models decoding options are included. It has five DVP-NS999ES and DVP-NS930V which satellite speakers and an 8cm subwoofer. also provide Super Audio CD (SACD) Model DAV-S888 has a 90W active playback. Model DVP-NS330 can read subwoofer speaker, four surround speakers DVD-Video, Video CD, Super Video CD and provides DVD-Video, multi -channel (not compatible with Playback Control), SACD, Video -CD, DVD-R/RW and Audio CD and Data CDs with MP3 data. DVD+R/RW playback. It has an RDS It's compatible with various tuner with 30 preset channel options. writeable/rewriteable media discs such as The HTP series is designed for home DVD-RW (Video and VR modes), cinema customers who prefer separate DVD+RW, DVD-R, DVD+R, CD -R and units. There's a DVD player, an AV CD-RW. receiver and a 5.1 multi -channel speaker The Picot is a portable DVD player aimed Sony says its new DVD players are system. Model HTP-1100 can read a at younger users: the second -generation environmentally friendly, with a power variety of audio and video disc formats. DVP-PQ2 gives access to a special website consumption in standby of less than 0.3W. Model HTP-1500 includes Dolby Digital, where users can create a personalised inlay An auto power -off function operates when Dolby Pro -Logic II and DTS decoding plus for their own Picot player. the player has not been used for more than Sony's Digital Cinema Sound EX system. half and hour. Picture quality has been Its DVD player can handle DVD-Video, and edit -out points and store these in the improved by using a 10-bit/27MHz video Video -CD, DVD-R/RW, DVD+R/RW, RDR-GX7's memory. Once a scene has DAC alongside the company's block noise CD, CD-R/RW and multi -channel SACD been selected, it's automatically copied on reduction and digital video enhancer. discs and MP3 sound. Model HTP-3100's to the DVD disc, with the recorder Performance is also improved by the receiver includes Dolby Digital, Dolby controlling the camcorder's operations. Precision Drive 2, twin -laser pickup and Pro -Logic H and DTS decoders. The Advanced Program Edit System dynamic tilt correction. The Quick Setup, One of the problems with a multi -channel involves downloading the contents of a Magic Pad and Picture Navigation features home cinema system is the cabling camcorder tape on to a DVD-RW disc in are designed to make the players easy to required to connect six or more speakers to the VR recording mode and then editing install and use via the TV screen. the amplifier/decoder. To reduce this the scenes on disc, for example rearranging Model DVP-NS430 has an additional problem the DAV-DS1000 system uses a the order of scenes or deleting scenes. optical output, while Model DVP-LS500 new infra -red digital audio transmission Once editing has been completed the edit has S -video and component video system, developed by Sony, for the rear data is stored in memory and a new, blank compatibility. The Picot is a portable DVD surround speakers - these are simply disc is inserted. The RDR-GX7 then uses player aimed at younger users: the second - plugged into the mains supply. There are

458 June 2003 TELEVISION two IR operating modes. The front left and half this. The advantage is that almost all SONY MEMORY STICK PRO right speakers incorporate IR transmitters DVD players can play the discs. whose outputs are picked up by 1R _An"- receivers in the rear left and right speakers. SACD Where there's direct line -of -sight, the data Sony and Philips jointly developed the 1GB is picked up directly. The 1R receivers can Super Audio CD as the next -generation M LG I C GAT E also detect reflected signals however. CD. Since the format was launched four These may have been reflected from a years ago more than two million players wall, the ceiling or an object within the have been sold worldwide, and over a room. Powerful error -correction is used to hundred titles are available. Sony's SONY MEMORY STICK PRO provide optimum results under various strategy has been to include SACD conditions, even where there's no clear operation in as many types of product as line -of -sight between the front and the rear possible, including standalone players, 1512mB speakers. The new IR audio transmission DVD players and home cinema systems. MAG I C GATE system uses QPSK digital modulation. It Sony's latest SACD products include the can therefore be used alongside other IR DVD-Video/SACD players and DAV devices, such as remote -control handsets, home cinema systems previously with no risk of interference problems. mentioned. Multi -channel SACD is now a SONY MEMORY STICK PRO standard feature with all Sony home Camcorders cinema systems. Sony camcorders use a number of formats Another aspect of Sony's strategy is 4256ms including Hi -8, Digital -8, MiniDV, investment in SACD replication facilities MAGICGATE MicroDV and now DVD. Two DVD at its European headquarters at Anif, (Th camcorders, Models DCR-DVD100 and Salzburg in order to boost disc production. DCR-DVD200, have been announced. A new production line currently being Memory Stick PRO units are now available Both use DVD-RW/R discs and include a installed will be dedicated to the with storage capacities of 256MB, 512MB USB 2.0 port for high-speed transfer of production of hybrid discs that have a dual and 1GB. audio and video data to a PC for copying audio layer, enabling them to be played by or editing. As Sony co -developed the audio CD and SACD players. Initial DVD+RW format, I was intrigued to know monthly capacity will be 500,000 discs. thirty CD albums (assuming a 60 -minute why the company had not opted to use this Sony DACD, the company's disc album) to be recorded on one 700MB CD- with its camcorders. The surprising answer replication business, expects the demand R/RW disc, using the lowest bit rate. Sony was that it considered DVD-RW to have for SACD discs in Western Europe to rise says that even at such very high greater compatibility than DVD+RW and to more than 100 million a year by 2006. compression rates the sound quality is better editing features, which makes one excellent. wonder why Sony bothered to develop TheATRAC Walkman DVD+RW! The ATRAC CD Walkman was a very Memory Sticks Another interesting development is a interesting announcement. ATRAC Some Memory Stick format developments one -click Video -CD recording facility with (Adaptive TRansform Acoustic Coding) is were announced. Memory Stick media Sony's Digital -8 camcorder. The the audio -compression system used by with Memory Select Function incorporates camcorder is connected to a PC with a CD MiniDisc and Memory Stick audio 128MB units that can be selected by using burner: then, with one press of a button, products. Sony is now to use ATRAC-3 a mechanical switch. This means that you camcorder footage is transferred to a CD. technology for storing music on a CD. In could, for example, store business data in The downside of using Video -CD is a fact the ATRAC CD Walkman will use an one 128MB unit and personal data in reduction in picture quality. The horizontal enhanced form known as ATRAC-3 plus. another. As Memory Stick products with resolution with Digital -8 is about 500 This incorporates further advanced audio - the Memory Select Function have a basic lines, but the figure with Video -CD is only compression technology that enables up to storage capacity 128MB, they can be used with most current and future envisaged Memory Stick compatible products. The first Memory Stick media with Memory Select Function will have two 128MB units. A 512MB version with four 128MB units is under development. Sony and Sandisk have developed the 1GB Memory Stick PRO medium that can store up to six hours of MPEG-4 moving images (at 384kbits/sec) or 24 minutes of DVD-quality MPEG-2 video. This is equivalent to about sixteen audio CDs, 360 JPEG images with 5 Megapixel quality, or more than ten rolls of 35mm film. Memory Stick PRO has a maximum data transfer speed of 160Mbits/sec and a new minimum write speed of 15Mbits/sec. With so much data carried on a compact and highly portable memory card security could be a problem. So Sony is developing an access -control function, which uses an embedded intelligent controller unit. To access the Memory Stick's contents, you Camcorder Model DCR-DVD200 uses DVD-RW/R discs and includes a USB 2.0 port for would need to enter a code number on a high-speed transfer of audio and video data to a PC for copying or editing. special card reader.

TELEVISION June 2003 459 The Panasonic Euro-4H chassis The 4H version of the Euro-4 chassis incorporates 100Hz scanning. An added PCB takes over from the previous video processor/RGB processor/timebase generator chip to provide various extra features. Brian Storm describes the change and what it involves

The Panasonic Euro-4 chassis, and TX32PK25. Subsequently chassis, in the Euro-4H chassis which was described in the Models TX28PLIO, TX32PL10, there's an upright PCB designated July and August 2001 issues TX28PL20 and TX32PL20 were board F, with three ICs mounted on of Television, has been with us released. These Euro-4H sets also it. This PCB is referred to as the since 1997, when it first appeared have an improved service menu, features board, hence F. Fig. 1 in 21-25in. models with black with additional geometry shows a simplified block diagram. cabinets. Since then the chassis has adjustments, to satisfy the demands The first IC on the board, IC1502 been used to drive ever -larger 16:9 of ever more discerning viewers. (ClAB00001345), is a digital video aspect -ratio sets in a variety of Unlike its more sophisticated processor and input selector. It silver and blue cabinets. The stable -mate the Euro-7 chassis, see carries out the following functions: versatility of the Euro-4 chassis lies Television October 2002, the Euro- video switching for the line inputs in the variety of digital 4H chassis uses a fixed -field and UHF tuner/IF video feed; high - video/timebase processor chips that sequence, AA -BB, for 100Hz quality comb filtering for excellent can be used: VDP3108 for 4:3 sets, processing. With the more video/chroma separation; VDP3112 for standard widescreen upmarket Panasonic 100Hz models PAL/NTSC colour decoding; sets and VDP3120 for top -of -the - the processing is more elaborate analogue -to -digital conversion of range sets that provide the highest - with the ability, in order to the RGB line inputs from scart quality pictures. optimise picture performance, to connector AV1; generation of a On the Continent, especially in switch field sequences depending line -locked clock and a double - Germany, Panasonic has supplied on the source of the video material. frequency line -locked clock; 100Hz versions of the chassis for generation of an analogue video line some time. Since the autumn of The F panel output for pin 19 of the scart 2001 this version, the Euro-4H, has Instead of the 64 -pin digital video sockets. Fig. 1: Simplified also been available in the UK. The processor/RGB processor/timebase The analogue video inputs are fed block diagram of initial models were the TX28PK25 generator chip used in the Euro-4 to pins 71-75 of IC1502. The the arrangements 27MHz (LLC2) on panel F in the 13.5MHz (LLC1) Euro-4H chassis. Field sync Text and OSD inputs from IC1001 Line sync

Analogue outputs Analogue Digital luminance 100Hz luminance R video G inputs IC1502 IC1503 IC1504 B Video processor Up -conversion Video and deflection and to 100MHz inc. processor input selector frame memory G B Digital multiplexed .8 100Hz UN Beam -current FB UN feedback

-I H X1501 X1502

Comp Line,ield, EW video and scan velocity -modulation to scan I2C bus drives sockets

460 June 2003 TELEVISION composite video output is available 37-40. These signals are provides dynamic peaking, contrast at pin 70. RGB inputs are fed to synchronised by the field sync and brightness control and gamma pins 1, 2 and 3, with the fast - input at pin 22 and the line sync correction. blanking pulses fed to pin 80. A input at pin 23. The 13.5MHz line - The RGB processing section field sync output is available at pin locked system clock (LLC1) is fed inserts text and on -screen graphics 57, a line sync output at pin 54, the in at pin 29, providing a write clock generated by the microcontroller 13.5MHz line -locked clock (LLC1) for the up -conversion memory. The chip IC1001. These inputs are at at pin 28 and the double -rate 27MHz clock (LLC2) input is at pin pins 31, 32 and 33 of IC1504. (27MHz) line -locked clock (LLC2) 54, for the double -rate data read Pin 7 measures the ultra -black at pin 27. out. current of the CRT's beams during The outputs from this IC consist The up -converted digital the field flyback period. Two of an 8 -bit digital luminance signal luminance signal output is at pins 1, resistors, R1538 and R1539, at pins and multiplexed, time-shared 8 -bit 3-7, 63 and 64, while UN data 15 and 16, are switched into circuit digital U and V colour -difference output is present at pins 10-17. at this time to limit the current signals. These digital video signals These outputs are fed to IC1504 during measurements of peak R, G are fed to IC1503 (SDA9400) for (DDP3310BPSD3), which is a and B. IC1001 compares these up -conversion to 100Hz. single -chip digital video and measurements, via the 12C bus, with IC1503 carries out the following deflection processor. data held in the EEPROM chip, and functions: large -area flicker IC1504 carries out the following carries out updating as necessary to reduction; line -flicker reduction; functions: horizontal scaling; prevent grey -scale drift. vertical zooming; vertical dynamic peaking; gamma The analogue RGB outputs appear shift/panning; colour -transient correction; colour -transient at pins 24, 25 and 26 of IC1504 and improvement; luminance -signal improver; RGB processing; CRT are fed to transistor buffers before peaking; motion -adaptive temporal black -level calibration; and leaving the board along with the and spatial noise reduction; still generation of double -rate line, various timebase and scan -velocity picture provision; 100/120Hz double -rate field; EW and scan drive signals. interlaced scanning. velocity -modulation drives. The SDA9400 chip has its own The horizontal scaler, which is Rest of the chassis internal frame memory for 100Hz synchronised by the 27MHz clock, The rest of the Euro-4H chassis is up -conversion purposes. The 8 -bit is responsible for the display of the very similar to the normal Euro-4, digital luminance input is fed to active picture in various formats, apart from the addition of IC601 pins 43-50 while the 8 -bit digital such as 'Just' mode and 4:3. The (TEA2114) on panel E for AV2

U/V input is fed to pins 31-34 and luminance section of the chip out source switching.

4, 411,

tiote/1404A0t." world 44+1:1;b ; TV AND VIDEO LTD liz9,,Zifit4!%a, "frii4 ca111 e,. 00Oftle.h.e.)4' We now sell PART EXCHANGE returnstock VCR'S from £20 4ect, eive l'i et), 21" TV's from £25 *14.42*,:#1, r od'o 25" TV's from £35 1,, / 28" TV's from £50 fvo, 28" widescreen TV's from £70 32" Widescreen TV's from £130 LARGE QUANTITIES AVAILABLE FOR EXPORT

Widescreen TV's Latest SILVER CABINET Graded Stock 28" Widescreen £100 28" True Flat Widescreen £125 32" Widescreen £175 32" True Flat Widescreen £225 THIS IS JUST A SMALL SELECTION OF OUR HUGE STOCK Prices based on a minimum of 5 units All prices are Exclusive of VAT BIRMINGHAM Mixed Grade Stock - 208 Bromford Lane, Erdington, Birmingham Export Enquiries Welcome! B24 8DL Tel: 0121 327 3273 Fax: 0121 322 2011 LONDON 221 Kenton Road, Middlesex HA3 OHD Tel: 020 8907 9387 PRESTON Unit 434 Ranglet Road, Walton Summit, fc DVD Hi-fi's Preston PR5 8AR Tel: 01772 316066

TELEVISION June 2003 461 The help wanted column is intended to assist readers who require a part, circuit etc. that's not generally available. Requests are published at the discretion of the editor. Send them to the editorial department or email to [email protected] - do not write to or phone the advertisement department about this feature. ELPWANTED Wanted: Set of video heads for the Wanted: 2SA1460 and 2SC3733 transis- half inch in diameter and six inches or more National Panasonic time-lapse VCR Model tors. These are used in the Thomson plas- long. Willing to pay good money for them. AG6010B. Please phone/fax P. Herring, ma -screen TV Model 42WS90E2 (though Phone Peter Tankard on 07931 463 823 Eastern TV Services (Lowestoft, Suffolk) the modules are made by NEC). Please (mobile). on 01502 565 427. email For sale: 200+ blank tapes. Please Wanted: Our workshop has a couple of [email protected] call Nigel Cannon on 0476 572 095. Philips ES95011 2 -in -1 25/50W soldering Wanted: Drum and head -wheel assembly Wanted: Remote -control unit for a Strong irons, but unfortunately replacement tips are for the Grundig VCR Model GV250, part 4375. Please contact Colin on 01782 314 no longer supplied by Philips. Has anyone no. 75986-21030 (equivalent to Panasonic 666 or email found a suitable alternative tip for this iron, part no. VEG0966 5053106A). Please [email protected] or has anyone some tips they no longer phone Michael Simons on 020 8422 2209 if Wanted: User manual and IC type IC- require? Reasonable price paid. Sean you can help or provide any information on UPD75P218C-139E for the JVC time-lapse Mewse, 275 Monks Road, Lincoln. Phone a likely source. VCR Model BR-S925E. Please contact 01522 540 521 or email For disposal: Sony reel-to-reel video Peter on 023 9235 3595 after 6 p.m. or [email protected] recorder Model CV2100ACE in working email For disposal: Several widescreen CRTs order. For details phone R. Flitcroft on 0161 [email protected] removed from brand-new but board -dam- 684 1214. For sale: Sixties Bush -Murphy colour TV aged sets. No Philips types. Free if you can Wanted: Circuit diagram for the ITT Model set in teak cabinet with roll -slide door. collect, as I need the space. Phone Michael ST28TX with the Compact D2 S4 SQ chas- Excellent condition, still working. Sensible Dranfield (Buxton, Derbyshire) on 01298 73 sis. I've been able to find diagrams for offers, please email Jean King at 989 during normal shop hours. CT28 models, but not one for the correct [email protected] Wanted: For spares, Quad 33 or 44 pream- chassis. If anyone can help, please phone Wanted: LCD remote -control unit for the plifiers, 303 or 405 power amplifiers and Paul Attwood on 07801 064 713 or email Amstrad Model VCR6000. Phone 01872 FM2 or FM3 tuners. Phone Mike on 01758 paulattwoodl @ activemail .co.uk 271 407 or email 613 790. Wanted: Old half -inch ferrite rods. Must be [email protected]

Complete and fax the coupon to: +44 (0) 1353654400

I wish to subscribe for one year to Television: Price UK E33.80 E Europe E48.00 H1CHBUR1 TELEVISION 7Rest of World E63.50Eus$99.00EEuro 100.96 Business Communications ANDHOME ELECTRONICS REPAIR I wish to subscribe for two years to Television: Price r] UK E53.00 El Europe 07.00 Television & Home Electronics Repair magazine MI Rest of World E99.00 E US$154.00 Euro 157.41 is the only magazine for technicians who deal

Please tick preferred method of payment with consumer electronic products, in particular III enclose a cheque payable to Highbury Business Communications Ltd TV, Video, Satellite and Audio equipment. E Please invoice me 11]Purchase No (NB Purchase order must be included to validate invoice( Please charge my: Master Card/Visa/Amex/Diners Keep up to date with the latest information and Club/Switch/Delta (please circle) changes affecting this industry including tips & Card No guides on repairing television and electronic Expiry Date (Switch/Delta Only) Valid from r] E / Ell Issue Number equipment including Signature satellite receivers,

Date PCs, monitors,

Name VCRs, DVD players, Job Title audio equipment

Company and much more

Address

Postcode/Zip Country hialte sureyou Telephone/Fax your regular rnonthiy E-mail Please tick here if you do not wish to be contacted by other businesses either by copy by subscribing MailETelephone 1.] Fax 1111 Email E Please return to: Highbury Subscription Services, Link House, tOdaY1111111111111110. 8 Bartholomew's Walk, Ely, Cambridgeshire CB7 42D, UK. Email: [email protected] (Quote ref: TV1)

462 June 2003 TELEVISION Grandata Ltd distributor of electronic components Aerial Installation Accessories 10 Element 19 Element 48 Element Digital Compatible Aerial Digital Compatible Aerial Digital Compatible Aerial New New Arrival Arrival

Receives digital and analogue signals (Channels 21 to Receives digital and analogue signals (Channels 21 to High Gain - Receives digital and analogue signals 68) in strong to medium signal strength areas ,also 68) in medium signal strength areas , also Channel 5 (Channels 21 to 68) in weak signal strength areas , also Channel 5 compatible. compatible. Channel 5 compatible. Horizontal or Vertical mounting. Horizontal or Vertical mounting. Horizontal or Vertical mounting. Order Code : 27882R Order Code : 27883R Order Code : 27884R Price : £ 8.00 + vat Price : £ 15.00 + vat Price : £ 20.00 + vat Carriage charged at £ 5 00 + vat Carriage charged at £ 5.00 + vat Carriage charged at £ 5 00 + vat SLx Aerial Amplifiers SLx Masthead Amplifiers UHF TV antenna pre amplifier designed Now with built in Digital ByPass Operates with Sky'm DigiEye for the professional aerial installer 15dB gain masthead amplifier ideal for Class leading noise figure of 4dB or less majority of domestic installations 26dB gain masthead amplifier for longer 6dB signal amplification on all models cable runs (loss of more than 3dB) or if connected to passive splitters Description Order Code Price Requires 12V DC power supply via downlead either via dedicated power supply unit or from a distribution ampli- - No Bypass SLX2 £ 8.00 + vat 2 Way fier with line powering 2 Way - WithBypass SLX2B £ 9.25 + vat 15dB Amp Order Code : 27830R 4 Way- No Bypass SLX4 £ 13.00 + vat Price : £ 4.30 + vat 4 Way - WithBypass SLX4B £ 14.00 + vat 26dB Amp Order Code : 27831R 6 Way- No Bypass SLX6 £ 18.00 + vat Price : £ 4.50 + vat 6 Way - WithBypass SLX6B £ 19.00 + vat SLx Masthead Amp PSU Order Code : 27832R 8 Way- No Bypass SLX8 £ 18.50 + vat Price : £ 5.00 + vat 8 Way - WithBypass SLX8B £ 20.00 + vat Postage for 2+ £ 5.00 + vat Coax Plug Screw Type Twist On F Coax Coupler Coax Coupler Y Splitter Aluminium Coax Plugs Connectors Socket to Socket Plug to Plug Inductive 3 way 4'4'

Order Code : PLG51 Oder Code : PLG62 Order Code : PLG101 Order Code Order Code Order Code Bag of 10 Bag of 10 Bag of 10 PLG54 PLG55 YSPLITTER Price : £ 125 + vat Price : £ 1.60 + vat Price : £ 1.00 + vat Price : 40p + vat Bag of 100 Bag of 100 Bag of 100 Bag of 10 Bag of 10 Bag of 10 Price : £ 9.00 + vat Price : £ 12.50 + vatPrice : £ 6.00 + vat Price : £1.50 + vat Price : £1.50 + vat Price : £ 3.00 + vat Single Surface Single Surface Double Surface Dust Bubble Coax Outlet F Socket Outlet Coax Outlet #1° . Order Code : 19122R Order Code : 19127R Order Code : 19123R Price : £ 0.45 + vat Price : £ 0.70 + vat Price : £ 0.60 + vat Double Surface Single Flush Single Surface Collect dust when drilling and Coax Outlet F Socket Outlet Coax Outlet the throw away. Quick and easy to use. 0 Pack of 12 Order Code : 19120R Order Code : 19126R Order Code : 19121R Order Code: DUSTBUBBLE Price : £ 0.60 + vat Price : £ 0.75 + vat Price : £ 0.85 + vat Price : £ 2.00 + vat

K.P. House , Unit 15 , Pop In Commercial Centre , Southway , Wembley , Middlesex . HA9 OHB Tel: (020) 8900 2329 Fax : (020) 8903 6126 Email : [email protected] Grandata Ltd distributor of electronic components Digital Satelitte Accessories SkyTmDigitalemote sky-mgmal sky-Emma' Remote a TV Link Eye Combination Remote Controls SLx Link Eye Combination

Order Code : SKYPACKI Order Code : RCSKY Order Code : SKYPACK2 1+ 5+ Price : £ 16.00 + vat each £ 7.95 + vat £ 7.45 + vat Price : £ 13.00 + vat each each each 5+ 10 + 5+ £ 14.50 + vat each £ 6.95 + vat each £ 11.50 + vat each SLx Link Eye SkyTM Digital TV Link Eye SLx Amp By Pass Kit Allows control of SkyTM Digibox via the signal feed for For use with aerial amplifiers and SkyTM Digibox second TV Order Code : TVLINKEYE Price Order Code : 27833R Allows for operation of Link Eye in 1 -9 £ 10.75 + vat conjunction with a distribution £ 6.50 + vat each amplifier 5 + £ 7.99 + vat each 10 - 24 10+ Order Code : 27829R £ 5.50 + vat each £ 6.99 + vat each Price : £ 5.00 + vat Satellite Repair / Mod Kits Amstrad DRX100Amstrad DRX100Amstrad DRX100 Grundig GDS200 Grundig GDS200/300 Tuner Repair Kit Power Supply Power Supply Digital Satellite Receiver Digital Satellite Receiver Reliabilty Kit Repair Kit Repair Kit Repair Kit Order Code Order Code Early psu LATER psu TYPE REV 03 Order Code MODEL : DSO - 0385 REV C DSO - 0375 REV A SATKIT35 SATKIT36 SATKIT37 DSO - 0385 REV 5 Price Price Price Order Code: SATKIT34AOrder Code: SATKIT34B £ 1.40 + vat £ 12.00 + vat £ 13.50 + vat Price : £ 10.00 + vat Price : £ 10.00 + vat Digital Satellite Receivers Fan Kit g Panasonic Digital Satellie Receiver Fan Kit Suitable for Suitable for Panasonic TU-DSB20/30, TU-DSB31/35 Amstrad DRX100, DRX200 Grundig GDR200, GDS200 Pace Digibox plus many more analogue makes and models Order Code : FANKITI Order Code : FANKIT2 Price : £ 10.00 + vat Price : £ 15.00 + vat Grundig Digital Satelitte ReceiversReliability Kit New These kits contain capactiors that are generally of higher specification than those fiited by the manufacturers. Arrivals !! GDS200 GDS200 / GDS300 GDS200 / GDS300 Early PSU Later PSU Later PSU DS00385 Rev C DS00375 Rev A Rev 03 Kit Contains 9 capactitors DS00385 Rev F Kit Contains 13 capactitors Kit Contains 11 capactitors Code :RELKIT34A Code :RELKIT346 Code :RELKIT34C Price: £ 4.00 + vat Price: £ 4.00 + vat Price: £ 4.00 + vat GDS200 / GDS300 GDS300 Samsung PSU Samsung PSU PSSH370601B PSSH370603B Kit Contains 12 capactitors Kit Contains 13 capactitors

Code :RELKIT34D Price: £ 4.00 + vat Code :RELKIT34E Price: £ 4.00 + vat Grandata Ltd distributor of electronic components Television Repair / Mod Kits

MAKE KIT TYPE CODE MAKE KIT TYPE CODE MAKE KIT TYPE CODE MAKE KIT TYPE CODE & MODEL MODEL 8. MODEL 8. MODEL ALBA GOODMANS-continued MITSUBISHI..Continued PHILIPS..Continued 1452T PSU ONWAKIT 2029T PSU ONWAKIT CT21AV1BS PSU MITSKIT3 310.32262 PHILKIT8 1427T PSU ONWAKIT 2029TA PSU ONWAKIT CT25A2STX TDA 8178S MITSKIT1 310.62264 PHILKIT1 1402 PSU ONWAKIT F16 CHASSIS FRAME GOODKIT1 CT25A3STX TDA 8178S MITSKIT1 ANUBIS A SOPS PHILKIT2 1455T PSU ONWAKIT F16 CHASSIS LINE GOODKIT1 CT25A4STX TDA 8178S MITSKIT1 CP110 CHASSIS SOPS PHILKIT8 1456T PSU ONWAKIT F16 PSU GOODKIT1 CT25A6STX TDA 8178S MITSKIT1 G90A CHASSIS SOPS PHILKIT10 1458T PSU ONWAKIT F16 VIDEO GOODKIT1 CT25AV1B PSU MITSKIT3 090B CHASSIS SOPS PHILKIT10 1459T PSU ONWAKIT CT25AV1BS PSU MITSKIT3 G110 CHASSIS SOPS PHILKIT3 1499Y STANDBY MODKIT37 GRUNDIG CT25AV1BD PSU MITSKIT3 GR2.1 CHASSIS SOPS PHILKIT1 PHILKIT1 2002 PSU ONWAKIT CUC 7350 GRUNDIGKIT1 CT25AV1BDS PSU MITSKIT3 GR2.2 CHASSIS SOPS 2009B PSU ONWAKIT CUC 7301/3 CT28AV1B PSU MITSKIT3 D-16 CHASSIS SOPS PHILKIT6 PHILKIT5 2052T PSU ONWAKIT (BUZ90) PSU GRUNDIGKIT2 CT28AX1BD PSU MITSKIT3 HSM VIDEO SOPS 21521 PSU ONWAKIT CUC 7301/3 CT28AV1BDS PSU MITSKIT3 JSM VIDEO SOPS PHILKIT4 PHILKIT9 2099TX STANDBY MODKIT37 (MJF18004) PSU GRUNDIGKIT3 CT29AS1 TDA 8178S MITSKIT2 KSM VIDEO SOPS BTV17 STANDBY MODKIT37 CT29A4 TDA 8178S MITSKIT2 LSM VIDEO SOPS PHILKIT7 CTV501 PSU ONWAKIT HINARI CT29A6 TDA 8178S MITSKIT2 CTV701 PSU ONWAKIT CT29B2 TDA 8178S MITSKIT2 SAMSUNG HIT14RC PSU ONWAKIT MAKE KIT TYPE CODE PSU ONWAKIT CI5944 FRAME SAMKIT2 CTV840 8. MODEL CTV841 PSU ONWAKIT CI6844 FRAME SAMKIT2 CTV485 PSU ONWAKIT JVC VIK310 PSU SAMSUNGKIT CT29B3 TDA 8178S MITSKIT2 AV29SX1EK FIELD 0/P JVCKIT1 VIK320 PSU SAMSUNGKIT TDA 8178S MITSKIT2 AV29SX1EN FIELD 0/P JVCKIT1 CT29B6 VIK350 PSU SAMSUNGKIT AKAI TDA 8178S MITSKIT2 AV29SX1EN1 FIELD 0/P JVCKIT1 CT33B3 VI375 PSU SAMSUNGKIT CT1417 PSU ONWAKIT M5 SERIES PSU MITSKIT3 AV29SX1PF FIELD 0/P JVCKIT1 VI395 PSU SAMSUNGKIT CT2159U PSU ONWAKIT AV29TS 1E1 FIELD 0/P JVCKIT1 WINNER 1 PSU SAMSUNGKIT CT2162UNT PSU ONWAKIT C14E1EK PSU ONWAKIT NEI/NIKKAI CT2863UNT PSU ONWAKIT C14T1EK PSU ONWAKIT CE25 CHASSIS PSU NIKKAIKIT1 SHARP C21ET1EK PSU ONWAKIT C289FTXN PSU NIKKAIKIT1 51CSO3H PSU SHARPKIT1 DECCA/TATUNG CS21M3EK PSU ONWAKIT C28F41FXN PSU NIKKAIKIT1 51CSO5H PSU SHARPKIT1 TVC563 STANDBY MODKIT37 59CS03H PSU SHARPKIT2 MATSUI PANASONIC 59CS05H PSU SHARPKIT2 59CSD8H PSU SHARPKIT2 GOLDSTAR 1455 PSU ONWAKIT IC561 TDA 8175 PANKIT1 59DS03H PSU SHARPKIT3 CF25A5OF FRAME MODKIT36 1498 PSU ONWAKIT TX25XD60 VERT OUTPUT PANKIT2 66CS03H PSU SHARPKIT2 CF25C22C FRAME MODKIT35 2086 PSU ONWAKIT TC28XD60 VERT OUTPUT PANKIT2 66CS05H PSU SHARPKIT2 CF28A5OF FRAME MODKIT36 2098 PSU ONWAKIT TX28XD70 VERT OUTPUT PANKIT2 66CSD8H PSU SHARPKIT2 CF28C22F FRAME MODKIT35 21V1N (BUZ90) PSU GRUNDIGKIT2 TX29XD70 VERT OUTPUT PANKIT2 CF28C28F FRAME MODKIT36 21V1T(MJF18004) PSU GRUNDIGKIT3 TX-W26D3 VERT OUTPUT PANKIT2 THOMSON CF29C42F FRAME MODKIT35 TVR180R/T/2080 STANDBY MODKIT37 35029400 THOMKIT2 PHILIPS 35065920 THORNKIT1 GOODMANS MITSUBISHI 310.10708 PHILKIT3 FV70 PSU THORNKIT1 14711 PSU ONWAKIT AV1 SERIES PSU MITSKIT3 310.20491 PHILKIT2 ICC7 CHASSIS TDA 8178FS THOMKIT1 149T PSU ONWAKIT CT1M5B PSU MITSKIT3 310.20496 PHILKIT10 ICC7 CHASSIS FRAME THOMKIT3 1430RA PSU ONWAKIT CT21M5BT PSU MITSKIT3 310.31994 PHILKIT6 ICC8 CHASSIS TDA 8178FS THOMKIT1 1430RS PSU ONWAKIT CT25M5BT PSU MITSKIT3 310.32252 PHILKIT5 ICC8 CHASSIS FRAME THOMKIT3 1430RW PSU ONWAKIT CT21A2STX TDA 8178S MITSKIT1 310.32253 PHILKIT4 ICC9 CHASSIS EAST/WEST THOMKIT4 1450T PSU ONWAKIT CT21AX1B PSU MITSKIT3 310.32254 PHILKIT9 R3000 PSU THOMKIT2 14551S PSU ONWAKIT CT21A3STX TDA 81785 MITSKIT1 310.32255 PHILKIT7 R4000 PSU THOMKIT2 2019R PSU ONWAKIT TX92F CHASSIS..EAST/WEST THOMKIT4

ORDER CODE PRICE ORDER CODE PRICE 'rr ORDER CODE PRICE ORDER CODE PRICE"ORDER CODE PRICE

PANKIT2 £ 9.00 PHILKIT6 £ 5.50 SHARPKIT2 £ 11.00 GRUNDIGKIT1 £ 10.50 MITSKIT3 £ 6.00 £ 7.60 PHILKIT7 £ 7.60 SHARPKIT3 £ 9.00 GRUNDIGKIT2 £ 10.50 MODKIT35 £ 9.50 PHILKIT1 PHILKIT10 £ 8.50 PHILKIT8 £ 4.25 THOMKIT1 £ 7.00 GRUNDIGKIT3 £ 10.50 MODKIT36 £ 5.00 £ 2.50 PHILKIT9 £ 7.50 THOMKIT2 £ 12.00 GOODKIT1 £ 11.00 MODKIT37 £ 6.50 PHILKIT2 £ 4.00 SAMKIT2 £ 8.00 THOMKIT3 £ 9.00 JVCKIT1 £ 11.00 NIKKAIKIT1 £ 12.00 PHILKIT3 £ 16.00 THOMKIT4 £ 4.00 MITSKIT1 £ 3.00 ONWAKIT £ 12.00 PHILKIT4 £ 4.25 SAMSUNGKIT £ 5.75 SHARPKIT1 £ 11.00 THORNKIT1 £ 12.75 MITSKIT2 £ 15.00 PANKIT1 £ 15.00 PHILKIT5

Repair Kits-New Arrivals!! Matsui Matsui Sharp Sony V R homson 1496R/T 1496R/T 56FW53H,66FW53H, SLV715HB ICC17 and 2096R/T and 2096R/T 66FW54H,76FW53H, SLV777UB Power Supply Repair Kit for Repair Kit for 76FW54H Repair Kit for Repair Kit Power Supply Power Supply PSU & Dolby Power Supply using a BUZ90 using a H3N90 Upgrade

Order Code Order Code Order Code Order Code Order Code MODKIT43 MODKIT44 MODKIT45 MODKIT40 MODKIT41 Price Price Price Price Price £ 7.00 + vat £ 7.00 + vat £ 4.00 + vat £ 6.00 + vat £ 6.00 + vat Grandata Ltd distributor of electronic components

C1111\11= 1< EL-ECTI-F9CINIC Konig Remote Controls ELECTMONIC

Part No. Code Part No. Code Part No. Code Part No. Code Part No. Code Part No. Code Part No. Code MINIMINOM AKAI EERMISUL.0011111311Sti HITACHI NOKIA PHILIPS continued SHARP-santInuml TOSHIBAcontinued 072582E 1129700 68LS2 C24WS511T 1R9983 3126 199157 RC9020 199434 RRMCG0662PESA 199487 148088W IR9953 C72585 IR9700 A109 IR9259 C2514 IR9476 3126F 199157 RC9030 R9434 RRMCG0739BM5A IR9711 148018 IR9953 C72885 1R9700 A1412 199259 C2546 1R9677 C1 199161 RC9050 R9556 RRMCG0777PESA 199487 1480TBT 199953 C72885E 1R9700 A369 1R9259 C2546TN 1129677 C2 199161 RC9057 199710 RRMCG0833PESA 1129487 1480TBW R9953 1916 1R9700 B51F 1R9639 C2547TN 199677 C3 1129161 RC9060 199556 RRMCG0898CESA 199487 1480TBY R9953 RC556 1R9397 B51NX 1R9639 C2556TN 199983 C4 199161 RC9070 R9434 RRMCG1014BM5A 1R9711 1480TBZ R9953 RC85 1R9700 B59F 1R9639 C2566TN 199677 CM 1 R9569 R09133 1R9710 RRMCG1023BM5A 199711 151012BT 199962 B59N R9639 C2567TN 1R9983 D1 199161 RRMCG1031BM5A 199788 151012DT 199962 AMSTRAD B59NX IR9639 C2567TN2 199983 D2 R9161 SAMSUNG 129MCG103613M5A 199711 151097 1R9962 SRD550 IR9386 B68F IR9639 C2586TN 199983 El 199161 CX5312W 199432 RRMCG10468M5A 1R9788 155898 IR9962 SRX510 R9386 B68NX 199639 C2659H 199142 E2 1129161 CX5325W 199432 RRMCG10488M5A 199788 15599BT 1R9962 AE6001 1R9352 C59NX 1R9639 C2660 1R9142 EM2 199700 CX532WT 1129432 RRMCG1050BM5A 199788 15599BW 199962 C68NX 1R9639 C2661 199142 ES5 199701 CX534WT 199432 RRMCG2799CESA 199487 155R9BZ 199962 060 D51ND 1R9639 C2846TN 199677 FS10 199573 12M104 1R9432 SV2044G 1R9487 15699 199962 Beolink 100 R9843 D59F 1R9639 C2847TN 199677 FS11 R9506 RM109 1R9546 SV20445 1R9487 156998 199962 D59N 1R9639 C2856TN 199983 FS4/1 199573 SV2145G R9487 156998G 199962 BEISQ D68N IR9639 C2866TN 199877 FS412 IR9573 SANTO SV2145S 1R9487 156R9BW 199962 RC51321 199398 D78N 1R9639 C2886TN 199983 FS5 R9506 4AA4U1T0092 1129459 SV2577S IR9487 17201213 IR9962 RC51331 199398 E51N 199639 C28W410TN 199983 FS5/1 199573 JXBA 1R9457 SV2777S1 1R9487 1722TB IR9852 RC61331 1R9398 E5998 1129639 C28W510TN 199983 FS9 199506 JXCL 199530 SV28775 199487 1732TD R9852 RCU1734 199584 CBP1476R 199142 FS9 1R9573 JXCR 199530 SV2877S1 199487 210012E1 R9962 BLAUPUNKT RCU1742 199584 CBP164612 199142 Cl 199157 JXFF 199457 2100880 199962 8669493 . 1129188 RCU1785 199594 CBP2067 199142 C2 199157 JXGA 199139 SONY 2100RBT 199982 1532 199503 RCU1789 199594 CBP2216 R9142 M1 1129535 JXGE 199139 RM604 1129974 21019BZ 199962 1570-46 199516 RH880 189594 CBP222 IR9142 S1 IR9535 JXGT 199460 RM607 199974 210298Z 199962 8627 105 463 199188 RH885 199325 CBP226 1R9142 S2 199535 JXGW R9460 RM609 IR9974 2121RD IR9962 8668813000 199516 RHT01 199259 CBP260 1R9142 S3 199535 JXGY R9460 RM615 IR9511 2132DB IR9852 555-46 199516 RHT10 199639 CL2156TAN 199983 CN610 199752 JXLB R9460 RM620 199511 21409B 199852 563-46 1R9516 RHT30 199259 CL24W1TAN 199983 RCN620 199751 JXLG 199460 RM625 199511 2140TB 1R9852 816 1R9504 749F 1R9639 CL2556TAN 1R9983 RCN624 199757 RC238 R9974 12M630 199511 214118 199852 C16 1R9504 749N 199639 CL2586TAN 199983 SM1 199491 RC254 199974 RM631 1R9511 2145D8 199852 D32 IR9503 751F IR9639 CL2856TAN 199983 SM2 199491 RC258 1R9530 RM632 199511 2145DD 199852 L32 IR9503 751N IR9639 CL2886TAN IR9983 RC305 R9974 RM633 199511 2150TD 199953 M32 199503 759F 199639 CL28W1TAN 199983 PANASONIC RC307 R9457 RM634 IR9511 215208 IR9953 M55-16 199516 759N 199639 CL28WD2TAN 199983 62280227 199835 RC308 R9457 RM635 1R9511 215200 IR9953 M63-16.. 199516 768N 199639 CL32WD2TAN 199983 91005926 199835 RC317 R9457 RM640 199321 2155D8 R9953 M70-16 199516 T742 199584 CLE871A 199602 EUR50100 199826 RC318 199457 RM641 199321 216308 1R9953 P32 1129503 T752 199584 CLE871B 1R9602 UR51920 R9835 12C321 R9457 RM641A 199321 216308 1R9953 Q16 1R9504 7758 1R9584 CLE874A 1129602 1.11251921 199835 RC612 R9457 RM650 199336 216998 1129982 R32 IR9504 T789 IR9594 CLE874B IR9602 1 3592 IR9826 RC625 199457 RM651 1129336 2169982 R9962 TC106 189406 778DPL 1R9639 CLE876 IR9476 C1485DR IR9826 RC628 R9457 RM652 1129336 217308 1R9953 TC110 PIP 1R9248 CLE876C 199477 014518 199834 12C642 R9530 RM654 1R9336 218070 IR9953 TC143 199406 osTAR CLE876D 199477 C150E 199562 RC645 199974 RM656 199448 2181TB R9852 TC144 199406 105-068 199403 CLE876G 199477 C1856PFR 199826 RC685 1R9457 RM657 199336 2181TB 1R9953 TC190 199529 105209B 1R9862 CLE902A 199677 C1785DRS 199826 RC700 199139 RM658 199321 219R 199962 TC192 1R9529 105210A 199862 CLE902B 1R9677 1C1785112 199826 RC702 199139 RM661A 199321 21999B R9962 TC194 IR9529 105-219J 199854 CLE903A 199677 TC1785UR 199826 RC710 199139 RM670 1R9123 2199982 199962 105-224V IR9854 CLE921A 199983 TC2185DRS IR9826 RC711 199460 RM671 R9123 252208 199953 OMNI 105-2299 1R9854 CLE921B 199983 TC218519 IR9826 120901 R9139 RM672 R9123 2522DD R9953 RC51331 199398 105230A 1R9862 CLE922A 199982 TC21121C 199826 SO2 R9460 RM673 IR9123 2527DB IR9953 RC61331 189398 105-2300 1R9854 CLE922B 199982 TC21R1U 1R9826 S03 R9460 RM677 1R9448 2535DB IR9852 21907 199397 38T1 1R9854 CL9876E 199477 TC21S1R 1R9834 RM681 199442 2535DD 199852 CB20E4OX 199854 CP2146TA 199677 TCC23PFR 199826 SHARE RM682 1R9442 2537DD 199852 DAUM CBT2190E 199403 CP2546 199677 TNQ1410 199826 37AM12S R9788 RM683 1R9442 2545DB 199852 DM01414 IR9397 CBT4902 IR9403 CP2546TA 199677 INCI8E0421 1R9826 51AM12S R9788 RM684 199442 2545DD 199852 DMQ14A 1 1R9840 C8T4902E IR9403 CP2556TAN 1R9983 TNQ8E0422 IR9826 51AT15S 199788 RM685 199442 255078 199953 DMQ20A 1 1R9840 CBT9905 199403 CP2841TA 199677 INCI8E0428 189828 54AM12S R9788 RM686 R9442 255206 199953 DMQ2195 1R9840 VS068K 199862 CP2856TA 199983 TNQ8E0430 199826 54A715S R9788 RM687B IR9448 2552DD 199953 DMQ2595 1R9840 CP2856TAN 1R9983 TNQ8E0432 199826 54CSO5SN 199711 RM687C IR9448 2555 IR9953 DM02895 199840 GRUNDIG CP2886TAN 199983 TNQ8E0435 199836 5V2044 R9487 RM689 199441 2555DB 199953 CUC503 1R9614 CP28WD2TAN 1R9983 TN08E0436 199836 5V2145 R9487 RM694 R9452 2555DD 199953 FERGUSON CUC5200 1R9614 CP32WD2TAN 199983 180860441 199826 70CSO3S 199711 RM698 199442 2557DB 199953 20H3 IR9594 CUC5301 IR9529 CPT1556 199576 TM:18E0461 199834 72CS03S 199711 RM717 199448 2563DB 199953 2285 199584 CUC5302 IR9529 CPT1557 199576 TX14S1T 1R9834 72CSO5SN 199711 RM719 199448 256300 199953 22H3 1R9594 CUC5310 1R9614 CPT1560 1R9576 7%21519C 199834 C1421 R9487 RM816 1R9441 257308 199953 2415 R9584 RC212 1R9614 CPT1561 199578 TX21517 1129834 C2021 199487 RM817 IR9441 2577DB 199953 2422 R9584 RC300 199614 CPT2155 1R9575 TX21S1TC 199834 CV2121 R9487 RM820 199452 2579DB IR9953 2423 1R9584 TP500VT 199500 CPT2164 199575 TX21T1C 1R9826 CV3707 R9487 RM826 199441 26368 199953 2433 R9584 TP590VT 199509 CPT2558 1R9575 TX25A2C 199836 CV3709 R9487 RM828 199452 283508 199852 2445 IR9584 TP600VT 1R9509 CPT2564 199575 7)(25A2C1 1R9836 CV3710 199487 RM830 199443 283700 199852 2452 IR9584 TP610 IR9509 CPT2566 199575 TX25W2 199836 CV3720 199487 RM831 199443 285208 1129953 2453 1R9584 TP621 1R9299 CPT2669 1R9575 TX25W2C 199836 DV1416SN R9487 RM832 1R9443 285300 199953 2463 1R9584 TP630 199509 CPT2785 1R9575 TX25W2CI IR9836 DV1506SN 199487 RM833 1R9451 285500 199953 2475 199584 TP650 1R9509 CPT2870 1R9575 7)(28A10 199826 DV1706SN R9487 RM834 IR9452 285706 199953 26H3 R9594 TP661 199562 CST1430 1129576 TX28A2C R9836 DV21081S 199711 RM836 199871 285700 IR9953 29132 IR9584 TP661 TOP 199615 CST1435 199576 7)(28A2C1 199836 DV2130EX 199487 RM837 199451 286300 1R9953 36K2 1R9594 TP663 189614 CST1560 199576 TX28W2 199836 DV250715 199711 RM839 1R9871 28660D 199953 4193 199594 TP710 199529 C72116 199476 TX28W2C 199836 DV250735 IR9711 RM841 1R9452 2873013 199953 4233 1R9584 TP711 199529 CTRM200M 1129542 TX28XDPIC 199835 DV25081S 199711 RM842 IR9443 2877DB IR9953 4414 199584 TP712 199614 TX29AD1D 199835 DV250835 1129711 RM883 1R9871 2879DB 199953 4415 IR9584 TP715 1R9749 JVC TX29W2CI 1129836 DV280375 199711 RM886 1R9871 3327DB R9953 4423 IR9584 TP720 199614 AV21TSIEN 199698 TX33A2C 199838 DV280715 199711 3339DB 199953 4433 1R9584 TP76091F1 1R9614 AV25TS1EN 199698 TX33A2CI 199836 DV28081S 1R9711 THOMSON 3357DB 199953 51A0 1R9584 TP770 199749 AV25VM1EN 1R9698 PHILIPS DV280835 189711 14G21D570 IR9639 3377DB 1R9953 51A2 199584 TP771 199749 AV28VM1EN R9698 RC5002 199510 DV3750S 199788 14GM53 R9639 3387DB IR9953 51A3 199584 TP800 1R9749 AV29SX1EN R9698 RC5140 199510 DV3760S 199788 14GM56 1R9639 3787DB 199953 51A4 R9584 TP900 199749 AV29TS1EN 199698 RC5154 199510 DV5160S 199788 14M570 199639 40PW8DB 199953 51A5 1R9584 TRC1 199715 AV32WZ2EN 199698 RC5240 199510 DV5403S 199711 21M578 1R9639 48J6DB 1129953 51G2 199594 TRC2 199715 RC8072 199698 RC5250 199510 DV5432S IR9711 21MG51 IR9639 48PJ6DG 199953 1R9594 5103 808074 1R9698 805260 199510 DV5465S 1R9711 9251X1049 IR9508 55PJ6DB 1129953 51H3 1R9594 HITACHI RMC530 199698 RC5300 199510 DV5470S 199711 RCT2000 1R9259 56PW8D8 IR9953 51H4 R9594 2970491 R9479 RMC682 199698 RC5350 199510 DV5935H 199711 RCT3000 1R9831 7037DD IR9852 51J7 199594 A518780 199142 RMC761 1R9698 RC5410 199553 DV63015 1R9711 RCT5000 1R9259 705300 R9953 51K3 199594 C1405 1R9476 RMC7811E 1129698 RC5420 1R9553 DV6303S 1R9711 RCT5020 1R9502 CT6869 R9953 5980 1R9584 C1414 1R9476 RMC770 199698 RC5540 199510 DV6311S 199711 RCT51415 199470 CT9369 R9962 5982 1R9584 C2057H 1R9142 RMC771 199698 RC5701 199434 DV6313S R9711 CT9383 R9962 5983 1R9584 C2067 199142 RMC7711E 1R9698 RC5801 199553 DV63325 R9711 MAMA C79387 R9962 5984 1R9584 C2067H 199142 RMC793 199698 RC5801 199556 DV6336S R9711 1400 IR9962 C79396 199962 5985 199584 C2114 1R9476 RMC7931E 199698 9C5901 199558 DV7001S 199711 1400R IR9962 C79399 IR9962 59D2 1129584 C2146TN 199677 RC5903 199558 DV7002S 199711 140012B 1R9962 CT9414 IR9962 5903 1R9584 C2147TN 199677 LOEwE 12C6008 199434 DV7003S 1R9711 14009BG 199962 C19432 199962 5902 199594 C2156TN 1R9983 FB300 1R9616 RC6404 1R9465 DV7011S 1129711 1400913N 199962 0T9455 199962 5903 199594 C2166TN 199677 F850 199514 RC6416 199465 DV7024S 199711 140012BT 1R9962 CT9475 199962 59H4 1R9594 C2170TN 199983 FB52 199514 RC6512 199464 DV7032S 1R9711 1400RBW R9962 C79476 199962 5995 1R9594 C2186TN 199983 F870 199514 RC6804 R9434 DV7036S 199711 1400913T R9962 C79480 199962 59J7 1R9594 C2257H 199142 F872 199514 907118 R9464 RRMCG03510ESA 1R9487 1440913 R9852 CT9552 1R9962 59LS2 1R9639 C22599 199142 F890 199514 RC7141 199465 RRMCG03510ESB R9487 14401213T IR9852 079626 199953 8223 R9584 C2261 R9142 F891 199514 RC7500 199464 RRMCG03510ESD R9487 1440RD IR9852 C19784 IR9953 6245 199584 C2267H 199142 RC7507 199710 RRMCG0370CESA R9487 144078 199852 C19785 IR9953 6682 199584 C2268H 199142 RC7512 199864 FORMCG0483PESA 199487 1440TBT R9852 CT9859 R9953 6683 1R9584 C2273 199142 0760047240 89490 RC7535 199864 RRMCG0489CESB 199487 145088 R9852 CT9867 R9953 6693 199594 C22731-1 199142 076L067240 89490 12C8201 199434 RRMCG0568PESA 199487 145090 R9852 CT9868 1R9953 6694 1R9594 C24W1TN 199983 2076R 1129490 RC8205 199710 RRMCG0617PESA 199487 1480RB R9953 C79900 199953 68H5 1R9594 C24W5117N 199983 2092T 199490 RC9010 199434 RRMCG0618PESA 1R9487 1480RBT R9953 CT9949 R9953 Price :E. 6.50 + vat each This is just a selection of Konig Remote Controls thatwe stock. Grandata Ltd distributor of electronic components Transistors / Linear IC's

Part No. Price Part No. Price Part No. Price Part No. Price Part No. Price Part No. Price Part No. Price Part No. Price Part No. Price

BU208A £0.75 RF5450 £5.00 MJE350 £0.80 STK4191 £9.00 STK5464 £3.00 STR371 £4.00 TDA2450-3 £10.00 10A4665 £2.50 TDA8138 £2.00 BU2506DF £0.90 RF5740 £3.00 MJF STK4191 X E14.00 STK5466 £5.00 STR380 £3.50 TDA2460-2 £0.70 TDA4670 £4.75 TDA8138A £1.30 BU2506DX £1.00 RF5840 £3.00 MJF16206 £4.50 STK419-130 £15.00 STK5467 £4.00 STR381 £3.90 TDA2501 £3.00 TDA4671 £5.00 TDA8138B £2.00 BU2508A £1.00 RF610 £0.80 MJF18004 £1.75 STK419-140 £16.00 STK5468 £3.00 STR383 £4.10 TDA2506T £8.00 TDA4680 £3.50 TDA8139 £2.00 BU2508AF £1.10 RF611 £1.20 MJF18006 £2.00 STK4192 £7.00 STK5471 £9.00 STR384 £3.50 TDA2507 .. £4.50 TDA4681 £4.50 TDA8140 £2.00 BU2508AX £1.30 RF620 £1.00 MJF18008 £1.75 STK4197 II £9.50 STK5472 £3.75 STR40090 £3.50 TDA2510 £4.50 TDA4685 £2.75 TDA8143 £1.60 BU25080 £1.30 RF630 £0.75 MJF18204 £2.50 STK4199 II £10.50 STK5473 £4.80 STR40115 £6.00 TDA2514A £5.00 TDA4686 £5.00 TDA8145 £120 BU2508DF £1.20 RF634 £1.25 STK0025 £4.20 STK4199I1 £10.50 STK5474 £5.00 STR4090A £6.50 TDA2515 £4.50 TDA4687 £5.00 TDA8146 £2.00 BU2508DX £1.50 RF640 £1.50 STK0039 £6.00 STK420 £4.00 STK5476 £3.50 STR41090 £3.30 TDA2520-1 £9.00 TDA4700A £7.50 TDA8153 £10.00 BU2520AF £1.70 RF640F £2.00 STK086 £10.00 STK4204 II £10.50 STK5477 £4.50 STR4142 £4.50 TDA2521 .. £8.00 TDA4710H £7.00 TDA8170 £1.70 BU2520AX £1.40 RF630S £2.00 STK1039 £4.60 STK420411 £10.50 STK5478 £2.50 STR4211 £3.15 TDA2522 .. £12.00 TDA4714C £3.50 TDA8171 £2.30 BU2520DF £2.25 RF642 £2.00 STK1040 £6.40 STK4211 II £10.00 STK5479 £3.00 STR43111 E9.50 TDA2523 £8.50 TDA4716C £4.50 TDA8172 £2.00 BU2520DX £2.00 RF644 £2.00 STK1049 £7.00 STK4211 V £8.00 STK5481 £4.70 STR440 £8.00 TDA2525 £4.50 TDA4720 £6.60 TDA8173 £1.75 BU2522AX £1.50 RF650 £2.00 STK1050 £6.50 STK4221 II £12.00 STK5482 £2.85 STR441 £9.50 TDA2530 £3.00 TDA4725 £7.50 TDA8174 £2.00 BU2525A £3.25 RF710 £1.50 STK1060 £7.00 STK4231 II £10.50 STK5483 £4.40 STR44115 £4.75 TDA2548 £2.00 TDA4780 £6.00 TDA8175 £7.00 BU2525AF £2.20 RF720 £0.85 STK2025 £6.20 STK4231 V £14.00 STK5486 £4.50 STR442 £16.00 TDA2549 .. £3.00 TDA4800 £3.00 TOA8177 £3.00 BU2525AX £1.90 RF730 £1.25 STK2028 £5.00 STK4241 £10.50 STK5487 £5.25 STR450A £7.00 TDA2558 £4.00 TDA4810 £5.00 TDA8177F £3.50 BU25250 £2.40 RF740 £0.90 STK2029 £6.00 STK4241 V £12.50 STK5488 £4.80 STR451 £8.00 TDA25600 £7.00 TDA4850 £4.75 TDA8179S £7.50 BU2525DF £1.75 RF740F £3.00 STK2030 ...... £10.00 STK4272 £5.00 STK5490 £4.50 STR45111 £5.50 TDA2560-3 £14.00 TDA4851 £325 TDA8180 £12.50 BU2527AF £4.00 RF820 £0.90 STK2038 £7.00 STK4273 £5.50 STK561 £4.00 STR4512 £4.00 TDA2574V £3.50 TDA4852 £3.25 TDA8205 £12.50 BU2527AX £2.50 RF830 £0.85 STK2048 £9.50 STK4274 £5.00 STK563 £4.15 STR452 £4.75 TDA2576A £9.00 TDA4854 £5.00 TDA8212 £3.50 BU2527DF £2.00 RF830F £1.60 STK2058 IV £16.00 STK4274 £5.00 STK5632 £3.00 STR453 £5.00 TDA2577A £2.00 TDA4855 £6.00 TDA8214B £10.50 BU2527DX £2.00 RF840 £0.85 STK2101 £10.50 STK430 £5.00 STK5720 £4.00 STR454 £13.00 TDA2578A £7.00 TDA4856 £5.00 TDA8215H £3.00 BU2532AL £3.25 RF840F £1.75 STK2110 £5.50 STK4301 £5.00 STK5725 £3.50 STR455 £5.50 TDA2579A £2.10 TDA4858 £350 TDA8217 £2.25 BU2708AF £2.00 RF9140 £10.00 STK2139 £6.75 STK4311 £6.50 STK5730 £3.00 STR456 £4.70 T0A2579B £3.25 TDA4860 £2.00 TDA8303 £2.50 BU2708AX £2.00 RF9230 £4.00 STK2155 £9.00 STK433 £4.00 STK583 £4.00 STR457 £6.00 TDA2652 £48.00 TDA4861 £3.50 TDA8304 £4.00 BU2708DF £2.00 RF9510 £1.50 STK2230 £4.70 STK4332 £3.65 STK6316 £3.00 STR470 £3.00 TDA2653A £4.50 TDA4866 £2.75 TDA8305 £5.00 BU2708DX £2.00 RF9511 £1.50 STK3102 II £5.30 STK435 £3.75 STK6324B £5.00 STR50020 £3.50 TDA2710-1 £4.00 TDA4880 £4.50 TDA8305A £5.00 BU2720AX £2.00 RF9520 £1.50 STK3106 £25.00 STK4352 £5.00 STK6327 £12.00 STR50092 £5.50 TDA2820M £1.00 TDA4918A £17.00 TDA8310 MOO BU2720DF £2.00 RF9530 £1.25 STK3122 III £7.25 STK436 £4.30 STK6328A £4.00 STR50103A £2.60 TDA2822M £0.60 TDA4930 £5.00 TDA83500 £2.75 BU2720DX £2.00 RF9531 £2.00 STK3152 II £9.00 STK4362 £4.50 STK6431 £6.00 STR50112A £6.50 TDA3190 £2.00 TDA4935 £3.00 TDA8351 £2.00 BU2722AF £3.30 RF9540 £1.75 STK3156 £5.00 STK437 £6.00 STK6607 £4.00 STR50113 £5.00 TDA33018 £16.00 TDA4940 £2.00 TDA83540 £2.75 BU2725AF £2.00 RF9541 £2.00 S1K350-030 £7.00 STK4372 £4.90 STK8712BIV £5.50 STR50115 £5.00 TDA3303 £7.00 TDA4941 £2.80 TDA8356 £2.00 BU2725DF £2.00 RF9610 £0.95 STK392-040 £12.00 STK439 £5.00 STK6722 £6.50 STR50213 £4.00 TDA3501 £3.00 TDA4942 £2.00 TDA8360N3 £8.00 BU2725DF £2.00 RF9620 £0.85 STK401-050 £8.00 STK4392 £5.00 STK6732 £10.00 STR50330 £4.75 TDA3502 £3.60 TDA4950 £1.00 TDA8361AN3 £8.00 BU2727AF £2.00 RF9622 ...... £2.00 STK401-080 £9.00 STK441 £6.80 STK6822 £7.50 STR51041 £5.00 TDA3504 £3.00 TDA4951 £4.50 TDA8361N3 £9.00 BU2727A £2.00 RF9630 £1.30 STK401-120 £10.00 STK4412 £4.50 STK6875 £6.50 STR51213 £5.00 TDA3507 £4.50 TDA5010 £3.00 TDA8362AN £12.00 BU2727AF £2.00 RF9640 £2.30 S1K401-140 £12.00 STK443 £7.00 STK6922 £10.00 STR51424 £7.00 TDA3521 £7.50 TDA5400 £6.00 TDA8362AN3 £7.50 BU506DF £1.00 RFBC20 £1.10 STK4017 £4.00 STK4432 £6.00 STK6932 £4.50 STR53041 £4.00 TDA3560 .. £6.00 TDA5500 £9.00 TDA8362BN3 £8.50 BU508AF £0.80 RFBC30 £1.20 STK4019 £4.80 STK457 £4.70 STK6962 £2.75 STR54041 £3.20 TDA3561 £3.00 TDA5600 £4.50 TDA8362N3 £12.00 BU508APH £0.60 RFBC40 £2.10 STK402-040 £7.00 STK459 £5.60 STK6972 £3.00 STR5412 £2.80 TDA3561A £3.00 TDA5610-2 £7.50 TDA8362N4 £9.00 BU508AXI £0.90 RFBE30 £2.25 STK402-070 £7.00 STK460 £6.60 STK6981B £5.00 STR55041 £4.50 TDA3562A £2.60 TDA5620 £4.50 TDA8362N5 £12.00 BU508D £0.75 RFD120 £1.00 S1K402-070 £7.00 STK461 £6.00 STK6982 £6.00 STR58041 £5.50 TDA3563 .. £3.50 TDA5702 £13.00 TDA8366N2 £15.00 BU508DF £0.85 RFC/9120 £1.20 STK402-071 £7.00 STK463 £9.50 STK6982H £8.00 STR58041 £2.50 TDA3563A £4.00 T0A5830-2 £11.00 TDA8366N3 £11.50 BU508DR £1.30 RFD9220 £1.00 STK402-090 £8.00 STK465 £9.00 STK7216 £4.20 STR59041 £3.00 TDA3564 £3.25 TDA61000 £1.50 TDA8370 £11.50 BUH1015 £4.25 RFF120 £3.00 STK4021 £3.80 STK4773 £8.20 STK7217 £2.50 STR60001 £5.25 TDA3565 £2.20 TDA6101Q £1.20 TDA8372A £16.50 BUH1215 £4.50 RFIBC40 £1.00 STK402-100 £9.00 STK4793 £8.00 STK7225 £5.00 STR6008X £5.75 TDA3566 £2.80 TDA6103Q £2.25 TDA8374 £10.00 BUH515 £2.00 RFIBC40G £2.00 STK402-100 £9.00 STK4803 £10.00 STK7226 £17.00 STR6020 £2.70 TDA3566A £3.00 TDA6106Q £1.25 TDA8375A £12.50 BUH515D £2.50 RFP054 £4.00 STK402-120 £9.00 STK4813 £6.00 STK7233 £7.00 STR61001 £4.75 TDA3567 £3.50 TDA6107Q £3.00 TDA8376 £15.00 BUH517 £2.75 RFP084 £5.00 STK4024 II £5.50 STK4833 £8.50 STK7251 £5.00 STR7001 £6.00 TDA3569 £3.00 TDA6108JF £3.00 TDA8380 £2.00 BUH517D £1.75 RFP140 £2.50 STK4025 E5.30 STK4843 £7.20 STK7253 £6.50 STR80145 £4.75 TDA3570 £3.75 TDA6111Q £2.25 TDA6424 £4.00 8UH715 £4.25 RFP150 £2.40 STK4026 £4.80 STK4853 £17.00 STK730-060 £6.50 STR81145 £3.75 TDA35766 £7.00 TDA6120Q £5.50 TDA8425 £5.00 BUL310 £1.25 RFP240 £3.00 STK402611 £4.80 STK4863 £7.00 STK730-080 £6.00 STR81159 £4.00 TDA3650 .. £6.75 TDA6160-26 £4.75 TDA8432 £5.50 BUL381 £1.50 RFP250 £2.80 STK4026V £5.00 STK4873 £11.00 STK7308 £7.00 STR8124 £10.00 TDA3651 .. £2.00 TDA6160-2X £2.50 TDA8433 £6.00 BUL381D £1.25 RFP340 £2.50 STK4028 £5.50 STK488-010 £8.00 STK7309 £4.00 STR83145 £5.00 TDA3651A £3.50 TDA7052 £1.20 TDA8440 £3.00 BUT11A £0.35 RFP350 £3.25 STK4032 11 £5.10 STK488-050 £8.00 STK7310 £320 STR83159 £7.00 TDA3652 £5.00 TDA7056 £2.00 TDA8443 £3.50 BUT11AF £0.35 RFP360 £8.00 STK4034 X £9.25 STK4893 ...... £10.00 STK73405 II £5.50 TDA1420 £8.00 TDA3652TX10 ....£8.00 TDA7262 £3.25 TDA8451 £3.25 BUT11AX £0.50 RFP450 £2.70 STK4036 £4.70 STK4913 £9.00 STK73410 £3.50 TDA1470 £12.00 T0A365313 £0.80 TDA7263 £3.50 TDA8453 £3.50 BUT12 £0.80 RFP460 £4.00 STK4036V £8.00 STK501 £5.50 STK73410 11 £5.00 TDA1514A £3.25 TDA3653C £0.85 TDA7263M £4.00 TOA8461 £9.50 BUT12A £0.80 RFP9140 £14.50 STK4038 £6.80 STK50322 £3.50 STK7348 £4.00 TDA1540 £4.20 TDA3654 £0.80 TDA7264 £5.00 TDA8501 £3.75 BUT12AF £0.90 RFP9240 E3.00 STK4040 II £6.50 STK5314 £4.75 STK7356 £4.25 TOA1541 £5.00 TDA3654Q £0.85 TDA7265 £5.00 TDA8505 £11.00 BUT18 £0.80 RFPC40 £3.00 STK4042 II £8.00 STK5315 £5.00 STK7358 £4.40 TDA1541A £4.00 TDA3724 £3.00 TDA7266 £5.00 TDA85600 £4.25 BUT18A £0.80 RFPC50 £4.50 STK4046 £9.50 STK5323 £6.00 STK7359 £4.25 TDA1546T £11150 TDA3725 .. £3.00 TDA7269 £5.00 TDA8561Q £5.25 BUT18AF £0.85 RFPC60 £6.00 STK4050 II £16.00 STK5324 £3.00 STK73605 £3.75 TDA1547 £10.00 TDA3730 . £4.00 TDA7269A £2.75 TDA8562Q £5.00 BUT56A £0.65 RFPE40 £5.50 STK405-030 £7.00 STK5325 £3.70 STK73907 £7.00 TDA1552Q £3.50 TDA3740 £4.00 TDA7293V £5.50 TDA85630 £4.75 BUT56AF £2.00 RFPE50 £4.50 STK405-050A....£12.00 STK5326 £7.50 STK73908 £5.50 TDA1553AQ £3.25 TDA3750 .. £4.00 TDA7294V £5.50 TDA85650 £11.00 BUZ71 £0.75 RFPF40 £5.50 STK405-070A £8.00 STK5330 £8.50 STK73908 £5.50 TDA1553CQ £3.00 TDA3770 £7.75 TDA7295 £4.00 TDA8566Q £5.50 BUZ71AF £1.00 RFPF50 £4.50 STK4050V £15.00 STK5331 £3.00 STK7402 £5.60 TDA1554Q £3.00 TDA3771 .. £4.60 TDA7296 £5.00 TDA85670 £7.00 BUZ72A £1.00 RFS740 £1.75 S1K405-120 £11.00 STK5332 £1.80 STK7404 £6.00 TDA1555Q £3.75 TDA3803A £5.00 TDA7297 £3.50 TDA85680 £6.00 BUZ72AF £1.00 RFS840 £1.25 STK4060 £5.10 STK5333 £13.50 STK7406 £6.50 TDA1556Q £3.25 TDA4400 .. £1.75 TDA7300 £5.50 TDA8569Q £8.00 BUZ73A £1.50 RF220 £0.65 STK4065 £6.50 STK5335 £3.50 STK7406H £7.50 TDA15570 £3.00 TDA4420 £1.20 TDA7302 £4.50 TDA8571J £9.00 BUZ73AF £0.60 RFZ42 £2.75 STK407-040 £7.00 STK5336 £3.50 STK7408 £6.75 TDA15580 £3.00 TDA4421 £3.00 TDA7310 £8.00 TDA8703 £5.00 BUZ76A £1.10 RFZ44 £1.60 STK407-070 £8.50 STK5337 £5.00 STK7410 £15.00 TDA1561Q £5.00 TDA4422 £2.00 TDA7312 £4.50 TDA8708 £6.00 BUZ77A £2.00 RFZ46N £1.50 STK407-090 £8.50 STK5338 £2.95 STK7458 £12.50 TDA1562Q £5.50 TDA4427 £3.00 TDA7313 £6.50 TDA8709 £7.00 BUZ77B £2.50 RFZ48 £2.75 STK4101 £5.00 STK5339 £4.00 STK746 £9.00 TDA1580 £4.25 TDA4429T £20.00 TDA7318 £5.50 TDA8741 £5.50 BUZ80 £1.35 MJ10016 £7.00 STK4111 £4.00 STK5340 £3.50 STK752 £3.00 TDA1599 £4.00 TDA4431 £1.50 TDA7330A £7.00 TDA6745 £8.50 BUZ80AF £2.00 MJ11015 £2.50 STK4112 £5.00 STK5342 £2.45 STK7554 £4.80 TDA1602A £4.00 TDA4474 £4.00 TDA7340 £8.00 TDA8840 £10.00 BUZ83 £2.00 MJ11016 £3.00 STK411-230 £12.00 STK5343 £3.80 STK7561 £6.50 TDA16846 £2.00 TDA4480 £6.00 TDA7350 £3.00 TDA8841 £10.00 8UZ900 £10.00 MJ11032 £8.00 81K411 -240E 114.00 STK5352 £5.00 STK7561A £7.00 TDA1670A £2.00 TDA4481 £2.15 TDA7359 £3.00 TDA8842 £14.00 BUZ901 £15.00 MJ11033 £8.00 STK4121 £4.80 STK5352 £5.00 STK7562 £10.00 TDA1675 £2.50 TDA4482 £11.00 TDA7360 £7.00 TDA8843 £15.00 BUZ905 £10.00 MJ15003 £2.50 STK412-150 £18.50 STK5353 £4.00 STK7563 £8.00 TDA1675A £2.00 TDA4500 £3.00 TDA7362 £4.50 TDA8844 £14.00 BUZ906 £16.00 MJ15004 £3.00 STK4122 £5.60 STK5361 £3.75 STK7563F E6.50 1DA18833 £2.00 TDA4501 .. £2.80 TDA7365 £5.50 TOA9102C £2.50 BUZ90 £1.50 MJ15015 £2.50 STK4130 II £7.00 STK5362 £4.00 STK7573 £3.00 TDA16846 £2.00 TDA4502 £4.00 TDA7370V £3.25 TDA9103 £4.75 BUZ90A £1.80 MJ15016 £3.50 STK4130I1 £7.00 STK5364 £2.50 STK7576 £15.00 TOA1701 £14.00 TDA4503 £3.25 TDA7372A £4.50 TDA9105 £5.00 BUZ90AF £2.80 MJ15022 £4.00 STK4131 £4.80 STK5364 £2.50 STK760 £5.00 TDA1770 £7.50 TDA4504B £8.00 TDA7374V £3.50 TDA9109 £10.00 BUZ91A £2.60 MJ15023 £4.00 STK4132 II E6.00 STK5371 £3.50 STK761 £3.00 TDA1771 £2.00 TDA4505A £3.00 TDA7375V £525 TDA9141 £6.25 BUZ93 £1.50 MJ15024 £3.00 STK4133 II £7.50 STK5371 £3.50 STK770 £4.00 TDA1870A £2.00 TDA4505E £6.50 TDA7376B £10.00 TDA9143 £4.00 RF120 £2.25 MJ15025 £3.00 STK4140 II £8.00 STK5372 £2.60 STK7707 £9.00 TDA1872A £2.75 TDA4510 £2.00 TDA7377 £4.50 TDA9144 £12.00 RF130 £4.75 MJE13004 £1.00 STK4141 II £4.20 STK5373 £3.75 STK780 £4.80 TDA1908A £2.50 TDA4556 £3.70 TDA7381 £11.00 TDA9151 £11.00 RF140 £5.50 MJE13005 £0.60 STK4141 V £6.00 STK5383 ...... £3.00 STK78603 £7.50 TDA1940 £6.00 TDA4557 £4.00 TDA7384A .. £11.00 TDA9160A £9.50 RF230 £5.50 MJE13007 £1.00 STK4142 £5.30 STK5391 £3.75 STK78617 £24.00 TDA1941 £3.00 TDA4560 E2.70 TDA7385 £10.00 TDA9162 £11.00 RF240 £4.25 MJE13009 £1.00 STK4151 £6.80 STK5392 £5.00 STK795 £3.25 TDA2003 £0.65 TDA4565 £1.50 TDA7386 £11.00 TDA9170 £7.00 RF250 £3.75 MJE15028 £2.00 STK4152 £6.50 STK5421 £4.50 STK8050 £16.00 TDA2004 £1.50 TDA4566 £2.50 TDA7393 £10.00 TDA9176 £6.50 RF251 £6.50 MJE15029 £2.00 STK4154V £14.00 STK5422 £3.75 STK8250 £5.00 TDA2005 £1.50 TDA4568 £2.25 TDA7394 £6.00 TDA9177 £8.00 RF330 £6.00 MJE15030 £2.50 STK4161 £6.50 STK5431 E5.50 STK8260 £12.00 TDA2006 £0.70 TDA4580 £10.00 TDA7396 £4.50 TDA9210 £4.50 RF340 £3.25 MJE15031 £4.00 STK4161V £8.50 STK5434 £5.70 STK8280 £18.50 TDA2009 £1.60 TDA4600 £2.00 TDA7431 £7.00 TDA9302H £2.25 RF350 £7.50 MJE16002 £3.00 STK4162 £5.50 STK5436 £5.00 STR10006 £4.50 TDA2020 £1.20 1DA460011 £1.60 TDA7439 £6.50 TDA9500 £7.50 RF440 £5.50 MJE18004 £1.25 011(4164 11 £11.75 STK5441 £3.50 STR11006 £3.25 TDA2030 £0.80 TDA4601 £1.20 TDA749S £4.25 TDA9503 £9.00 RF450 £6.50 MJE18006 £1.20 STK4171 £9.00 STK5443 £5.75 STR17006 £5.00 TDA2030H £1.00 TDA4601D £0.65 TDA7560 £18.00 TDA9610H £9.50 £8.00 RF510 £0.70 MJE18008 £1.50 STK417-130 £15.00 STK5446 £3.50 STR20005 £4.50 TDA2048 £6.00 TDA4605 £1.90 TDA8000 £4.25 TDA9614H RF520 £0.75 MJE243 £0.60 STK4172 II £6.80 STK5451 £3.90 STR30115 £2.75 TDA2050V £2.00 TDA4610 £3.70 TDA8116 £3.50 RF530 £0.75 MJE253 £0.85 STK4181 £6.80 STK5461 £5.00 STR3315 £2.75 TDA2051V £4.50 TDA4650 £3.00 TDA81208 £4.00 RF540 £1.00 MJE340 £0.25 STK4182 II £9.00 STK5462 £3.50 STR370 £3.00 TDA2052V £5.25 TDA4651 £8.00 TDA8137 £2.00 Please note that this a very small selection of the transistors and IC's that we stock. We stock a full range of Japanese Transistors 2SA,2SB, 2SC,2SD,2SJ,2SK series , Diodes , CMOS , TTL Logic ICs ,

Computer ICs , Zenor Diodes...etc

K.P. House , Unit 15 , Pop In Commercial Centre , Southway , Wembley , Middlesex . HA9 OHB England Tel: (020) 8900 2329 Fax : (020) 8903 6126 Email : [email protected] Grandata Ltd distributor of electronic components Line Output Transformers Earllisa CA? Price Part No Code Pikepatuk cede Price Part No code EkePart No Code 7=1 ALM HITACHI -continued PANASONIC -continued PHILIPS contlnued THOMSON-continued 3714002 LOTO2 £12.00 2433453 L0T82 £12.50 TLF 14568 F LOT40 £15.00 AT 2079 / 21 LOT395 £12.00 10588080 P2 LOT1505 £19.00 043714002J LOTO2 £12.00 2433751 LOTO1 £13.00 TLF 14584 F LOT41 £17.00 AT 2079 / 24 LOT392 £15.00 151128140 LOT1505 £19.00 43700000 LOTO2 £12.00 2433752. LOTO1 £13.00 TLF 14586 F LOT42 £17.00 AT 2079 / 40 L0T73 £11.50 151281.4 LOT1505 £19.00 2433891 L0T23 £12.50 AT 2079 / 99 LOT276 £14.00 15128140 LOT1505 £19.00 AMSTRAD 2433892 LOT84 £14.50 PHILIPS AT 2079/30 01 LOT106 £12.50 153144.6 LOT1505 £19.00 1810951 LOT55 £14.00 2433893 LOT23 £12.50 3119 108 31260 LOT90 £12.50 AT 2079/30102 LOT106 £12.50 15314460 LOT1505 £19.00 3714002 LOTO2 £12.00 2433952 L0T33 £10.00 3119 108 31290 ....L0173 £11.50 1531447 A LOT1505 £19.00 043714002J LOTO2 £12.00 2434002 LOT226 £14.50 3119 108 31440 ..LOT433 £16.00 SAISHO 1532873 A LOT1505 £19.00 43700000 LOTO2 £12.00 2434141 LOT33 £10.00 3119 108 31441 ..LOT433 £16.00 3714002 LOTO2 £12.00 3233500 LOT244 £14.50 AM152591 LOT55 £14.00 2434274 LOT44 £10.50 3119 108 31442 ..LOT433 £16.00 043714002J LOTO2 £12.00 3233900 LOT244 £14.50 2434393 LOT405 £22.50 3119 198 62930 L0T57 £11.00 43700000 LOTO2 £12.00 40011200 L0T244 £14.50 FERGUSON 2434593 LOT44 £10.50 3122 108 10246 ....LOT111 £15.00 7140021 LOTO2 £12.00 40148300 LOT244 £14.50 00 D-3-508-002 LOT381 £15.50 2435006 LOT401 £17.00 3122 138 36070 ..LOT111 £15.00 06 D-3-083-001 LOT82 £12.50 2435131 LOT251 £14.50 3122 138 36072 ..LOT111 £15.00 SHARP TOSHIBA 06 D-3-083-002 LOT82 £12.50 2436201 LOT90 £12.50 3122 138 36920 L0T57 £11.00 RTRNF 1220 CEZZLOT39 £18.50 1810951 LOT55 £14.00 06 D-3-084-001 LOT23 £12.50 23236465 L0T392 £15.00 3122 138 36922 L0T57 £11.00 RTRNF 2001 CEZZLOT338 £17.50 2433751 LOTO1 £13.00 06 D-3-087-001 LOT23 £12.50 2433891H LOT23 £12.50 3122 138 36923..L0T57 £11.00 RTRNF 2006 CEZZLOT308 £13.5023236098 LOT288 £14.00 06 D-3-088-001 LOT84 £14.50 45150504 LOT362 £16.00 3122 138 37050 ..LOT132 £15.00 RTRNF 2023 CEZZLOT310 £15.00 23236198 LOT288 £14.00 06 D-3-093-001 ....LOT204 £16.00 3122 138 37620..LOT90 £12.50 23236201 LOT395 £12.00 06 D-3-508-003 ....LOT276 £14.00 MATSUI 3122 138 37771 ..LOT129 £14.00 SONY 23236245 L0T395 £12.00 06 D-3-512-001 ....L0T204 £16.00 20070 LOT438 £16.00 3122 138 37992 ..LOT1116 £19.00 1-439-286-00 L0T46 £13.00 23236255 LOT289 £15.00 29201-022-01 LOT63 £17.00 20071 LOT438 £16.00 3122 138 38040 L0T73 £11.50 1-439-286-11 LOT46 £13.00 23236425 LOT288 £14.00 473197 LOT304 £15.50 20072 LOT438 £16.00 3122 138 38123 ..LOT395 £12.00 1-439-286-12 LOT46 £13.00 23236427 LOT395 £12.00 059 / 37 LOT200 £14.00 20073 LOT438 £16.00 3128 138 20200 ..LOT433 £16.00 1-439-286-13 LOT46 £13.00 23236428 LOT289 £15.00 20074 LOT438 £16.00 3128 138 20201 ..LOT433 £16.00 1-439-286-21 LOT46 £13.00 23236424 L0T129 £14.00 GOODMANS 20075 LOT438 £16.00 3128 138 20202 ..LOT433 £16.00 1-439-332-41 LOT100 £15.00 TFB 4090 AD LOT395 £12.00 1142.5057 LOT1164 £15.00 3714002 LOTO2 £12.00 3138 108 30100 ....LOT106 £12.50 1-439-332-42 LOT101 £14.50 TFB 4124 AE LOT392 £15.00 1142.5077 L0T1164 £15.00 3221008 LOT438 £16.00 3138 108 30101 ..LOT106 £12.50 1-439-332-52 LOT100 £15.00 TFB 4124 AP LOT392 £15.00 1142.5079 L0T1164 £15.00 043714002J LOTO2 £12.00 3138 108 30103 ....LOT106 £12.50 1-439-363-11 LOT268 £14.00 1142.5081 L0T1164 £15.00 043221088P LOT438 £16.00 3139 128 30400 LOT90 £12.50 1-439-363-21 L0T268 £14.00 1152-5016 LOT1934 £19.00 43700000 LOTO2 £12.00 40348-08 LOT1577 £18.00 1-439-387-11 LOT311 £14.50 We are stockist of both 1179.0387 LOT1147 £16.00 7140021 LOTO2 £12.00 40348A-08 L0T1577 £18.00 1-439-387-21 LOT311 £14.50 1192.0527 LOT1147 £16.00 40348A-09 L0T1577 £18.00 1-439-416-11 LOT255 £16.00 Konig 1352.5008 LOT1167 £15.00 MITSUBISHI 4812 140 10246 .LOT111 £15.00 1-439-416-12 LOT255 £16.00 1352.5008E LOT1167 £16.00 731003 LOT51 £15.50 4812 140 10349 ..LOT106 £12.50 1-439-416-21 LOT255 £16.00 and 1352.5016 LOR 1934 £19.00 334 P 18506 LOT51 £15.50 4812 140 10369 LOT90 £12.50 1-439-416-23 LOT255 £16.00 1352.5027 LOT1270 £16.00 4812 140 10421 LOT90 £12.50 1-439-416-41 LOT255 £16.00 1352.5033 LOT1270 £16.00 OREGA 4822 140 10246 ..LOT111 £15.00 1-439-416-51 LOT255 £16.00 HR Diemen 40153201 LOT349 £17.50 4822 140 10274 ..LOT123 £14.50 11.111 4822 140 10306 ....LOT57 £11.00 THOMSON LOPT's 3714002 LOTO2 £12.00 QRIQN 4822 140 10349 ..LOT106 £12.50 105009.8 LOT1505 £19.00 043714002J LOTO2 £12.00 3714002 LOTO2 £12.00 4822 140 10381 ..LOT128 £13.00 10500980 LOT1505 £19.00 This is just a selection 43700000 LOTO2 £12.00 043714002J LOTO2 £12.00 4822 140 10384 ..LOT127 £15.50 10500980.P1 LOT1505 £19.00 CF 124 B LOT67 £14.50 43700000 LOTO2 £12.00 4822 140 10406 LOT73 £11.50 10531460 LOT1505 £19.00 of the LOPT's that we CF 124 E LOT67 £14.50 4822 140 10544 ..LOT433 £16.00 105660.6 LOT1505 £19.00 PANASONIC 4822 140 10566 ..LOT433 £16.00 105660060 LOT1505 £19.00 stock....Please call on HITACHI TLF 14512 F LOT39 £18.50 AT 2076 / 10 LOT57 £11.00 10566060 LOT1505 £19.00 020 8900 2329 for copy 2424593 LOT44 £10.50 TLF 14520 F LOT40 £15.00 AT 2077 / 81 LOT121 £15.00 10566060.P2 LOT1505 £19.00 2432461 LOT169 £15.00 TLF 14521 F LOT39 £18.50 AT 2078 / 21 LOT395 £12.00 105880.8 LOT1505 £19.00 of our LOPT catalogue 2432761 LOT169 £15.00 TLF 14567 F LOT39 £18.50 AT 2079 / 15 LOT129 £14.00 10588080 LOT1505 ..£19.00 CD Pick Ups and Mechanisms

Part No PricePart No Price Part No Price CDM12.1 Mechanism ..£14.00KSS 213 B £8.75 OPTIMA 6 S £11.50 KHM220AAA KSS 213 C £9.50 OPTIMA 5 £11.50 DVD Laser £ 40.00KSS 213 D £16.00 RCTRTH8151 £20.00 KSS 210A Original ...£11.00KSS 213 F £12.00 RCTRTH8112 £14.00 KSS 210A Replacement £9.50KSS 240 A £30.00 RCTRH8147 Mech ....£ 10.00 KSS 210 B £15.00NKS 240 A Replacment for KSS240A...£20.00 Check out our Online Catalogue at www.grandata.co.uk This advertisement is just a selection of our stock. Please contact us if you cannot find the part you are looking for. * Please add £1 p+p and VAT to all orders (Unless Otherwise stated) * All components are brand new * We accept payment by Access, Switch , Visa , Cheque and Postal Order * All prices quoted are subject to availabilty and may be changed without prior notice E & OE

K.P. House, , Unit 15Pop In Commercial Centre,Southway,Wembley, Middlesex . HA9 OHB England Tel : (020) 8900 2329 Email : [email protected] Fax: (020) 8903 6126 Website : http://www.grandata.co.uk Samsung CI5373 (SCT11B head drum won't rotate or is very stiff. The chassis) cure is to remove the drum from the deck, This set was tripping. On investigation I separate the lower and upper sections found that the line output transformer was (Philips provide a tool for this, but it's arcing. The customer agreed to my esti- expensive), strip down the lower drum and mate for fitting a replacement but, when clean out the dried -out lubricant. this had been done, I was rewarded with Relubricate and reassemble the lower drum, field collapse. After much discussion with making sure that the shaft can turn freely. the customer I was given permission to Next refit the upper drum to the lower proceed. The cause of this second fault drum, using the mica washers that are sup- turned out to be the VPG101 hybrid IC plied with a new head. Make sure that HIC301, which is between the jungle IC everything is positioned as it would be if and the field timebase IC. This is a difficultyou were replacing the drum. Finally refit situation, since the arcing could have dam- the drum to the deck, reassemble and test. aged other components. You might wonder what HIC301 does. Mitsubishi CT32BW1B It appears to be there because of the This monster is certainly very complicated. designer's choice of jungle and field time - It looked quite awesome when I got the base ICs. The Mitsubishi M52309SP jungle back off. The set was dead, with 330V chip (IF/colour decoder/timebase genera- across the mains bridge rectifier's reservoir tor) IC201 contains a field ramp generator. capacitor. I didn't have the circuit diagram The TA8445K timebase chip IC301 also and was unable to get one, so I decided to contains a ramp generator, and requires a carry out a blanket job on the power sup- trigger input at pin 2. The latter is derived ply. I replaced the STRM6529 chopper from IC201's sawtooth output by HC301, chip, an 0.2252 resistor that according to which contains just two transistors and a Euras can go slightly high in value, and the handful of passive components. circuit protectors on the secondary side of the power supply. Akai CT2870 When I switched on I was rewarded There was very poor and noisy sound whenwith the standby light, then the on light, this set was first switched on. I decided thatfollowed by EHT then a blue screen with a replacing the electrolytic capacitors in the four-letter word in the top left-hand corner. tuner/IF module would be a good start. The latter changes when you bring up the Fortunately this cured the fault. tuning menu. Another repair completed in the customer's home! Sony KVDX271TU (AE1 chassis) This set would start up with a slight burst Akai P/2835 of EHT then shut down. Whenever I get This budget set uses the same chassis as one of these sets I always check for dry - some Schneider models. The fault was no joints and replace C615 (1,000g, 35V), sound. Unfortunately the customer was the reservoir capacitor in the 15.5V rectifi- hard of hearing: he had set the default vol- er circuit on the secondary side of the ume level to maximum and blown both chopper power supply. I noticed that the loudspeakers! LA4280 audio output chip IC251 was dry - As parts for this set are impossible to jointed and attended to this as well. But the obtain, I had to try to find an alternative fault was still present. So I removed IC251 repair method. I found that the speakers and found that it had a crack in it. The set and mountings from a scrap Sharp CS set worked normally once a replacement had fitted and restored the sound. Not quite been fitted. I gave it a soak test and how the manufacturer intended, but it did returned it to the customer. make the old boy very happy. So happy A few hours later he phoned to say it that he gave me a bottle of his best port! had failed again. When I went round to take another look the truth emerged. He Philips GR2.4 chassis had connected the TV speakers to a hi-fi I have had this fault on several occasions system, which had blown the new LA4280 now. The set trips and it looks like line out- chip and also damaged several components put transformer failure. In fact you will in the muting circuit. The set worked well find that the fusible resistor R3588 is open - once these items had been replaced. I circuit. A replacement will restore normal warned the customer never to connect any operation, but only for a short period of other equipment to the speaker terminals. time. Always replace the line scan coupling capacitor C2549. Even if it looks OK, it Philips VR260 (Turbo deck) will almost certainly be burning up inside. This situation can occur with any VCR The value is usually 680nF, 250V but can

that's fitted with the Philips Turbo deck: the vary with tube type.

June 2003 TELEVISION 469 Practical PAT testing This concluding instalment provides details of a PAT tester that can be made for about £50. Circuit, construction and set-up information is included, along with instructions for its use. Text and design by Ian Rees.

In Part 1 last month I provided a 6V AC output from mains R1, with D2 and D3 to provide a practical guide to PAT (portable transformer T1 via the 25A stabilised 1.2V output. R2, R3 and appliance testing) test moving -iron meter M1 to the probe, RV1 set the full-scale deflection of requirements and procedures. This which is connected to test socket M2 when switch S2 is set to concluding instalment describes a Sktl . The meter indicates directly position 3 (TT) and S1 is pressed. tester I designed and built for the the earth -bond current that flows M2 is calibrated to show the 0.152 purpose, and have used for some when S1 is pressed. Resistance RL limit. time on a regular basis. Its limits the maximum current to 25A: To obtain the supply required for specification was listed at the end of it's in fact the probe lead, which is insulation tests transformer T2, Part 1. Photo 1 shows the unit. cut to a suitable length (see setting - another standard mains transformer, up procedure). is connected back-to-back with T1. Circuit description A less stringent method is used for The step-up winding on its Fig. 4 shows the tester's circuitry. IT equipment etc. that's likely to be secondary side feeds a voltage - The unit is mains -operated, and is damaged by the above procedure. doubler circuit that consists of C2, switched on for the required five - When the probe is connected to test D9, DIO and C3. R5 is included to second test by the momentary -make socket Skt2, the earth bond is in discharge the high voltage. A press -button switch Si. parallel with R3. The supply stabilised 500V supply is obtained Class 1 equipment earth -bonding required by the fall -back ohmmeter by feeding the voltage-doubler's tests are carried out by applying the circuit is provided by D I, Cl and output via R6 to the five 100V

M1 Sidi RL Probe

C2 D10 T1 T2 R6

D4 D1 41 ID9 T C30 R50 D5

D6

D7

D8

ct 1:11-

S2 1 Insulation testO 2 Continuity testO R7 3 IT earth -bonding test D11

,eRV2

F1

S2a M2 S1 S2c p3

10 Skt2 S2b 01 Fig. 4: Circuit N B1 R4 o 2 II -11-Wi diagram of the 03 PATtester. 13A test socket

L N E Mains supply

470 June 2003 TELEVISION zener diodes D4 -D8. Without the (0.1Q, 0.3352 and 0.5Q) is screwed diodes, the tester's off-load output to the back of the plug (see Photo voltage would rise to about 700V. 3): the test probe is applied to the Meter M2 is calibrated to show the free end of each resistor in turn to leakage current (resistance) when check the meter readings. function switch S2 is in position 1. R7 and RV2 set M2's full-scale Setting up Fig. 5: The calibration deflection for this test. Dl l limits Setting up the tester is plug arrangement. the current flow via the meter to straightforward. prevent the needle slamming over when the probe is short-circuited. 500V insulation: Insert the test The continuity test is carried out plug and set S2 to position 1. Press when S2 is in position 2. A PP3 9V test switch S1 and adjust RV2 for a battery with series resistor R4 reading of 90/tA on M2. supply a test voltage, which is read by the meter, across the live and IT earth -bonding: Remove the test neutral pins of the 13A test socket. plug and set S2 to position 3. Press test switch S1 and adjust RV1 for a Construction full-scale reading on M2. Reinsert The unit is built with non -critical the test plug. Connect the probe to components that are readily the IT socket Skt2 and note the available. In the prototype the meter readings (datums) when each mains transformer T1 is a 240V/6V of the calibration resistors is 20VA type that works well. T2 has touched. Photo 1: The prototype PAT tester. to be able to provide sufficient output to power the voltage doubler Class 1 earth -bonding: No on load. It can be a smaller VA calibration is required, because transformer. The input voltage must ammeter M1 provides a direct be similar to, or a little below, Tl's current reading. The length of the output voltage. probe's test lead has an effect A good-tftmlity mains socket is however. With the 6.V, 20VA required for the tester, without a transformer (T1) in use a 2m length switch or neon indicator. This will of 2mm stranded cable should, ensure that the continual plugging when connected directly to the earth and unplugging of test leads won't pin of the test socket, produce a wear it out quickly. full-scale 25A reading (M1). Adjust Press -button switch S1 is of the the length of the test lead if the momentary -make mains type. reading is more or less than this. Function switch S2 is mounted with Photo 2: The calibration (test) plug. the continuity position 2 central. Using the tester This is the first and last test that's The tester is very simple to use. It carried out. On either side are the has to be connected to the mains insulation (1) and IT earth -bond (3) supply. Let's assume that an electric tests. kettle is to be tested. As this is a The wires that connect ammeter class 1 device, the probe should be M1 to test socket Sktl and T1 inserted in test socket Sktl. Set the should be of 2.5mm diameter. The function switch S2 to position 2 wire from T1 to the earth pin of the (central, continuity) and plug the 13A test socket should be of the kettle into the 13A test socket. If the same diameter, to prevent voltage kettle has a switch, select its on drop and overheating. Both probe position. M2 should deflect to show test sockets, Sktl and Skt2, should continuity via the plug fuse, switch be of a good -quality 4mm type. and element. Next, carry out the earth -bonding Calibration plug test. Connect the probe to the body Calibration can be a problem with of the kettle or the internal exposed element then press and hold test home -built test equipment. In this Photo 3: The 15W wirewound resistors at the rear of the case the problem is solved by switch Si for five seconds. calibration plug, mounted on their heatsink. having a calibration plug, see Fig. 5 Anuneter MI will deflect, showing and Photo 2, that's used to set up, the current that flows via the maintain and confirm the unit's earthing lead to the kettle's exposed of the kettle. performance. To check insulation a conductive parts. It's important to Finally, set the function switch S2 500kS2 resistor is connected get a good connection to the metal, to position 1 (insulation). Press test between the earth and neutral pins. bearing in mind the possibility of a switch Si again. M2 will deflect, To confirm continuity a 1k5.2 flash burn on the surface where the showing the leakage resistance. resistor is connected between the connection is made. The current This can be compared with the live and neutral pins. To check measured should be more than F5-2datums set by the test plug. earth -bonding datums a small times the correct fuse rating in the As another example, consider the aluminium heatsink that carries plug to a maximum of 25A. tests for a double -insulated class 2 three low -value wirewound resistorsDisconnect the probe from the body drill gun. Set function switch S2 to

TELEVISION June 2003 471 Components list adapters are boldly marked not to be used for other than the test R1 25Q, 1W purpose for which they were R2 1052, 0.5W designed, and keep them in a safe R3 1Q, 0.5W place. R4 100kQ, 0.25W R5 4.7MQ, 0.5W Conclusion R6 47kQ, 0.5W This article has been by no means R7 3.3kQ, 0.5W exhaustive. It has covered only a All 5% carbon small portion of the overall subject RL Resistance of test lead (see text. of safety testing, which includes mechanical, chemical and RV1 100Q, 0.5W, single -turn cermet (RE01875)* radiological requirements etc. RV2 2k52, 0.5W, single -turn cermet (RE01880)* Regulations tend to be varied, and vigilance is needed to ensure that C1 470pF, 16V new requirements and guidance C2, 3 0.22pF, 600V issued by the HSA and others is followed. D1-3, D9-11 BY133 A visit to the HSA website will D4-8 1N5378BRL, 100V 5W ISC1N5378BRL)* reveal a large number of books, leaflets and information that canbe T1 240V/6V, 20VA (TF00075)* ordered or downloaded (some are

T2 240V/6V, 6VA (TF00065)* free). 6V windings wired in parallel in both cases

M1 25A moving -iron meter (PM11008)* M2 100pA moving -coil meter (PM11199)* Make sure of your F1 1A quick -blow copy of Television S1 Momentary PB 2 -pole, N/O, 3A, 240V AC switch (SW01147)* S2 Rotary 4 -pole 3 -way (set for 3 -way) switch (AR70745)* It can be difficult finding a B1 9V PP3 battery copyof Television at local Skt1, 2 Good -quality 4mm test sockets newsagents. The number of Mains socket magazines being published Calibration plug keeps increasing, which means that newsagents R1 500kQ, 0.25Q (470kQ + 30kQ, 1% in series) have less shelf space for the R2 1kQ, 0.25Q, 5%. display of individual titles. R3 0.104 (RE01648)* Specialist magazines in R4 0.33Q (RE01651)* particular get crowded out. R5 0.50Q (RE01653)* R3-5 15W ww 5%. Welwyn aluminium -clad, heatsink-mounted There's a solution to the problem. Most newsagents * CPC catalogue numbers provide "shop -save" and/or home -delivery services. position 2 (continuity) and plug the that will help with the mind -boring There's no charge for a shop drill gun into the 13A testsocket. grind is welcome. save. You simply ask your Then set S2 to position 1. With the Whatever type of test equipment newsagent to order a copy trigger locked 'on', meter M2 you use can benefit from made-up for you: it will be kept on should deflect. Press test switch SI adapters. These simplify connection one side each month ready and touch the probe to all exposed to 110/240/415V two- and three- for you to collect. Home - conductive surfaces, i.e. chuck, phase industrial connectors etc. delivered copies are ordered exposed fixing screws, etc. Note Extension leads are particularly in the same way, but any readings produced by M2 for tedious to test, as are IEE leads correctness. used with IT equipment. All these generally incur a delivery Class 1 IT equipment is checked tests can be speeded up by the use charge. with the test probe inserted in Skt 2. of adapter plugs and sockets that A newsagent can order any Follow the same procedure for the are wired for connection to your magazine for you, whether continuity and insulation tests. For test equipment. Linking together or not the shop normally earth bonding, set switch S2 to the pins of a clumsy, heavy three- stocks it. position 3. Press test switch S1 and phase plug/armoured lead using If you buy your copies of use meter M2 for measurement. crocodile -clip jumpers and then Television from a Compare with the calibration set by trying to apply a test can be fraught newsagent and want to the test socket. with frustrations. make sure you get every The only concern I have about Accessories making up adapters is that issue, just ask at the When you've carried out dozens of inappropriate plugs and sockets are counter. tests, with documentation, anything wired together. Ensure that all

472 June 2003 TELEVISION Export Enquiry Only Genuine Returns Tv's ,Vcr's ,Dvd's ,Audio, Small Appliances Iron's,Toasters Etc Container load Available!! LARGE QUANTITY!! Also Available for UK Market Products from SONY HITACHI TOSHIBA PANASONIC DAEWOO BEKO SVA MORPHY RICHARDS PHILIPS KINGAVON & TRADEX Call- 07836 520036

Al PRICES ARE SUBJECT TO VAT,CARRIAGE AND AVAILABIIITY.PRICESSUBJECT TO CHANGE WITHOUT PRIOR NOTICE!

Tv's Vcr's Dvd's Audio2°5DIGITALMC,il HITACHI VTFX240EUK HITACHI HTDA150 TradeX TX121CDB E 8Beko 14" Remote Tv From 04 gg s NIcam ANFIISHREO TUNS 0 . --..---- ,4 Video plus DVD THEATER SYSTEM 10P LOADING PROGRAMMABLE MUM @ ,.13) Beko 140 Text Tv From£39.gg , L. uu -, Movie text DVD Player with Built In Reale* ..., Ls>/sp LSCODP EJECTCASSETTED0011 Playback on DYE/I/CD/CD AUTO STOP CASSETTEIE0101610 @ Beko 28" 4;3 Text Tv From £99,99 6 Head Ability to Read MP3 CD-R/CD4N1 ONE TOUCH RECORDING AMYX HCNIDING LEVEL CONTROL DTS Dolby Digital WPM Id STEREO HEADPHONE JACK ABeko 28' Wide Text Tv From 025.00 E44.99 Silver 5 Speaker Surround Systern ACIDC OPEXATIN b Auxiliary Inputs SMishly designed USE PCS UM SOS BATTERS [E] HITACHI VTMX210EUK (BATTERIES k0111CLUDEDI 6Daewoo 14' TvIlfcr Combi From £69.99 Satellite and Centre Speaken Sleep , / Tape Navigation £139,99 Tuner Full Remote Contra Basic Dvd From £49,99 - i,, ,Commercialadvance Muttiregiont Movie text Basic Vcr From £24.99 _...,Nstcplayback DVP325EUK -/ 7 mono silver Technics B C28W540N £34.99_ ellinng 66cmV Screen (28" tube) Cv810 Bagless SINIDV600 Nicam Digital Sound Plays DVD. UDR. CD, CD -R. 10 page text I CD-RW discs 2x 12w RMS Compatible playback of MN audio lifood Grain Speaker System 8 2 Scan sockets CylinderCleaners file on CD Hitachi on screen display enables accurate reading of disc El Pure Flat Tube formats Dolby Digital Sound Set of 1 / Nicam Stereo Controls DVD and other Rand Tan 8 ,,-'.---r; £17.99 13 .,,/ 0 £249.99 £79.99 ,:,,..,,/ Only £19.99 9 ",r- INTERCOM CAMERA , ,,,,,' SB-PT96 SATELLITE NNE252W E. X 4, Panasonic Q)it,,,4 SPEAKER SYSTEM C g- SYSTEM -....r COMPACT MICROWAVE 8- in SET OF 3 Auto Weight Cook Bell camera and full Accessories included *I i Auto Weight Reheat Additional camera sold separate 0 s-. litChniCS. AutoChild = Infra Red Camera for Night vision Lock 99W. Built in Mic for sound 1110 Touch Button optional electric door latch 800W (I.E.C.) AlB switch 9litrWee:gail::etfryost tEBrand New!: BrandNew! Alcrylie Lining Two Way speech 1111 III 1111 6 Power Levels £39 250 metre cable 12hr Timer gE 'High quality Video Onl £9 50 £39 99 2 Stage Memory

S .ew,0/34 River street tligheth Wham B5 5SA TeI:0121 773 3300 Fax0121 773 2300

TELEVISION June 2003 473 TELEVISION BOOKS VCR FAULT FINDING AND HOME ELECTRONICS REPAIR GUIDE Edit. Peter Marlow The Television Book Service offers access to our team of specialist A distillation of the publishing experts. We can order any book or CD-ROM currently in print most -used fault reports from 11 years from War And Peace to the Newnes Guide to Television and Video of Television Technology. All books are delivered free of charge within the UK unless magazine. Arranged by make and model, it otherwise stated. Contact us at the numbers below: features over 2000 Telephone: 01737 812727 or 01737 812676 reports on over 200 models of VCR, Fax: 01737 813526 Email: [email protected]. co.uk including diagnosis and repair advice.

If you are ordering by credit card, need further information, or would like to use our search facilities call 01737 812727 Fax 01737 813526 The order/helpline is open from 9am to 5pm, or leave your order on our out of hours answerline or email us at [email protected]. When placing orders please quote Name Address (home & delivery) Daytime telephone number Debit/Credit card inqMar 2000 447 pages PB number Expiry date Details of order. Please note that prices may change, but are correct at time of going to press. Boffin Books Ltd., 24 Walton Street, Walton -on -the -Hill, Tadworth, Surrey KT20 7RT Code: BUTO-7506-4634-9 £23.50

VIDEO AND SERVICING TV, NEWNES GUIDE TO CAMCORDER SATELLITE AND TELEVISION AND SERVICING AND VIDEO EQUIPMENT VIDEO TECHNOLOGY Eugene Trundle. Rev. 2nd Edition TECHNOLOGY Steve Beeching 5th ed A practical hands-on Eugene Trundle. 3rd ed guide for service A comprehensive engineers, installation An exploration of guide to domestic VCR technicians and television and video technology and repair servicing students, this technology. It covers techniques. This Newnes quid, io text emphasizes the the fundamentals of edition brings the digital television Television practical business of information fully -up- (satellite, cable and & Video fault diagnosis and Technology to-date, with repair of TV, satellite terrestrial) and digital expanded coverage of and video equipment. video, as well as camcorders, sections on DVD providing a grounding in analogue equipment and the latest VCR systems. technology. Apr 2001 323 pages PB Nov 2001 336 pages PB Feb 2001 432 pages PB

Code: BUT 0-7506-5039-7 £23.50 Code: BUT 0-7506-5507-0 £24.50 Code: BUT 0-7506-4810-4 £17.99

NEWNES GUIDE TO TV FAULT FINDING DIGITAL SATELLITE DIGITAL TELEVISION GUIDE TV HANDBOOK Richard Brice.2nd ed Edited by Peter Marlow Mark E. Long Covering all aspects of digital television, A distillation of the most -used fault A handbook and CD-ROM pack on this text encompasses reports from 11 years digital satellite

the electronics of the of Television magazine. television. It provides the Digital Satellite equipment, data Arranged by make and an overview of all the TV Ilandbooli compression, model, it features over digital TV platforms in television production, 200 reports on over use world-wide. It servicing and the 300 models of includes satellite different transition television, including coverage maps and methods - terrestrial, diagnosis and repair transmission satellite and cable. The advice. parameters that text has been updated readers will need to with developments since the 2000 receive digital TV services from any edition. location in the world.

Sep 2002 304 pages HB Q Mar 2000 387 pages PB pigSept 1999 207 pages PB CD-ROM

Code BUT 0-7506-5721-9 £24.99 (ode: BUT 0-7506-4633-0 £23.50 (ode: BUT 0-7506-7171-8 £41.99 DICTIONARY OF VIDEO DEMYSTIFIED NEWNES VIDEO AND Keith Jack. 3rd ed TELEVISION AND This edition has been VIDEO ENGINEER'S TELEVISION updated to include TECHNOLOGY information on digital POCKET television, datacasting, Jack Tsatsoulin P'srtk interactive video, BOOK This work provides digital camcorders and Eugene Trundle. 3rd ed comprehensive and VCRs, and video This updated text contemporary interfacing. Coverage provides a pocket tool information on the is international, for service engineers. It essential concepts and including European, presents a range of terms in video and Asian, and North/South essential information in television, including American video standards, a compact form, covering television coverage of test and methods, and techniques. reception, satellite and cable measurement proceedures. The CD television, video recorders, colour accompanying the text includes and camera technology, teletext and fault- electronic version of the book. finding. El Dec 2002 365 pages CD-ROM 111 Jul 2001 784 pages PB CD-ROM Oct 1999 51 2 pages HB

Code: BUT 1-878707-99-X £29.99 Code: BUT1-878707-56-6 £50.00 (ode: BUT 0-7506-4194-0 £17.99

TELEVISION: AN FUNDAMENTALS OF STANDARD HANDBOOK OF INTERNATIONAL DIGITAL TELEVISION VIDEO AND TELEVISION HISTORY OF THE TRANSMISSION ENGINEERING FORMATIVE YEARS Gerald W. Collins Jerry Whitaker; Blair Benson R.W. Burns The switch from As the television analogue to digital engineering field is This concise history of broadcast systems is a rocked by digital television from its hot topic in broadcast technologies and FCC Video and conception to the engineering as the mandates, this Television 1940s considers the technology rapidly handbook has been Engineering factors - technical, evolves. This text revised and updated. social and financial - discusses both It features 70 per cent that influenced and led American ATSC and European DVT-T new material, to the establishment of systems, and collates the latest research including a section on digital television, many of the world's high -definition previously scattered throughout various and comes with a CD-ROM containing broadcasting services. journals. standards, archived texts and software. 3rd ed Mar 2000 1111111 656 pages HB La Dec 2000 288 pages HB La 140 pages HB & CD-ROM

Code: IEE 0-85296-914-7 £39.00 Code: WILO-471-39199-9 15450 Code: MCGO-07-069627-6 £91.99 TELEVISION ORDER FORM Tel: 01737 812727 Fax: 01737 813526

Please order following: Qty Name Daytime Tel

BUT0750646349 VCR Fault Finding Guide £23.50 Address BUT0750650397 Video & Camcorder Servicing Technology £23.50 Postcode BUT0750655070 Servicing TV, Satellite & Video Equip £24.50 Delivery address (if different) BUT07506481 04 Newnes Guide to TV & Video Technology £17.99 El Postcode

BUT075065121 9 Newnes Guide to Digital Television £24.99 POSTAGE & PACKING FREE IN THE UK* BUT0750646330 TV Fault Finding Guide £23.50 I enclose a cheque/postal order value £ payable to 'Boffin Books Ltd' BUT0750671 71 8 Digital Satellite TV Handbook £41.99 Please debit my Access/Visa/Switch/Delta card Issue number (Switch only) BUT1 87870799x Dictionary of Video & TV Technology £29.99

Mo. irappkobla BUT1 878707566 Video Demystified Guide £50.00 Card Number Expiry Date ... . BUT0750641 940 Newnes TV & Video Engineer's Pocket Book £17.99 Signed email:salesteam©boffinbooks.demon ca.uk

1E00852969147 1V: An Int History of the Foondive Years £39.00 Postage charges outside the UK available upon request or email to [email protected]

WIL0471391999 Digital Television £54.50 Post to: Boffin Books Ltd., 24 Walton Street, Walton -on -the -Hill, MCG0070696276 Standard Ficodbk ofIlideo and Pi Engineering £91.99 Tadworth, Surrey KT20 7RT, UK Test report: Jeff Scoins finds the ideal universal remote -control unit in the Sony range Sony RIMIL/OOT universal RC unit

Universal remote -control units other equipment of other brands the codes for different devices. are usually big, unsightly unit would be ideal. Sony claims The unit also learns. If a piece of beasts or tiny with hardly that the unit has five hundred equipment isn't listed, you can any buttons. Not this one! It sits in different codes. There's also an teach the RM-VL700T from the your hand nicely, is neither too option to search/step through the remote -control unit that goes with heavy nor too light (105g), and has it. This is very straightforward. more than enough features for most When I set up the unit at home I people. found that it wouldn't, with the The buttons are very well laid out code number supplied, work my (see photo). Programme and Panasonic digibox. So I taught it volume up/down are at the bottom, from my Sky handset. Less than with the cursor keys just above. At two minutes were required to teach the top there are five device -select it all the buttons. buttons, which light up, and a One feature that's not provided is standby button. The select buttons a button that can carry out several are for TV, VCR, cable/sat, DVD commands at one press, e.g. turn on and amplifier. Below this are the the TV set, DVD player and text, AV, numeric buttons (also amplifier and switch the amplifier labelled with the different AV to DVD - you get the idea. This can sources for when controlling an be done with the RM-AV2100T amplifier) and the Fastext/VCR (see below), which allows up to keys. There are also menu, OK and sixteen steps to be programmed on guide buttons - ideal for IDTV and to each of three buttons. There's a many modern TV sets, and for way round this with the 700 digiboxes. When you press any however: you can choose any button the corresponding device - button (preferably one you are select button lights up, so you can unlikely to need to use) and teach it see which item you are controlling. a series of different commands. Although this can be done, it isn't Programming and easy. Each command must follow learning immediately after the last or the unit Like many universal models, this stops learning. I've managed two remote -control unit can be commands fairly easily, but no programmed using code numbers. doubt practice makes perfect. An extensive list is provided, with As the unit can learn, it can be codes for mini hi-fi systems, taught commands for other separates, DVD players, products, e.g. air conditioning units, analogue/digital satellite receivers, motorised curtains, lighting control analogue/digital cable, VCRs and of etc. But I suggest caution here. In course TV sets. Over 89 different the wrong hands even curtains brands are listed for TV alone. Yes, could be dangerous! The unit has a this does include Bang & Olufsen - handy child -lock feature however. which works! Obviously customers The manual says "some specific who have all-B&O equipment The Sony RM-VL700T pro- remote -control signals may not be wouldn't require this handset, but ifgrammable, learning universal learned", but it doesn't say which a customer had a B&O TV and remote -control unit. ones.

476 June 2003 TELEVISION Verdict device you want to control, which is This is a great little remote -control indicated in the display. The unit. It's easy on the hand, the eye devices can be renamed in the and the pocket. It's also very easy display, using anything up to six to program and even easier to use. I characters, and the display can be would have no hesitation about set to go off at any time between ten recommending it to friends and and 240 seconds. Predicted battery customers. I've seen it on sale for as life is about three months. little as £40, which is an absolute This unit costs quite a lot more bargain. than the 700, at about £90. It looks The unit uses two LEDs and has a great, with its Alumite finish, and as range of 10m. It takes two 2AA with the 700 is very easy to use. It's batteries, with a battery life of aboutrather heavy however, being almost six months depending on use. An twice the weight of the 700. It also NV memory is incorporated, so no feels awkward to use. With the reprogramming is required should numbered buttons being so far away the batteries go flat and you can't from the volume control, you find get another pair until after the bank yourself moving the unit up and holiday! down in your hand - or even using two hands. Other Sony learning RC The RM-AV2100T is square units instead of the usual long, thin shape The Sony range has other learning we are used to. It has a touch -screen remote -control units, including the LCD with a blue back light. Up to The Sony RM-VZ950T "Art RM-VZ950T and the RM- twelve devices can be controlled, Couture" remote -control unit. AV2100T. with up to sixteen steps being The RM-VZ950T has the same possible via one of the three very reasonable in comparison with features as the RM-VL700T but can system -control buttons. other models on the market. As control up to eight devices and has The 2100 is more for the AV I've not had the opportunity to try a Sony jog dial with a display. The enthusiast, its price (£.135) one of these units I can't say more jog dial is used for selecting the reflecting this. But the price is still about it.

Farmell DTV 12-14 OSCILLOSCOPE H.P. 60638 DC Electronic Load 3-2406/0-10A 250W SPECIAL OFFERS JUST IN P.O.A. Dual Trace 12 MHZ TV. Coupling ONLY £75 H.P. 8640A SIGNAL GENERATOR AM/FM £250 H.P. 663I2A PSU 0 - 20V/0 -2A £400 500KHZ-512MHZ. FARNELL LFI Sine/Sq OSCILLATOR H.P. 66311B PSU 0 - 15V/0 -3A £400 KENWOOD CS4025 Oscilloscope Dual Trace 20MHZ H.P. 66309D PSU Dual 0 - 15V 0 -3A/0 -12V 0-1.5A £750 £125 10HZ- 1 MHZ ONLY £75 H.P. 6632B PSU 0 - 20V/0 -5A LEADER LB0523 OscilloscopeDual Trace 35MHZ H.P. 6623A PSU Triple Output ranging from £850 OSCILLOSCOPES £140 0-7V 0-5A to 0-20V 0-4A GOULD 05300 Oscilloscope Dual Trace 20MHZ £95 TEKTRONIX TDS350 Dual Trace 200MHz 1G/S H.P./Agilent 34401A DMM 61/2 digit £400/£450 TEKTRONIX 2445A 4 Ch ONLY NATIONAL PANASONIC VP7705A Distortion Analyser unused £1500 H.P. 3478A DMM 51/2 digit £275 TEKTRONIX TDS320 Dual Trace 100MHz 500M/S £1200 150MHz Delay, Cursors etc. £125 FLUKE 45 DMM Dual Display £400 Supplied with 2 Tektronix probes TEKTRONIX TDS310 Dual Trace 50MHz 200M/S £950

TELEVISION June2003 477 All about low -drop linear regulators If you are not careful you can get instability problems with low -droplinear voltage regulators. The reasons for this lie in the frequency and phase characteristics of the feedback loop in the regulator and the characteristics ofthe output capacitor used. Ray Porter, M.Sc., C.Eng., MIEE,explains the theory and describes the practical points to observe

In the January and March issues of Television automatically adjusted by the negative feedback loop, Michael Dranfield described an intermittent picture - which consists of an error amplifier and the series freezing fault with the Amstrad DRX100 digibox, power element. The error amplifier has two inputs, V1 the cause being a 3.3V supply regulator which is obtained from a potential divider across the oscillating. This prompted me to prepare the present output, and a reference voltage: in operation the circuit article, which explains how low -drop regulators differ reduces the difference between these two inputs to from conventional linear regulators and why the almost zero. characteristics of the capacitor across the output are With integrated -circuit regulator designs the output critical in ensuring that oscillation doesn't occur. As current is limited by a current sensing and/or thermal - you will see, changes to the regulator or output limiting shutdown circuit. This has been omitted in Fig. capacitor type to 'improve' the situation may result in a 1 in the interests of clarity. job that bounces at a later date. Another source of power dissipation in an IC linear voltage regulator is the current that flows via the Basic linear regulator arrangement chassis -connection pin. Part of this is the series power Fig. 1 shows the basic linear voltage regulator element's base current. In battery -powered devices this arrangement for a positive voltage output. All linear current is a significant waste of energy when the circuit regulators use this arrangement, but the series power is delivering maximum load current. element configuration varies, as shown in Fig. 2. The series power element drops the input voltage to the Types of linear regulator required output voltage by dissipating power equal to Fig. 2(a) shows the series power element in an `npn the input -to -output voltage difference multiplied by the regulator'. This is the traditional linear -regulator circuit. load current. To provide regulation, its base drive is The series power element consists of a Darlington npn pair, Trl and Tr2, and a pnp driver transistor, Tr3. The dropout voltage is the minimum voltage that must

Series power0 be present between the input and the output to ensure element that the regulator operates. With this design, operation is limited by the reduced gain of the pnp transistor as it approaches saturation. The dropout voltage Vdmin is given by

Vdmin = Vcesat + Vbetrl + Vbetr2 load where Vcesat is the saturation voltage of Tr 1 , and Vbetrl/2 are the base -emitter voltages of Tr 1 and Tr2. For a 7812 regulator the dropout voltage is typically 2V. Fig. 2(b) shows the series power element in a low - Fig. 1: Basic linear voltage regulator arrangement. dropout regulator (an alternative name used by some manufacturers is 'quasi low -dropout regulator'). In this

478 June 2003 TELEVISION case there's a single npn series dropper transistor with a pnp driver. One use of this type of regulator is to provide 5V -to -3.3V conversion in systems that use 5V and 3.3V supplies. Tr1 Tr1 Tr1 With this arrangement the dropout voltage is given by Tr2 Driver Vdmin = Vcesat + Vbetrl.

Tr3 Driver With an LM1117 or MC33269 regulator the voltage is typically 1.2V. Fig. 2(c) shows the series power element in a very 3 3 3 low -dropout regulator. It consists of a single pnp (a) (b) (c) transistor with no separate driver. The dropout voltage is equal to Vcesat, and is typically 0.32V with an Fig. 2: Series power element configurations. (a) NPN regulator. (b) LM2930 regulator. Low -drop regulator. (c) Very low -drop regulator. Cause of instability The feedback loop that controls the output voltage, using a fixed reference voltage, must have an open -loop gain of less than one at all frequencies where the total phase shift around the loop is 360°. Otherwise the loop will oscillate. There's a phase shift of 180° in the error amplifier arrangement, because it's an inverter. Thus to ensure stability the total additional phase shift in the error amplifier and the series power element must, at all frequencies where their combined gain is more than one, be less than 180°. Caused by series power element The error amplifier has typical frequency -response (emitter -follower) break-points, set by the integrated -circuit designer, at 100Hz for the npn-type regulator and 1kHz for the very low -dropout type regulator with a single pnp series power element. This introduces a 45° phase lag at 180 100Hz and 1kHz respectively, increasing to 90° at Phase 1kHz and 10kHz respectively. If the series power shift (°) 270 element introduces a 90° phase lag, the regulator will -360 oscillate when there is sufficient (i.e. 0dB) open -loop 10 100 1k 10k 100k 1M 10M gain. Frequency (Hz) For the reasons described below, the frequency response of an npn-type and a very low -dropout pnp- Fig. 3: Bode plot for an npn-type regulator. type series power element differs significantly. This is what makes the very low -dropout type sensitive to the characteristics of the output capacitor. Caused by R and C Frequency and phase characteristics of Caused by error amp series power elements 80 NPN Darlington type: In this configuration the series power element is connected as an emitter -follower, with 60 the output load as the emitter resistor and the output capacitor in parallel with it. An emitter -follower has a 40 good HF response because its output impedance is low. Loop So at HF the phase shift is also low. In practice this gain 20 means that a break-point with a 45° phase lag occurs at (dB) above 1MHz. Fig. 3 shows a Bode plot for a typical Caused by pnp Darlington npn-type regulator. There is no condition transistor and its where the phase and gain meet the requirements for 20 driver oscillation: the regulator is stable. -40 PNP-type: In this configuration the series power element is connected as a grounded -emitter stage. The output load is its collector resistor and the output capacitor is in parallel with this. The frequency 180 response of a grounded -emitter stage is set by the time - Phase constant of the collector load resistor and whatever shift (°)-270 capacitance is in parallel with it. So the load capacitor -360 affects the frequency at which the phase shift reaches 10 100 1k 10k 100k 1M 10M 45°. For example this frequency is 160Hz with a 5V, Frequency (Hz) 50mA regulator and a 10pF output capacitor: at 1.6kHz the phase shift becomes 90°. This condition can cause Fig. 4: Bode plot for a very low -drop regulator with no compensation. oscillation, as the Bode plot in Fig. 4 shows. At 10kHz

TELEVISION June 2003 479 the total phase shift is 360° and the gain is 20dB. Caused by R and Cow Low -dropout npn type: The HF response of the Caused by error amp emitter -follower stage is not as good as that with the Darlington configuration, as the output impedance is 80 Caused by ESR higher. The output impedance is calculated as the base circuit input resistance divided by the overall gain. There's a 90° phase shift at a frequency at which the

Loop 40 overall gain is more than OdB, and the circuit is gain unstable. (dB) Caused by pnp 20111111111PIMINtransistor and its driver Compensation for stability IMMIrd11111/ Fortunately for low -dropout regulators, all capacitors have an inherent equivalent series resistance (ESR) - -20NUMMI= the characteristic that's so often mentioned in these pages as being the cause of faults. In this application -180 Without ESR however a suitable ESR value ensures stability by Phase shift (°)-270 introducing a phase lead in the output circuit, at a With ESR frequency fesr given by -360 10 100 1k 10k 100k 1M 10M Frequency (Hz) fesr = 1/(2.7t x Cout x ESR).

Fig. 5: Bode plot showing how output capacitor ESR stabilises a The Bode plot in Fig. 5 shows that with Cout 10µF very low -drop regulator. and the ESR 10, fesr is 16kHz. Effect of high ESR Caused by Rioad and Co Caused by high ESR If the output capacitor has an ESR of 200, fesr Caused by error amp becomes 800Hz and the result is instability. Fig. 6 shows the theoretical plot, with the phase shift at 1MHz 80 slightly less than 360°. But in practice there are other

WerammimCaused by pnp phase lags in an integrated circuit at HF, so stability transistor and its cannot be guaranteed. Loop 40mmazumm driver gain (dB) Effect of low ESR 20imminms If the output capacitor has an ESR of 50mQ, fesr becomes 320kHz and the result is instability. The Bode 1111111111M plot in Fig. 7 shows that the phase shift is 360° even at

-20 10kHz. The phase lead introduced by the ESR is now at too high a frequency to assist stabilisation. 180 Fig. 6: Bode Phase plot showing Conclusion shift (0)-270 how high ESR causes The conclusion, and warning, to be drawn from this is -360 that shunting a high-ESR capacitor with a very low 10 100 1k 10k 100k 1M iom instability. Frequency (Hz) ESR type can cause instability with a low -drop linear voltage regulator circuit. There are however regulators, for example the LP2985and LP2989, that are designed to work with Caused by R and Cout low-ESR capacitors such as ceramic types, which Caused by error amp Fig. 7: Bode plot typically have an ESR of 5-10m52. These regulators showing how have additional compensation built into their internal 80 low ESR causes feedback networks. instability. MC33269 v LM1117

40 Manufacturers' data for the range of acceptable output Loop Caused by low ESR capacitor parameters for these devices are shown in gain 20 Table 1. They bear out Michael Dranfield's suspicion (dB) that the LM1117 is more tolerant of high ESR. Caused by pnp Fortunately practice agrees with theory for once! The transistor and its driver solution to Michael's problem should be to replace the 20 capacitor first, then the regulator IC if necessary. If the

-40 capacitor has started to dry out, the job will bounce

when its ESR goes still higher. -60

Table 1: Output capacitor requirements for LM1117 180 and MC33269 regulators Phase shift (0)-270 Regulator Minimum Cout Minimum ESR Maximum ESR -360 10 100 1k 10k 100k 1M 10M Frequency (Hz) LM1117 10pF 0.30 220 MC33269 10pF 0.20 100

480 June 2003 TELEVISION e-mail: [email protected] http://www.wiltsgrove.co.uk WILTSGROVE LTD OR 35/38 River Street, Digbeth, Birmingham B5 5SB Opening Times: 9:00am - 6:00pm (Monday to Saturday) OFFICIAL TEL: 0121 772 2733 - FAX: 0121 766 6100 DISTRIBUTORS VALID UNTIL THE END OF JULY 2003

DIGI-KIT J,'D LASER UNIT -S. . CD LASL,: PICKUP - PHILIPS POWER SUPPLY KITS

GENUINE 01 Enables you to OEM No. KSS210A .1 operate your digital OEM No. VAM2103 box from anywhere I gill \ in the house £9.45 ] (£12.45] £12.45 OMercodcAP-1225

Order code: IR-1086G+DIGIEYE CD LASER PICKUP REPLACEMENT CD LASER PICKUP MODEL No. - SAMSUNG - CI3373T GENUINE SKY REMOTE CONTROL ONLY suitable for SONY OEM No. VAM1202J Order code: TKIT-23 (£21.95 OEM No. KSS2404

£16.7 voraxmoms Order code: AP -1260 Order code: AP -1005R !!! U CD OPTICAL LASER HEAD - PHILIPS EPROM KIT - TEXT VERSION II ono IMP U Order code: IR-10860 111 LASER HEAD ONLY?! 111 EYE LINK - suitable for SKY Digital OEM No. CDM12.4 WIDER ANGLE ( £14.75 OF RECEPTION MODEL No. - THOMSON - ICC20 Order code: AP-1019HD MODEL No. - MATSUI TVR180T, TVR162T, Order code: TKIT.36 £11.35) L) £4.75 TVR161T, BTV170T. CD LASER PICKUP - SONY BUSH - BTV17T. MAINS LEAD 3A FIG 8 WITH PLUG 5+£4.45 ) Molded plug (10+ GENUINE Order code: TKIT-17 £5.95 Order code: SPS-3200 £3.95 1.8m. OEM No. KSS213F L10) SONY WIRELESS SETREO HEADPHONES EPROM KIT - NONE TEXT VERSION £0.89 Operate on built in Ni-Cd £0.79 ) rechargeable battery. rev) IN Order code: LDM-1015 FOTO* 3 Channel options on £0.74 ) transmitter for optimum signal reception. CD LASER PICKUP AERIAL LOOP WITH HOLDER & PLUG Light weight open air headphones with auto REPLACEMENT ON/OFF functions. MODEL No. - MATSUI - TVR180, TVR162S, TVR161. £0.95 ) OEM No KSS213C 1.2m Length 23hr playing time when TATUNG - TVC563. TVC593 £0.90 ) battery is FULLY charged [10+ £6.86 ORION - C1499Y, C2099 50+£0.7-11 Order code: HDP-1015RF £29.95] Order code. TKIT-18 £5.95 Order code: SER-9022

REMOTE CONTROL EXTENDER RF technology allows the REPLACEMENT REMOTE CONTROLS - IN STOCK!! infrared signal to travel through walls, floors & MODEL PRICE (E) MODEL PRICE (£) MODEL PRICE (£) MODEL PRICE (E) ceilings. Enables you to control APOLLO C22BZ5 4.45 VR3985 3.95 KV1412EG 4.85 1 your SAT, DVD, Stereo 120 4.45 C2OBZ5 4.45 56520844 3.95 KVt412ET 4.85 System & most C22BZ5 4.45 KV1412F 4.85 appliances with an IR DECCA PACE C22BZ7 4.45 KV1412UB 4.85 remote control from other DN1471 4.95 MSS500 445 C51EZ5 445 KV1614EC 4.85 rooms in the house. DV9460 4.95 RECEIVER C59EZ7 445 MSS100 4.45 KV1882EC 485 Allows you to extend the DV9499 4.95 MSS1000 445 C66EZ7 4.45 KV1882F 4.85 infrared -signal in more TN8422 4.95 MSS200 4.45 TRANSMITTER than one room with C2OXK5 445 KV1882UB 4.85 DN9422 4.95 MSS Series 4.45 additional transmitters C51GZ5 4.45 KV2052ETTX 4.85 TP9424 4.95 MSS100IP 4.45 C51HZ6 4.45 KV2056EC 4.85 CN8422 4.95 MSS1008 4.45 C59JZ7 4.45 KV2062EC 4.85 £12.95) DT8466 4.95 MSS1008P 4.45 C51G27 445 KV2062UB 4,85 DV8468 4.95 C59FZ5 4.45 MSS138 4.45 Order code: AV -7010 DYS9468 4.94 £11.95 C59FZ6 4 45 MSS238 4.45 SALORA (5+ C59FZ7 445 MSS290 445 22J60 4 45 FINLANDIA MSS300 4.45 C22C24 445 C59G25 4.45 7AZ4 4 45 AUDI() / VIDEO SENDER MSS348 445 26625 445 C59GZ7 4.45 C66FZ6 4.45 MSS500IP 4.45 SANSUI Wireless Audio/Video FREGUSON C66FZ7 4.45 MSS508P 4.45 SVR7020 305 Transmitter with IR APOLLO 4.45 3V35 3.95 C66GZ7 4.45 Remote Control 3V36 3.95 CF1F24 4.45 MSS1001 4.45 SCHNEIDER Extender. MSS1008IP 4.45 3V38 3.95 C66HZ6 4.45 STV2224 4.45 MSS508 445 Built in Infrared Remote 3V39 3.95 C59/66FZ6/7 4.45 MSS538 4.45 TATUNG Control Extender allows 3V42 3.95 C59HA4 4.45 MSS100-1 4 45 TV8448 4.95 you to increase your 3V45 3.95 C591 -1Z6 4.45 MSS301 4.45 019466 existing remote control 3V48 3.95 4.95 C20CD4 TV9448 operating range from 4.95 4.95 ANY room in the house C3615UT 5.45 SONY CV8468 4.95 HITACHI KV2742ES 4.85 DT8466 4.95 24WT25US 6.95 CPB260 445 KV2722ES 4.85 DV9468 4.95 RF Signals 2.4 GNZ £39.95) CPT2488 445 KV2702ES 4.85 GEC SR2070D 4.45 KV27XSO 4.85 THOMSON 4.45 Order code: AV -7030 C2057 SR1051D 4.45 KV27XSC 4.85 14CB25UT 5.45 5+£37.95) 445 C2067 KV27XS 4.85 RCV100 5.45 C2259 4.45 ITT KV2240M 4.85 20CB20C 545 C2267 4.45 VR3975UK 3.95 KV2224ES 4.85 20CB25UT 5.45 WIRELESS PHONE LINE EXTENDER C2273 4.45 KV2222ES 4.85 2tCB25FT 5.45 C2659H 4.45 JVC KV2215E1 4.85 TYPE441A/COMBO 5.45 HRD120 3.95 Turns ANY C2661 4.45 KV2062UB 4.85 HRD121 3.95 home electrical KV2062EI 4.85 RCT4130 6.95 C2001 4.95 HRD140 3.95 socket into a 28WT25U 6.95 C2002 4.95 HRD225 KV2062EC 4.85 phone socket 3.95 28VVT25US 6.95 C2096 4.95 KV2056EC 4.85 32WT45US 6.95 C2097 4.95 LUXOR KV1882UB 4.85 4.95 5568 4.45 KV1882EI 4.85 C2201 THORN C2202 4.95 KV1882EC 4.85 8944 395 C2296 4.95 NOKIA KV1412EG 4.85 8943 3.95 C2297 4.95 VR3905 3.95 KV1614EC 4.85 £59.99 j VR3916 395 KV1412UB 4.85 GRANADA VR3935 3.95 KV2240M 4.85 TOSHIBA C201325 4.45 VR3975 3.95 KV1412EC 4.85 TS540 5 45 **TRADE ONLY**

* PRICES SUBJECT TO AVAILABILITY, VAT 8 CARRIAGE, * PRICES MAYBE CHANGED WITHOUT PRIOR NOTICE. Freefax Orderline:0500 55 05 05 During March into April the main interest was in reception of Gulf War 2 reports via satellite link -ups. This is covered in the extended 'satellite sightings' section below. Terrestrially, DX conditions were generally very, very quiet. There was nominal sporadic E activity on March 8 and 15, with unidentified ch. E2 programmes received. Tropospheric activity was present over the period March 19-22, thanks to a settled high- pressure system. This provided reception of Band III signals from ARD (Germany), DR (Denmark), the Benelux countries and France in eastern and southern England. The 20th was particularly good - the Band III channels were buzzing with ZDF (German) signals. In view of the latest information on German analogue TV (see news section later) such reception may be severely curtailed from the autumn onwards. On a positive note there have been reports that Spanish (TVE) services were still using Band I very late in February, with at least one transmitter in operation in chs. E2, E3 and E4. Hopefully they will remain on air until August at least, to give mature TVDXers a last chance to see these old Band I friends. Satellite sightings Those who engage in satellite newsfeed zapping will know that during the past few weeks the world news has been dominated by the Gulf War. The media build-up started some time before the actual invasion. It consisted of well -rehearsed, slick news presentations, interviews and information updating. II and With the Afghan war in mind I had expected Europe*Star-1 at 45°E to be the main carrier of news but, curiously, it has been comparatively little used. The most active news carrier has been Eutelsat W1 at 10°E, with Eutelsat W2 at 16°E a close runner-up. The main news operators such as Fox News, APTN, Reuters and IHA have used Eutelsat W1 capacity, while the US TV networks Satellite such as ABC, CBS and CNN have opted for Eutelsat W2. One I missed was Service -1 Army/Airforce News at 11.102GHz H (SR 5,632, FEC 3/4) via Eutelsat W2. The BBC opted for Europe*Star-1 on an occasional -use basis, i.e. the uplink is kick- started, the news report transmitted then the uplink powers down. In contrast Fox News has been maintaining its uplinks via Receptio Eutelsat W1 on a 24 -hour basis. In view of the mass of signals received it's not possible to list The Gulf War dominates this month's who saw what, where and when. A summary of sources may be more helpful, as follows. reception reports. Broadcast news. 62°E: Fox News at 11.540GHz H (3,255, 5/6). Latest ways of providing live video 45°E: CNN, Reuters, BBC, APTN, Sky GCR (GlobeCast). news via satellite. PC MPEG decoder 36°E: France -2. 28.5°E: EBU-ABC, TV Heidelberg. cards. Aerial -based noise -cancelling 21.5°E: BBC. This satellite's inclined orbit (3°) means that it is systems. Roger Bunney reports best used for short -duration feeds. 16°E: ABC, CBS, Fox, CNN. Feeds from Baghdad, Kuwait, Doha, Qatar, Cyprus. 13°E: GCR from Kuwait. 10°E: APTN, ABC, CBS, Fox, Sky, JMC, Reuters, IHA. Also many occasional users and Spanish feeds from the Azores summit on March 16. APTN may have been using up to ten channels via this satellite. 7°E: ABC, EBU, IHA and occasional users. 1°W: CNN Kuwait path 1, ABC, CBS. 5°W: Atlantic Bird 3 carried ITN traffic. 12.5°W: Atlantic Bird 1 carried a few ABC, GCR and France 2 feeds. 15°W: NBC via Telstar 12.

Satellites farther west, such as NSS-7 (21.5°W), were used mainly to provide eastbound feeds from the US, i.e. updates, speeches etc. from the Pentagon, Camp David and the White House. There were many of these. PAS -3R at 43°W also carried Gulf War -related eastbound traffic. Saddam Hussein during an interview with Dan Rather (CBS) on This isn't a complete list, but does indicate the high level of February 25, received via Eutelsat W2. traffic during theperiod.

482 June 2003 TELEVISION Most enthusiasts will have found unusual newsfeeds. While I was carrying out a mid -morning scan of Eutelsat W1 on March 23 I came across activity at 11.164GHz H (5,632, 3/4), with the service identification KTU-HOL 157F. The satellite truck was preparing for a news report at a very long bridge that spanned a ravine or river, with a road block in the middle distance. It was a checkpoint in a mountainous region, manned by agitated locals. They looked like Afghanistan fighters, carrying AK47s, and were very interested in the other side of the ravine, where a road wound into the hills. They pointed and the camera zoomed in to see a distant hilltop figure who was in turn observing the bridge. The news report finished then the satellite truck switched off and presumably departed. I suspect that this was a Kurdish frontier post in northern Iraq, to discourage Turks from crossing. On March3RAI uplinked an open-air church service conducted in the mountains. Nice shots of the choir during this 11 a.m. CET service via Eutelsat W 1. Strange to find it amongst the nearby war -orientated feeds. But ordinary life continues. The GlobeCast multiplex at 11.104GHz H (20,145, 3/4) via Atlantic Bird -1 was transmitting eastbound PGA golf, The Players A CBS reporter dons a gas mask during an Iraqi Skud attack on Championships, from two courses, Orlando and Ponte Fedra Kuwait City. Beach, Florida. At the same time Fox Sport Net featured live ice hockey, Chicago v. Pittsburg, via the same multiplex. Satellite news Because of its inclined orbit, Eutelsat 2F3 at 21.5°E is difficult The Immarsat system has been increasingly used in recent weeks to catch. Roger Shaw (Lincolnshire) points out that the orbit is for live video footage (often captioned Videophone) from the Gulf high in the late evening and low late morning. For best results War front line, providing fair -quality images - even from atop a check at about 0500 and 1700 hours GMT. The ITN feeder (4:2:2)tank as it raced across the desert. Pictures tend to suffer from is always on air at 11.096GHz (5,632, 3/4). When I checked on pixellation when there's a lot of movement, because of limited March 27 ITN was present along with three other OB feeds. bandwidth and the current compression technology. Sky and CNN Roger, an aerial and dish installation engineer, has fitted an have used a "specialised tracking satellite phone antenna" that elevation actuator arm to his polar mount for inclined tracking. At the end of March most of the news uplinkers covering the Gulf War were near the River Tigris, Baghdad, on the bank remote from the main government buildings. On the first night of the bombing however an Arab uplink truck was active on the `wrong' side of the river, close to the presidential palace. My TV www.Aerial-Techniques.com screen suddenly went to peak white, followed by a decaying GRUNDIG MULTI -STANDARD `phheeeww' and a bang, then several successive missile hits. MANHATTAN 15" /38cm LCD Multi -Standard PAL SECAM AC/DC 14" PORTABLE TV There were mushrooming explosions, flames and smoke, and For use in the UK, France and Europe Colour TV Light grey cabinet panic amongst the truck's crew. That was the first night of the 240v AC/12v DC International text operational NEW precision bombing, live on the telly. Automatic tuning Scan socket NEW International teletext Automatic standby Broadcast news 2 x1.5w nicam digital Six watts music output speakers Satellite compatible Germany: In several areas analogue transmissions are being Scarf connection PAL/SECAM PC compatible closed down or being operated at reduced power. Transmitters in 14* (34cm) picture tube Remote control Berlin have reduced power or changed frequency: the SAT -1 Silver cabinet Dual voltage/220-240v channels E7 and E25 and RTL channels E27, E33 and E56 have Wall mountable 12/24DC, 50/60Hz been transferred to DVB-T form. Latest information is that all Slim and lightweight £599.00 Multi -system reception The ideal size for travelling ATS tuning system £299.00 analogue transmissions in the Berlin region will cease by August 1. Reception covers:- PAL system I(for UK); PAL Infra -red remote control The RTL-2 transmitters at Bremen, ch. 58, and Bremerhaven, systems B/G (for Europe); PAL system D (for China); SECAM L (for France); SECAM D/K (for ; Overnight deliver for all items ch. 57, have closed, with the frequencies to be used for DVB-T. Eastern Europe); and SECAM BIG. \ inured courier L12.00 Most of the VOX -TV transmitters in the Nordrhein-Westfalen Also available in 20" screen. region have closed (chs. 22, 26, 27, 31, 38, 51 and 57), soon to be followed by chs. 32 and 49. The BDXC column editor comments NEW THOMSON that analogue TV in Germany may close by August 2003! DS14101 LOW RSL-TV: In my station listing in the February issue Lanarkshire THRESHOLD was shown as being off -air. The ITC has confirmed that the Digital satellite receiver Thistle Technology Group is the licence holder. Transmissions Complete digital satellite system were due to start on March 29. available for only £399.00 MI5 Includes: Additional extra available, 60cm mesh dish kit. New Swivel top tripod = £49.95. Historical TV: Just over seventy five years ago, in Plus all connection cables & plugs Satellite signal finder = £29.95. January/February 1928, Baird successfully transmitted 30 -line TV Free viewing card accessing: BBC1, BBC2, ITV -1, Folding 64cm dish (including digital LNB) = £79.95 pictures from England to New York. The anniversary was marked Channels 4 & 5, all the BBC radio stations. Folding 88cm dish (including digital LNB). £89.95 Plus many other channels. ALL PRICES INC VAT with special 30 -line picture transmissions on February 8/9 from the Amberley Working Museum, West Sussex (GB2KZ), with MULTI -STANDARD SPECIALISTS reception at the Antique Wireless Association's New York FULLY COMPREHENSIVE 35 PAGE CATALOGUE AVAILABLE BY RETURN OF POST FOR £1.50 museum, using a replica 30 -line disc receiver. The transmissions 59 Watcombe Road, Southbourne, Bournemouth, Dorset 11U6 31,X Tel: 01202-423555 Fax: 01202-425055 were in the 15m amateur band, and the UK Narrow Band TV I I mail ilechtiillireon.co.uk Est 1979 5 Association (NBTVA) was involved in the project. \ ppoinIment please

TELEVISION June 2003 483 Eik in Norway, Santa Paula in California and Southbury, Connecticut to provide improved, high-speed access to the Immarsat system. Ham satellite programme A monthly amateur radio programme, Club-TV/Ham Radio, is being downlinked from the vintage Astra 1 A satellite, which is now at 5.2°E where it sits in an increasingly inclined orbit (044° in February). The transmission frequency is 11323GHz H (SR 6,667, FEC 1/2, VPID 4130, APID 4131, PCR 4130). SM6CKU organises and uplinks the programme, which is sponsored by the Swedish microwave company Parabolic. To date there have been broadcasts on February and March 9 and April 27 at 0900-1000 hours GMT. For further details, dates etc. check at the Parabolic Front view of the Timewave ANC -4 noise -canceller unit. Sockets web site. Home-made video contributions on radio -related for the aerial inputs and output are at the rear. subjects, of "reasonable quality", are being sought. I received the March transmission near Southampton using a locks to the satellite beacon downlink and provides stable uplink 1.2m dish, but after about twenty minutes reception became signals during vehicle or ship movement. In addition their intermittent then dropped out completely. Those in East Anglia videophones have enhanced video quality. Sky has used its were able to receive the entire one -hour programme however. system on the USS Kitty Hawk. Anyone in central -south UK and farther west may experience Satellite uplink trucks will continue to provide high -quality reception problems, as the downlink beam favours Scandinavia transmissions for some years to come but I wonder whether, and there's the inclined orbital drift. The EIRP level falls off during the next decade, OB hookups will use little more than a rapidly outside the basic footprint. small dish - or a foldout planar display -a laptop and a monitor/camera? Several companies, including the Swedish Technisat SkyStar boards microwave firm SWE.dish, currently manufacture news-uplinking A computer board that's capable of resolving various MPEG technology. But Geolink markets both the equipment and satellite transmissions is available from Technisat. If you go to access time. This company was set up in the early Nineties to www.sateuropa.co.uk you will find various computer and provide mobile satellite communications equipment and airtime satellite products listed, including the Technisat SkyStar 2 PC for the marine, exploration and remote mineral exploitation card. This is described as a "digital TVB satellite PC card for TV industries. More recently it combined with a French development and radio programmes, including PVR recording, plus data and company to form DVonSAT, which sells small uplink terminals high-speed interne". The price quoted on March 24 was £89 that use Immarsat capacity. including VAT and delivery. Recently Roger Shaw told me he A typical uplink package consists of a small foldout aerial andhad obtained the card for £59 plus £3.50 postage from Wizard transmission equipment, usually the Immarsat M4 unit, fed from Satellite Co., Shilton, Leicestershire, LE9 7PD (0145 544 404, or a modified laptop combined with a video -compression module www.wizardsatellite.co.uk). The card has been welcomed by that accepts video and audio inputs. Very small cameras which those in the satellite Feedhunters group since it can handle provide excellent video are available. A reporter can carry the MPEG signals with 4:2:2 sampling. I'd appreciate information whole package around with relative ease, assemble it within a from anyone who has used the board. few minutes and provide live news material without having to The sateuropa site also mentions the more expensive Technisat book satellite capacity, lines etc. It's quick to rig, quick to use - SkyStar 1 PC card for receiving FTA and encrypted and it's cheap! These small units were used during the programming. An adaptor is available to enable CI modules to be Afghanistan War, the Vendee Globe Challenge two years ago, inserted. Simon Docker of sateuropa confirms that the SkyStar 2 and Ellen Macarthur's November 2002 yacht adventure. They card can handle standard MPEG-2 and the 4:2:2 version. have now been used for Gulf War coverage. Geolink plans to expand its coverage and make facilities Aerial -based noise -cancellation systems available to yachts, cruise ships etc. As video -compression There can be few locations nowadays where RF interference is techniques improve, so will the quality of Immarsat-carried not a problem. I've had interference problems since my earliest DVonSAT pictures. There is bound to be development and attempts at DX -TV reception. In 1963 it was RF diathermy from expansion in this field over the next few years. Last year Oslo - a nearby hospital. In the mid -Seventies a more serious problem based Telenor Satellite Services upgraded its earth stations at arose when VDUs at a nearby brewery distribution office came into operation, producing heavy interference across the VHF spectrum. That problem was overcome by using a directional aerial, with careful orientation and polarisation adjustment. Subsequently I read about an aerial noise -cancelling system for the HF amateur bands, designed by Ken Franklin of RadMic Systems, Crawley. He kindly supplied me with circuit details, and I was able to build a system that was scaled up for VHF use. An article on this appeared in the January 1981 issue of Television. It was effective though difficult to optimise. A later version used simplified circuitry. The theory is simple, and in practice the technique is very efficient in eliminating interference from a single source. Fig. 1 shows the aerial noise -cancelling system in block -diagram form. The main aerial picks up the wanted signal and also unwanted interference - say from a neighbour's computer. The noise aerial is used to pick up maximum interference. This is phase shifted and amplitude adjusted to be in opposite phase and equal amplitude to the interference picked up by the main aerial. Then, Internal view of the Timewave ANC -4 noise -canceller unit. when the two inputs are fed to a combiner, the interference

484 June 2003 TELEVISION Input from 0 main aerial

Select 0° - 180° orD 180° - 360° shift Low loss0 Output to0 combiner receiver

Input from[0 Phase0 NoiseD AttenuatorD noise aerial shifter amp (e.g. pin diode) +ve

Fig. 1: Block diagram of adj. Level° ad( an aerial -based noise - cancelling system.

cancels out, leaving just the wanted signal as the output to the I found that the ANC -4 achieved interference reduction of 10- receiver. Controls are provided to adjust the interference signal 45dB depending on how many signals were present in the phase shift and amplitude. channel. My tests were carried out using a horizontal wideband With my early system interference reduction of up to 40dB Band I dipole as the main aerial and a wideband discone as the was obtained. Articles on simpler systems, with detailed circuits, noise aerial. At my location, in a large modern residential appeared in the Australian publication Amateur Radio in estate, 49MHz interference is rampant - and in the directions February 1993 and the US publication Monitoring Times in May from which most DX signals come! By the time you read this the 1996. Both work across Band I. The ANC -4 unit that's currently Sporadic E season should have started, enabling me to try the available from Timewave Technology Inc. claims to provide up ANC -4 in difficult conditions. I'll report back on the results. to a 45dB interference reduction at up to 80MHz. I've recently The Timewave ANC -4 is distributed by Nevada, Portsmouth tried it, also the QRM Eliminator that was produced by the now and costs £199. Waters and Stanton, Essex, can supply the US defunct SEM Co. of Douglas, Isle of Man. The latter unit didn't MFJ1025 and MFJ1026 units which cover 1.8-30MHz. I can't really seem to be suited to VHF operation, but provides some comment on their efficiency at VHF. interference reduction at 50MHz. My late Seventies phaser unit wouldn't cost more than about The ANC -4 'Antenna Noise Canceller' is well designed and £5 to build, using all new components. Construction is relatively housed in a steel case - see accompanying photos. When I easy. If there's enough interest, I'll include a circuit in a later selected specific 49MHz band channels with my R7000 scanner column. OLOUR TRADE

POSSTPLY PGEST F. OLDEST EST.fru TECHNICAL SUPPORT THE UV EST FOP Now Available 3D YEA PS TV's, DVD's, VCR & AUDIO Over 40 years of genuine experience Wholesalirl=4"T"tr6 I " ors Expert Agents of Domestic Electronics & Appliances Experts on: - Thomson Sanyo Beko LG Tatung Ferguson FULL RANGE OF FACTORY Bush Funai Pacific Dansai Samsung & more GRADED TV's DVD / VIDEOS HI-FI SMALL & LARGE 0907 70 80 DOMESTIC GOODS 97ll cost6p MAIN DEALER hompson 0

Tel: 0121 359 7020 Fax: 0121 359 6344 Phoenix House, 190 Bridge St. West, Newtown, Birmingham B19 2YT Email: [email protected]

TELEVISION June 2003 485 So it was on the MPEG not the power supply/power amplifier board. The first place the -10V supply goes to on the MPEG board is a three-legged filter, FLO12. It then goes off to feed eleven operational amplifiers and IC507, which is labelled 'audio level adjust'. There are also various decoupling capacitors across the supply. Now despite all the problems that surface -mounted electrolytics cause, I've not found them prone to going short-circuit. But as it was going to be a lot easier to check them than to start lifting the supply pins of the twelve surface -mounted ICs, I decided to concentrate on them first. The third one I checked, C529 (47µF, 16V) proved to be short-circuit. A replacement restored normal operation. G.D. Sanyo JCX-TS750 The complaint with this home cinema unit was "not coming out in colour". When I'd Sony HCD-S300 obtained the remote -control handset, This unit is part of home -cinema system which had been left behind with the dealer DAV-S300. It belongs to my wife's who sent the unit to me, I found a button at business partner's daughter, so it was a the bottom left marked 'picture mode'. `must -fix' job (don't you just love One of the modes is 'black and white' (I DVD them?!). Her husband brought it over, wonder why?). When it had been reset to complete with a speaker, so that I could normal, colour was present on all the Fault reports from hear the dreadful noise he swore it made outputs. G.D. Geoff Darby when it had been on for a while. I set it up to run on the bench. Initially, Sony HCD-S800 Mark Hiles it seemed to be OK. Then the picture If one of these DVD/tuner/amplifiers is started bouncing around the screen, dead with the fuse OK, replace the Mike Leach sometimes dropping out completely. Pops RK46LF diode D909 on the power supply and thumps on the sound accompanied board. It goes short-circuit. The part no. is and Chris Bowers this. Finally there was a fearful howl, with 8-719-059-21. M.H. a badly broken up picture. Scope checks at this time showed that the analogue -10V Dansai DVD1010 supply was generally low, with massive The power supply was extremely noisy disturbance on it. The regulator IC903 was and there were no functions or illuminated getting hot. LEDs on the front display. A visual check I initially suspected the regulator itself, on the power supply revealed that there or one of the adjacent decoupling were three bulging 1,0001iF capacitors. capacitors. But the cause of the trouble Once the three of them had been replaced was nowhere near the power supply the machine worked well. M.L. physically. It was a further, surface - mounted decoupling capacitor, C555 Sony HCD-S880 (47/4F, 16V), which is at the rear, right There was no disc -loading operation with edge of the DVD board. On closer this unit. A look inside the DVD player inspection I saw that there was quite a revealed the cause - no rotation of the bulge in the top of its can. A replacement rubber loading rollers. I've had this fault restored normal sound and vision stability before, with an HCD-S550. The solution - and won me brownie points all round! is to replace pulley RTR (item 501) and G.D. pulley RTL (item 505) with improved parts, which can be distinguished by the Sony HCD-S300 black mark on top. Part numbers are X- The customer's complaint about this 4954-711-3 for pulley RTR and X-4954- integrated DVD player/six-channel 712-3 for pulley RTL. Once the new amplifier was "when you switch it on it pulleys had been fitted the loading squeals". And boy, didn't it just! In mechanism worked normally. This was addition it popped, banged and made other followed by a quick set-up and check on noises that defy description. Then, after the DVD player. C.B. about thirty seconds, something started to We welcome fault reports from smell very hot and distressed. I burnt my Sony HCD-S800 readers - payment for each finger establishing that this was IC903. It's There was an intermittent volume drop fault is made after publication. labelled '5V reg' in the service manual but from the front left-hand column speaker is actually the -10V regulator. There was awith the DAV-S800 DVD player. The See page 489 for details of dead short across its output. When plug cause was a dry -joint at L401 on side B of where and how to send reports. CN902, which goes to the MPEG board, the amplifier PCB. The cure was a quick

was disconnected the short disappeared. resolder. C.B.

486 June 2003 TELEVISION Send letters to "Television", Highbury Business Communications, Anne Boleyn House, 9-13 Ewell Road, Cheam, Surrey SM3 8BZ or e-mail [email protected] using subject heading 'Television Letters'.

Please send plain text messages. Do NOT send attachments. Be sure to type your full name, address, postcode, telephone and e-mail address (if any). Your address and telephone number will not be published but your e-mail address will unless you state otherwise. Please send ONLY text intended for the letters page. Correspondence relating to subscriptions and other matters must be sent to the office address given above.

was clear that the box was never going to said that she had examined the invoice work again. A lot of the chips had given to the customer. This had clearly blackened pins, and the through -board stated that there was a six-month links had no doubt suffered. guarantee on reconditioned digiboxes. When he told the customer what had She declared that as this written guarantee happened, the customer denied all had no exclusions, it must cover all and knowledge of a spill and said the box any type of failure. must have been in that condition when he Needless to say the installer has now A warning bought it five months previously. He said had his invoice books revised and A local aerial installer brings me Sky he would take the aerial installer to court reprinted. digiboxes for repair. When they have to recover his money if it was not Michael Dranfield, been refurbished he sells and installs themrefunded. Another independent estimate Buxton, Derbyshire. for customers who don't want to get tied was obtained to confirm that the box had to a Sky contract or are without a indeed been subject to spillage or pet TiVo telephone line. He recently brought along damage. The case then went to the small It's rather sad that a product which could a Panasonic TU-DSB30 that was stuck in claims court. have revolutionised the way we watch and standby. He had installed it five months I told the installer that he had a clear- record our TV programmes has been earlier, and it had now failed during his cut case and couldn't lose. How wrong I discontinued. I bought my TiVo in six-month guarantee. was. The lady judge considered all the January this year, and it has changed the On inspection I found that the box was evidence and declared the aerial installer way in which we record our programmes. suffering from the effects of spillage. the guilty party. When I asked how she Perhaps the most significant advantage is Most of the PCB had been affected, and it had come to this decision, the installer that we can actually find what we recorded! You know what happens. You record your favourite programme and An odd condition leave the tape in the video. Next morning Faults are now coming to me in pairs! My first two calls on a Monday morning the kids come down, eject the tape and were to a couple of Ferguson Model T68NB sets (TX92 chassis). Both were dead, throw it on the pile of other tapes, never with a slight whining noise that came from the line output stage. As quick checks to be found again - so that they can watch around the LOPTs failed reveal any component failures, two new transformers the Tweenies, Teletubies or whatever else were ordered. takes their fancy! Your recording? Well, Several days later I returned to the first set and fitted the replacement LOPT. you can spend all night searching for it. This cured the noise, but I now had what appeared to be a tripping set, i.e. dead And if and when you do find it, it's time with the front LED flashing. The set is quite big, and I didn't fancy lugging it to go to bed! Need I say more? back to the workshop. So I checked as many points as I could for short-circuits. But seriously, the recordings made by None were found. the TiVo are of near -broadcast quality. In desperation I returned to the car to dig out my photocopy of the circuit dia- And, more importantly, the software gram. On finding it I saw that I had written on it "if the set appears to be tripping, system, which in theory means that you press any of the number buttons on the remote -control unit as the set may be in should never miss a programme, is the child -lock mode". Sure enough this action cured the fault. Was my original excellent. The machine is also very easy diagnosis correct? I refitted the old LOPT and found that the original fault had to use. returned, so at least my original diagnosis was correct. So why has TiVo failed? The answer is Feeling slightly humbled, I went on to the second set and fitted its new LOPT. not in the product but in its marketing. Then, you've guessed it, I had the same problem! Once again pressing a num- When we told friends that we had bought bered button on the remote -control unit brought the set back to life. a TiVo, the response was always "a So, be warned: if, having replaced the LOPT in one of these sets, you get a what?" No one had heard of it. When we flashing LED, don't waste valuable time looking for a fault that isn't there. Just told them what it could do, they were press a remote -control unit number button. suddenly interested. But now it's too late. But can anyone explain how a faulty LOPT can put the set in the child -lock There was no television or newspaper mode? Both customers said they didn't know that here was a child -lock mode. advertising for the product, and no front- Matthew Biddlecombe, line promotions in the major shops or West White Vision, even at independent dealers. Sky has its Isle of Wight. own version of course, Sky+. But this is only now beginning to take off - through

TELEVISION June 2003 487 promotions to existing customers. And replacing it with something more Wanted request for a circuit diagram for a you have to subscribe to Sky to get it. conventional. The VW handbook and the forty -year old Hacker radio. Thanks to It's not the first time that a product or Haynes manual had little information to them, the set is now working again - after system has failed to take off because of offer, though the former contained the a twenty-year break! lack of promotion. Remember the Philips usual dire warnings about DIY radio Nicholas Arnold, BDS, 2000 VCR system? It was far superior to installation and non -VW head units. Upper Wolvercote, Oxford. Betamax or VHS, but because of the huge Eventually I just gave up listening to the promotion given to VHS this system was radio. Where there's a will ... assured of success. The penny finally dropped when I was Philip Bearman's letter (May) reminded I hope that TiVo won't abandon the studying the rather cryptic circuit diagram me of a similar situation when I lived near UK completely. But if the product should to repair a fault with the windscreen Orpington in the Fifties. A friend of mine be made available again, it must be wipers. I noticed that the aerial was was not short of signal (Crystal Palace marketed properly. Shove it in the faces shown as a grey box with a transistor had just opened, and we had to go around and down the throats of the British public. symbol in it, which in automotive fitting attenuators to everything) but was Show them what it can do and how it can schematics means a module that contains short of a mains supply. He asked me if revolutionise your TV life - and please active devices. It turned out that there was any way in which he could have give it PDC. I remain convinced that it somewhere between the actual aerial mast TV. could, handled properly, be a winner. and the plug at the back of the stereo there Use of a 12V supply seemed to be the Michael Maurice, is a line -powered RF amplifier. logical way forward. So I obtained a 9in. Wembley, Middx. Comparison with a colleague's Polo Pye Model LV20 (I think), which used showed that there should be about 6V Mullard B9A valves. They were mostly Car radios across the aerial's coaxial cable. After prefixed E, denoting 6.3V heaters, but the My 1999 Volkswagen Polo was supplied checking that there was a DC blocking line output stage had a PL81 and a PY81. with a VW-badged Sony radio -cassette. capacitor fitted in the radio, I fitted a These required an 0.3A heater supply, but When this was stolen I decided to install 2200, 0.5W resistor on the print side of at a voltage somewhat higher than 12V. something less tempting, and was pleased the PCB, between the switched 12V line So I replaced them with an EL81 and an when I spotted an old but immaculate and and the aerial socket. The improvement EY81, which enabled me to series -parallel very high quality Panasonic -made OEM was vast: nearly twenty FM stations could connect all the valve heaters to run at unit at the local breaker's yard. After now be received in glorious stereo, and 12V. An ex -WD rotary converter was parting with £5 I gave it a quick service, good old Radio 4 LW was back on form. used to obtain the HT supply, and the tested it then installed it in my car. I would be very interested to know whole thing worked satisfactorily from a The tape section performed superbly, whether this arrangement is just a 12V battery - except that some assistance but radio reception was very peculiarity with VWs, or whether modern was needed because of the current disappointing. The AM bands were cars with their compact aerials usually required. So to phase 2. drowned by RF hash from the car's require a radio with a DC voltage at the I obtained a small petrol engine which electronic control unit, while FM was aerial input. If so, do all recent head units I used to drive a car dynamo. But even weak, with the automatic preset facility cater for this? this couldn't supply the current required being able to find only two or three Readers may also be interested in a US without considerable overheating. After stations. Use of the wipers or headlights website that gives connection details for burning out a couple of dynamos I came added to the problem. I tried a sturdier most factory -fitted stereo units. This up with the idea of using water cooling, earth strap, powering the unit from a information is quite useful when but not in the conventional way. I separate battery and retensioning the upgrading such a unit and is essential if mounted a water container above the aerial connector, but the problem you want to reinstall one that's been dynamo and arranged a drip feed on to a persisted. salvaged from another car. The address is cloth pad laid over it. This worked, as I was beginning to suspect that the http://www.carstereohelp.com/wirehar long as they remembered to keep the Polo's diminutive 12in. aerial was in ness.htm water container full. Happy days! some way mismatched to the tuner's Finally, I'd like to thank the many Peter Nutkins, front-end, and toyed with the idea of readers who kindly answered my Help Charmouth, Dorset. Obituary Ian Charles Beckett subsequently built a 6ft C -band dish system. More recently Ian, now helped by his son, continued working It was with extreme sadness that I received a phone call onwith VCRs, digital TV and video, Sky satellite April 29 from Jennifer Beckett to tell me that Ian, my old installations and other domestic entertainment technology friend of some 45 years, had passed away peacefully the -a long way removed from ch. 4 Belling -Lee H aerials for previous afternoon, while resting. I've known Ian since Sutton Coldfield! the late Fifties, when he repaired TV sets at Marriotts in I met Ian through a shared interest in DX -TV. He Buckingham high street. This was a retail shop that, at the helped me in the early days, and we both benefited by time, sold bikes, radio sets and TV receivers. Ian installed knowing the DXing legend Charles Rafarel. Unfortunately and repaired this equipment, and also had to erect ch. 4 Ian suffered from diabetes from the mid -Sixties, Sutton Coldfield and ch. 8 Lichfield aerials - or the subsequently had related vision difficulties, and most equivalent aerials for chs. 1 and 9 London. recently a kidney disorder that required frequent dialysis. Soon after marrying Jennifer Ian became self- Ian helped many people. I will miss him as a friend of employed, covering the country area around Buckingham. long standing, and wish to extend to his wife Jennifer and He became well-known locally. Colour TV and 625 lines sons Colin and James my own and readers' sympathy in arrived then, in 1975, Ian constructed a working system their sad loss. Rest in peace, Ian. for reception from the Indian ATS-6 UHF TV satellite. He Roger Bunney

488 June 2003 TELEVISION Mitsubishi XJ64880 Taxan EV2280 Checks on this dead monitor revealed that This huge and very new monitor powered the 2SC5584 line output transistor Q433 up, with light from the green LED, but and the 2SJ449 B+ regulator FET Q402 there was no display and noEHT.After a were both short-circuit. When long and tedious strip down, visual replacements had been fitted there was a inspection of the chassis revealed a good display, but they failed after a few massive dry -joint at the base connection of hours during a soak test. On the basis of the line output transistor (Q523), despite a past experience with Mitsubishi monitors I large rivet through the hole. There was a decided to check the UGO2D base drive first-class display once this connection had diode D410 and found that it had a slight been resoldered.G.M. leak. Replacement of all three devices restored reliable operation.G.M. Proview 564DM This monitor was dead with a blown mains AOC 5V1r fuse (F501, 3AT) and a scorch mark on the There was no display though the monitor's HT track to the IRF634A B+ regulator front LED lit up green. There was no FET Q614, between J61 and L604. When sound of an EHT rustle up either. A quick checked Q614 was found to be short- visual inspection in the line output stage circuit drain -to -source. The track is very revealed a huge dry -joint at plug P401. thin and easily burns when there's This connector is in series with the line excessive current. I had to replace the scan coils, on the CRT yoke, and has a mains fuse, Q614 and the line output large bundle of insulated wire connected to transformer.A.R.W. MONITORS it. The bundle is wrapped round the outside of the yoke.G.M. Apricot XJ55639 (VT17) Fault reports from There was a very prominent red raster with Fujitsu Siemens 151E (5EIr) flyback lines, and the red cut-off control Gerry Mumford This monitor gave the impression that it had no effect whatsoever. So I had to Alun Rawson -Williams was totally dead, but checks showed that remove the signals panel at the back of the the power supply was running. There was monitor: eleven screws that hold the Michael Smallwood no 15V output however, because the metalwork, another four that hold the PCB relevant rectifier diode D922 (HER303) and nine small plugs that connect it to the and was short-circuit. A replacement cured the motherboard and the CRT base board. A fault. check on R187 (56kQ, 0.125W) showed Ian Field Presumably the current from this that it was open -circuit. It's the collector secondary -side output was too low to load resistor for Q163 (2SC2229).A.R-W. cause the usual excess -current tripping with a UC3842-based supply.G.M. Mitac MB03, type L1555GD-1 The lady executive -type customer said that Proview PK770M there had often been line collapse when This monitor was stone dead. Some quick this monitor was switched on. But it could checks in the power supply revealed that a always be cured with a thump on the side blow up had occurred, destroying the of the cabinet, and the monitor would then IRFBC4OG chopper FET Q502, the be OK until it was switched on next day. UC3842 chopper control chip IC502 and Now it wouldn't work at all, no matter the 0.2452, 1W current -sensing resistor how much the cabinet was bashed. R523. Unusually, all four UF4007 mains I thought she was going to cry at any We welcome fault reports from readers bridge rectifier diodes, D512-5, had been second, or was she putting it all on? - payment for each fault is made after damaged along with the 3A fuse F502. Anyway it certainly worked. I put aside The monitor powered up after the the job I was doing and placed the MB03 publication. rebuild but just squealed loudly. There was on the spare workbench. Once the dry - a short across the 80V video supply, joints at the scan -coil connector and the Reports can be sent by post to: whose UF4007 rectifier D507 was short- LOPT pins had been resoldered everything circuit. This diode would get very hot, was fine. I've since wondered whether the Television, Fault Reports, smoke and fail again at switch on. so-called "bashing" the poor monitor had Anne Boleyn House, When the 80V supply arrives at the received had contributed to any of the 9-13 Ewell Road, CRT neck board it's used to bias the tube's extra bad connections.A.R-W. Cheam, cathodes via three separate zener Surrey SM3 8BZ regulators. Checks on this PCB showed Relisys Teco Model KM511, that the six BAV21 DC restorer diodes chassis C411 D203, D205, D233, D235, D263 and D265 This 15in. monitor looked dead, but the or e -mailed to: all had leakage varying from a few IS2 to mains fuse was intact and there was a [email protected] almost a short-circuit. Replacing these current surge at switch on. When I diodes finally cured the fault.G.M. removed the back I detected the smell of a

TELEVISION June 2003 489 cooking component and felt warm air on flux as required. This was tedious and JD 144L my face. Some fingertip checks revealed time-consuming, but it did the trick! I.F. The complaint was that this one "went that the 12V supply rectifier diode D917 pop". With monitors from this was hot. In fact it was short-circuit, SM785F manufacturer (Jean) it's always best to measuring 1.552 both ways. There was no indication as to the inspect the soldering and carry out any For the repair I used a replacement manufacturer of this 17in. monitor, but the reworking required before doing anything taken from a scrap monitor. It was marked design and assembly style suggested else. Once I'd done this, an inspection of B036 HER303 and was of the 3A -rated Samsung or, more likely, Hyundai. The the top side of the main board failed to size. But I've not been able to find these problem was a very dim picture. reveal any visibly damaged components. numbers in any of my semiconductor data The heater voltage was low, with the HT It didn't look as if there'd been a blow up, books. M.S. voltage about right. So this looked like so I applied power. The monitor then another chopper transformer that's worked fine. I suspect that the "pop" Elonex TE1464G designed to work with a Schottky -barrier might have been caused by the solder on I couldn't decipher the complaint on the heater rectifier. I noticed that the reservoir the mains bridge rectifier's reservoir label that accompanied this monitor, so I capacitor C159 (1,000pF, 25V) was getting capacitor spluttering when the switch -on powered it up. The result was a perfect hot. The usual reason is the reverse - surge occurred. Its joints had been display. All that a phone call to the recovery current when a normal silicon - amongst the worst. I.F. customer revealed was that he couldn't diode rectifier is used: it will try to remember what the problem was! By now discharge the electrolytic as the waveform Gateway 2000 Model 500CS the monitor had warmed up however and, starts its negative -going transition. You "Picture goes purple intermittently" the as soon as I moved it, the display don't get this effect with a Schottky -barrier customer said. He insisted that the signal vanished. I then found that flexing the diode, the main problem here being caused cable must have a broken wire inside it main PCB made the fault come and go. by the junction capacitance, which has to close to the cable gland. After spending But after a fairly thorough resoldering be shunted. The reservoir capacitor has some time pulling, twisting and bending session the display was permanently both ESR and inductance, so a non - the cable at this end without any sign of blanked. polarised shunt, such as a Mylar capacitor, the fault, I became concerned that if I With this monitor application of a must be added. continued I would almost certainly cause Steinel continuity tester between the By the time a monitor afflicted in this a fault rather than find one. CRT's control grid pin and chassis draws way comes in for attention the CRT's So I transferred attention to the CRT just enough current to shunt the negative cathodes have usually been badly base PCB. Applying pressure here, in voltage and make the scan visible without contaminated as a result of being under - various directions, didn't produce the altering any adjustments. I then saw that run. Most screensavers keep the beam fault either. I removed the screening plate the line scanning was only a couple of current to a minimum, the end result being to examine the soldering and found a inches wide, apparently with foldover at that there's insufficient current to scatter pronounced fracture around the soldered both ends. A more concentrated attack on the positive ions before these bombard the joint at the green cathode pin. But I still the soldering in the scan area of the PCB cathodes and cause irrepairable damage. couldn't instigate the fault. I gave the produced only a slight improvement. The The best screensavers collapse the contrast CRT PCB an all -point resolder to clear scanning was wider and visible, but range without reducing the average screen any possible trouble. I.F. horribly distorted. At this point I found brightness or beam current. that the function LED was stuck on width - Once this basic fault had been dealt with CTX 1415GM adjust and that the up/down buttons did I found that there was severe geometry There was a half-size display in both nothing. distortion. The clue here was that the axes. Despite the rather daunting With the monitor propped upside down, heatsink for the TDA8172 frame output IC symptoms, with very severe line scan I released the two screws that hold the PCB became extremely hot. The display would foldback, the fault was easy to deal with. to the front assembly, so that it could be appear perfectly from cold, then distort As I switched through the patterns slid back to give access to the soldering badly within a few seconds. The fault was available on my test program it became around the front -panel microcontroller not obvious from examining the vertical clear that the symptoms depended on chip. Normal operation was restored once linearity, but affected both the geometry beam current. The dots pattern produced the soldering here had been dealt with. I.F. correction and dynamic focus circuits. This an undistorted but still small scan, while a has to go down in the book as a design fault display with more content (more average Atari -converted AOC MM415 that's unlikely to be curable. But a beam current) produced the distorted This 14in. high -resolution monochrome relatively simple modification produced a horizontal scanning. This was all very monitor had a displaced display. "A nice considerable improvement. interesting, but the real clue was that the easy one" the accompanying note said, I removed the heatsink and scrubbed it symptoms diminished as the monitor "the position rings on the neck of the CRT with a steel -wire brush. This increases the warmed up. must have shifted". It was easy enough to effective radiating surface area. In addition I switched off and carried out a hasty get the display back to the correct I used a marker pen to black the surface, fingertip test on how hot the various position, but the next time the monitor for the same reason that some of the better electrolytic capacitors were. C722 (47pF, was moved the display shifted to a false manufacturers use 'black -anodised' 50V) next to the line output heatsink had vertical lock! Sometimes the appearance heatsinks: it makes a significant difference been running the hottest. When I checked it of the soldering gives little clue to its to heatsink efficiency. With this with the ESR meter the pointer didn't budge! condition. This was one of those times. modification the geometry errors had been Once a replacement had been fitted the The only solution was to reflow every significantly reduced but not completely monitor produced a full-size, undistorted

single solder joint, adding fresh solder and eliminated. I.F. display. I.F.

490 June 2003 TELEVISION IP 140 40 */ VIDEO Dil?LaY (EUROPE) LiEHEED Video Display (Europe) Ltd, Unit 5, Old Forge Trading Est Dudley Road, Lye, Stourbridge, West Midlands DY9 8EL United Kingdom Data & Display Tel 44 (0) 1384 894777 Fax: 44 (0) 1384 895788 [email protected] Components Hitachi VTF150 The usual cause of braking problems The only sign of life that this machine with the Turbo deck is broken plastic produced was a just -audible squawk at holders, under the deck, for the pulse roller switch on. I found that zener diode D9 had or brake levers. But this model uses a later gone short-circuit, the failure being version of the deck. While removing it to triggered by C16 nearby. The latter had discover this a spring fell on to the developed a high ESR with age, thus workbench. It had come from the top of the reducing the sampling voltage and pushing deck, and should be fitted to the supply - up the other output levels.E.T. spool brake arm. No reason for its displacement could be found, and refitting it Toshiba V701UK cured the problem.B.F. The reel drive was 'snatchy' in all modes - play, search, fast forward and rewind. The Mitsubishi HS651 cause was the centre -gear assembly, part no. When record was selected the take-up spool BY730111, which was cracked. stayed still for three seconds then caught up. You can also get this fault with some The tape tangled on eject, with a tape loop. SonyVCRs that use the same deck.E.T. Check the play/rewind/FF idler clutch assembly for a damaged spring. In this event Toshiba V631UK the assembly will have to be replaced.D.R. This VCR appears to be of Samsung manufacture. The complaint was no scart or Panasonic NVSD220 RF video output - the customer mentioned (K mechanism) that the fault had occurred after connecting aMoisture down the coaxial cable had caused VCR CLINIC TV set to the scart socket. I spotted the havoc in the tuner/modulator unit. So the cause of the trouble straight away. The 44 - unit was sent to those fine people at MCES. Reports from pin, surface -mounted LA73024 chip IC801, In the meantime, after thoroughly cleaning which is right behind the scart sockets, was the PCB, I tried the machine out. There was Eugene Trundle not properly soldered to the PCB. On closer no display, and the head drum took off at Michael Dranfield inspection I saw that the chip had become high speed. Checks in the servo system very hot, the solder had melted and the brought me to the 2SD1996 5V regulator Bob Flynn SRBP board had blistered, pushing the chip transistor Q1005 which was open -circuit off the board. base -to -emitter.R.B. Dean Ratcliffe A new IC cured the fault, but it was Roger Burchett difficult to get it to sit flat as the board had NC HRD960 blistered quite badly. I advised the customer This machine intermittently ejected the tape Peter Dolman to unplug his equipment before reconnectingwhen play or fast forward was selected. I the leads.M.D. never saw this, but the owner is not Robert Marshall someone who imagines things. So I delved Jerry Fedorak and Philips VR600 (Turbo deck) into the power supply and found that C19 If the only response to remote -control (470pF, 25V) was leaking badly. I've had James Grant commands is for VCR1 to appear in the this failure before, but on previous display, as with TV/VCR combi units the occasions fast forward and reverse have remote -control unit has to be reset to VCR1 been affected.R.B. to match the VCR. Unlike the combi units, with this model you press select and 1 Panasonic NVSD220 together and then the OK button.B.F. Water had got into this machine and the demodulator pack had to be replaced. Coils Sony EVS550E L7601-3 on top of the main board had also This Video -8 machine appeared to be dead, suffered and had to be replaced - the legs but in fact the power supply was producing fell from the bodies when these coils were very low outputs. Normal operation was removed. I then switched on, but the restored when the following capacitors, demodulator's output couldn't be found. which were all faulty, had been replaced: After much head scratching and supply line Cll (2,200pF, 16V), C12 (330pF, 16V), checking I came to K7605, a choke in the C14, C15 (both 1,000pF, 16V), C16, C18 SCL/TSG input at pin 13. It's a surface - (both 470pF, 10V) and C36 (1,000pF, 16V). mounted device that's located under the B.F. main board, and was missing - it must have dropped off when I unsoldered the faulty Philips VR675 (Turbo deck) pack. The part number is VLP0153. R.B. If you tried to play after rewinding back to the start all you got was the top half of the Philips VR700/800 series We welcome fault reports from readers screen blanked out and the bottom half all The repair note with this machine said "no snow. Then, after a couple of seconds, the - payment for each fault is made after signal processing". Its mechanics worked, machine would turn off. The cause of the and the fluorescent display reacted correctly publication. See page 489 for details of problem was poor braking action, which led to commands, but there were no scart or RF where and how to send reports. to a large build up of tape on the supply outputs. With these machines it's possible to spool. As a result the supply spool didn't remove the mechanism and motherboard (or turn in play and the VCR switched off. MoBo as Philips calls it) complete. The

I,)2 June 2003 TELEVISION ribbon leads to the power supply and the the effects: C37 (10pF, 16V) produced Philips VR231/05 front panel are long enough for the sync crushing while C5 (4.7pF, 25V) and This machine was dead following a machine to be operated in this state and C26 (lpF, 50V) were responsible for the power cut. Checks in the power supply for fault diagnosis to be carried out. patterning. These electrolytics are of the showed that C2114 (47pF, 25V) and I found that the switched 5V supplies same type, red in colour. C2201 (47pF, 50V) had both failed. The were both missing, because the FET Two others of the same type are machine came to life, with good results, switch Tr7323 was incorrectly biased. employed on this board, C91 and C92 when replacements had been fitted. J.F. This in turn was because the 33V supply (both 0.47µF, 50V), so these were also was missing. It comes from a series replaced as a precaution. I have found Ferguson FV305V regulator on the plug-in power supply that these very small -value electrolytic This VCR had very poor picture search, unit. The cause of the problem was that capacitors (i.e. less than 1pF) are rather deteriorating as the search speed was R3193 (68k52) was open -circuit. It unreliable. RS Components stocks a increased. In addition the machine tended provides the current for the 33V referenceuseful range of polyester capacitors that to shut down momentarily when loading zener diode in this regulator. So there had are compact and ideal as replacements. I or unloading. been no need to remove the works after suggest fitting the stock code 118-016 The capacitors on the secondary side of all! P.D. type (0.47pF, 50V) here. P.D. the power supply all proved to be OK, but the outputs fluctuated wildly when loading JVC HRS7000 Philips VR572 (and many and during picture search. I carried our This machine displayed a confusing others) scope checks, which were inconclusive, in mixture of patterning, unstable sync and The power supply was dead though 320V the power supply - then the machine shut loss of colour/colour banding (similar in was present across C2318. I replaced down completely. The voltages on the appearance to the effect of an unlocked items 7302 (2SK2750), 7303 (MC44608) secondary side of the power supply were chroma reference oscillator). This and 7300 (TCET1101G) but the power now all very low, and the oscillation on the occurred in both the playback and E -E supply still didn't work. When I read a primary side was of very low amplitude. modes. description of the power supply's Cold checks on the primary side of the As this is an S -VHS machine there's a operation I was given a clue to the cause power supply revealed that RP027 good deal of signal processing. But scope of the trouble. The voltage across C2310 (5.6kQ) had risen in value to 201(52. I checks showed that noise was (22pF, 50V) should rise to 13V, at which don't have a circuit diagram for this superimposed on the relevant output from point the IC should start up. In this case machine, so can't say what this resistor the Y/C panel, which is a separate board the voltage actually fell, from an initial does. But a replacement brought the mounted to the left of the motherboard. 4.5V. The cause was my favourite, a machine back to perfect working order.

The following capacitors contributed to leaky diode, D6307 (BAV21). R.M. J.G. Test Case 486 Our new field technician Todd is coming along well, with a lotillumination was left in these areas. Can you guess what the of help from his predecessor Doc Colin and the workshop outcome of this one was? staff. The job and the customers don't change of course. Todd In fact that problem had not been resolved when Todd con- had ahead of him an afternoon of what might be called "mop - tinued on his round. He was heading for Tedder Terrace, the ups" - field jobs that arise as a result of previous repairs and last bastion of the Sixties 'rockers' in this town. While picking recent sales. This sort of thing seldom generates much rev- his way round a 750cc Yamaha on the front path, Todd was enue! met by a balding, tattooed gent. He was then ushered into the His first call was to a rather belligerent customer whose tiny living room, where a Sharp music centre, Model CD-X9E centre, Model MHC3700, had recently been no less, was surrounded and crowned with Beach Boys, repaired in the workshop. The problem had been in the power Hollies and similar CDs. The trouble with this outfit, bought supply, and had given rise to the dead -set symptom. Now that the previous week second-hand from our shop, was that it he had got his outfit home there was a quite different problem. skipped and jumped when playing discs, even those in good Sound was present, but it was very 'boorny' and lacking in tre-condition with no surface blemishes. ble response in both channels. With some notes the speakers Todd got access to the OPU lens and cleaned it carefully rattled, coughed and buzzed. Adjustment of the tone control, a with his little cotton buds and special fluid from Sony. All to graphic equaliser in fact, didn't help much. Our request that no avail: the music still dropped out and jumped. It was then the outfit be returned to the workshop had received a flat discovered, quite by accident, that playback was perfectly all refusal, with a demand for a home call. What did Todd find? right when the machine was tipped back a few degrees. What And did he manage to levy a callout charge? ailed it? Todd didn't know, so this one was loaded on to the

Ten minutes' drive after that job brought Todd to site num- van. Three down, one to go . . . ber two on his schedule. This time he was confronted with a The last appointment that afternoon was with a dear old shining example of the latest plasma technology. It was shin- lady whose Philips TV set had just been serviced in our work- ing too much in fact. The complaint was that the black parts ofshop. It had been collected and taken back by a kindly neigh- the picture weren't black - and that at £3,000 they certainly bour. Todd found that it was connected by a scart lead to a should be! This was true, even at low brightness settings. It VCR that shared its stand. On its return it would no longer was forcibly pointed out that with the previous CRT -type set auto -switch to AV when tape playback was requested, though the darkest parts of the picture were truly black, whereas they all was well if the AV mode was selected using the remote - were now a foggy grey. As the menu -set brightness was control unit. What do you make of that? reduced, the dark parts of the picture slipped away. But some For the solutions, turn to page 505.

TELEVISION June 2003 493 A few days later he brought the set to my shop, having replaced the items mentioned above. When it was switched on the standby LED flashed orange but nothing else happened. I hadn't come across this problem before, and found that the HT supply was low at 63V instead of 125V. To cut a long story short, he hadn't removed the insulating washer from the SMR4020 chip. Samsung supply a hybrid device as the replacement, and the instructions tell you not to fit the insulating washer. The new device has to touch the heatsink. He had obtained the replacement from a dubious source and had not received a modification sheet. Unfortunately I hadn't noticed the washer, and wasted quite a lot of time checking components. M.D. Thomson 443/Combi Model 21CB26VN This set had been bought at an auction of returned electrical goods and looked quite new. It had obviously received previous attention - given away by the poor soldering. The field output chip IF01, the TV FAULTFINDING chopper FET TP20 and the zener diode connected to its gate had all been replaced. The power supply was running, but the set Reports from Fidelity WSTV7028N wouldn't switch on. (11AK19-8A chassis) I loaded the HT supply with a 100W Michael Dranfield The report said there was a width problem bulb and switched the set on. It now with this set, which is fitted with a Vestel worked all right, including the video Philip Salkeld chassis. It's not an uncommon fault with section, so clearly the cause of the trouble this chassis, and is usually caused by a was in the power supply. I figured, not Serge Mojsejcik dry -joint. Sure enough a blackened dry - having the manual, that if the chopper FET joint was present at C630 (0.27pF). This had gone short-circuit a high voltage James Grant was far from being the end of the story would have been applied to its gate, which however. When the dry -joint had been was presumably why the gate protection Steve Hague attended to there was excessive width and zener diode had had to be replaced. EW bowing. The usual cause is a short- Tracing back from the gate I came across a Gary Laidler circuit EW diode modulator driver 1000 surface -mounted resistor, RP531, transistor, Q603. This device (BUK444) that was open -circuit. A replacement cured Philip Laws and was found to be leaky, but a replacement the fault.M.D. made no difference. Eugene Trundle The cause of the problem took a while Ferguson D14R (TX805 to find but, with the aid of my digital chassis) inductance meter from Peak Electronics, I This set was dead. I expected to find that found that it was the EW loading coil, one of the 681(52 start-up resistors was which measured just 3pH. A replacement open -circuit, but they were all OK. When I from a scrap set measured 16mH, so the reconnected the set to the mains supply it original one clearly had shorted turns - yet came on! I decided to replace the back and it looked perfect.M.D. put the set on soak test, but when the back was refitted the set was tripping on/off. Samsung CI5079T (SCT11B The cause of the trouble was traced to dry - chassis) joints at the field output chip IF01.M.D. A dealer friend of mine rang up for help with this set, as I'm a Samsung dealer. He Daewoo GB14H1 N had found a blackened fuse and the Here's a warning with these TV/video We welcome fault reports from SMR4020 chopper chip short-circuit, and combi units. After completing a repair on readers - payment for each fault is wanted to know whether anything else the VCR side I reassembled the unit and made after publiation. See page should be replaced? I told him to replace found that video playback produced a 489 for details of where and how the HIS0169C hybrid chopper controller snowy raster with no sound. The cause of to send reports. chip HC801 and the R2KN avalanche the problem was traced to incorrect diode DZ801 across the HT supply as well. plug/socket connections. The socket to

4' )4 June 2003 TELEVISION which the speaker is connected is the same V30011968); Q801 (part no. V30001386); set into the service mode by pressing as the one marked 'set AGC' near the C860 (part no. V30000107); D892 and standby, i, 5, vol+ and TV. This disables tuner. Normal operation was restored onceD896 (both type BA159); R805 and R852 the software protection, and the set will the plugs had been reversed. Fortunately (both 3352, 0.5W); and F801 (2.5A anti - come on with Tr- on the screen. Now no damage had been done. M.D. surge). You can also expect the press 0, 8 on the remote -control unit (i.e. BU2508AF line output transistor to be TT08). This will clear the error buffer, but Toshiba 28W23B (11AK37 short-circuit. P.S. the geometry settings will remain. chassis) Another common fault with these sets It should have been possible to deal with Ferguson T68NB (TX92 is failure of the LOPT. This gives the this set's problem during a straightforwardchassis) same error 2 flashing. So, if you have tried field call. The complaint was that the This set was stuck in standby. To cut a to switch the set on in the service mode picture was too low on the screen - you long story short, the on/off switch at the but it still won't come on, suspect the couldn't see the Fastext colours. I found front of the set also acts as the standby transformer. To confirm this diagnosis, that the usual procedure, pressing the blue switch. It wasn't latching. Replacements measure the voltage at the collector of Fastext button followed by 4 7 2 5, didn't can be obtained from CHS under code no. Q606 in the protection circuit while work. When I returned to the workshop 20102AG. P.S. switching the mains supply on. If it rises and located the manual I found the service to 11V, the LOFT is faulty. Once you adjustments but not how to get into the Sharp 66FW-53H (DA5OW have replaced the transformer the voltage service mode, so a phone call to Toshiba chassis) at the collector of Q606 should remain at was required. The procedure is to press We've had a number of these sets in with OV, but the set still won't come on the menu button then 4 7 2 5. For this strange faults. This one worked fine for because the error code remains in the particular adjustment press the green about twenty minutes after which the EEPROM. Enter TT08 in the service Fastext button to get into geometry, select contrast level kept stepping down until the mode, as described above, and everything VP1 (vertical position) then adjust in the picture was grey. The fault was also should be OK. S.M. usual way. P.S. present with teletext, hence my feeling that it could be a video output fault. I Beko 12220 (10.2 chassis) Sharp 51DT-25H decided to replace the TEA5101B RGB The customer complained that the front The customer's complaint was that there output chip IC1801 on the CRT base buttons sometimes didn't work. I replaced were lines across the screen when this set panel, and was delighted to find that this all thirteen, but the fault was still present. was switched on from cold. Sure enough cured the problem. P.S. I then noticed that the mains on -off switch there was line tearing. So out came the is of the same infamous type used in older hairdryer and freezer. With patience the Toshiba VTV14025B Grundig sets, where momentary contacts cause of the fault was traced to C604 This combi unit kept on destroying its often go leaky causing the no -sound fault. (220pF, 10y). I fitted a replacement and 2SD2627LS line output transistor, Q406. Once the switch had been replaced the when the set was tried the following day When I re -ordered the device it came with front buttons behaved as they should. all was well. P.S. a kit, part no. BZ510036. In addition to S.M. replacing the transistor you have to Philips 21PT4457/05 (L01.2EE change C417 and C438, using the Philips 14TVCR240/05 chassis) 1,000pF, 500V capacitors supplied. P.S. I've had several of these ...ombi units with When the set was first switched on there the same fault, sound OK but no picture was no red in the display then it went to Okishi N2818W (no line drive). In most cases the cure has standby. This very much suggested a (PT92 chassis) been to replace the BC637-16 line driver faulty tube, but before ordering a This set was dead with the power supply transistor Q7584, which goes open -circuit. replacement I decided to carry out some tripping. I found that the BU508AF line On one occasion the cause was R3584 checks on the CRT base panel. As a result output transistor was short-circuit and (47Q) in the supply to Q7584 going open - I discovered that R3316 (68Q, 0.5W) was RV38 (2.2Q) was burnt. The usual cause circuit, and on another the cause was open -circuit and Tr7311 (BF422) was of this is dry -joints in the line output D6581 (UGO6B, use a 1N4148) between short-circuit emitter -to -base. P.S. stage, but not this time. The cause was the base and emitter of Q7584 being CD08, which was open -circuit. Its value leaky. It seems that the line driver circuit Bush 3472NTX depends on the model, being either 680nF is the weak spot in this chassis. S.M. I've mentioned line output transformer or 470nF (250V). S.M. arcing problems with this model before. Toshiba 28W93B (C7SS When ordering the replacement by model Sony KV28WS2U (BE3D chassis) number it's important to quote the numberchassis) This set was stuck in standby with the red on the little white label on the side of the There have been a few reports where one LED on. I found that the HT was only transformer as well. In this set the number of these sets has been stuck in standby 43V (should be 125V). The error amplifier was 13525006. You can get replacements with the LED flashing error 2, the cure circuit for regulation is in the HIC1016 from CHS. P.S. being to replace the EEPROM. If you do hybrid chip IC801. Replacement of this IC this you will spend about half an hour restored normal operation. S.M. Toshiba 28W23B (11AK37 removing the screening can, replacing the chassis) chip and putting the screening back, then Grundig CUC7301/3 chassis It's becoming quite common to find that an hour setting up the geometry for each A blown power supply is usually caused one of these sets has gone off with a bang, screen mode. There's an easier way that by a dry -joint at C669 in the snubber destroying a number of components in the takes less than a minute, and you don't network. You can obtain a repair kit from power supply. The items that will have to even have to remove the back. SEME or CHS. With a set that came in be replaced are IC800 (part no. While the LED is still flashing, put the recently however the power supply had

TELEVISION June 2003 495 blown but I couldn't see the usual dry - short-circuit. As it's no longer available, Another TEA2031A and a coil (SEME joint. When a repair kit had been fitted Thomson supply a kit. This consists of an part no. TPAR2343) restored normal and the set was switched on it blew STV9379F chip, a 2.1V zener diode and aoperation. P.L. straight away. The culprit turned out to be 3.9k0 resistor. I've found that if the zener C626 (47µF, 385V), which was open - diode supplied is fitted there's a peculiar Bush BTV17 circuit. It's the reservoir capacitor for the band of non -linearity across the lower I've had several of these sets, and their mains bridge rectifier. This capacitor is part of the screen. It varies with picture Matsui clones, stuck in standby. A not supplied with the kit. content. The solution is to fit a 3.9V zenermodification kit (part no. I subsequently received a phone call diode instead. S.H. BTV17MODKIT), which consists of a from a fellow engineer who had the same small plug-in PCB and full instructions, problem - blowing the repair kit - and Goodmans 286NS/05 (Philips normally restores a set to full working suggested that he checked the main L6.3AA chassis) order. I would however recommend reservoir capacitor. He later confirmed The fault symptom with this big set was obtaining a service manual and checking that this item had been open -circuit. In his severe EW bowing. I've had a number of that all the option bytes are set correctly set the value was 100pF (385V). So it Philips sets with faulty capacitors in the before the unit is returned to the customer. looks as if this is becoming a common line output stage, so I carried out some P.L. problem. The Grundig repair kits should checks here. Sure enough C2913 (390nF, be upgraded. S.M. 250) read just 2.7pF when checked with a JVC AV29SX1EK (JA chassis) capacitance meter. A replacement cured The reported symptom was no sound. Toshiba 2151TB (C4ER chassis) the problem. You'll find this capacitor on Scope checks showed that good audio If one of these sets trips off after about the small stand-up sub -panel. G.L. entered the Dolby PCB but nothing left it. two -three seconds, check the HT voltage. Further checks revealed that L and R The reading should be 115V. With this setBush 2871NTX (11AK19 signals were present up to the TDA7315D the HT rose to 150V. The cause was chassis) chip IC401. Amongst other things this C817 (22µF, 100V), which was almost This set was tripping. I decided to carry rather expensive surface -mounted IC is open -circuit. J.G. out some cold checks, as it usually pays responsible for volume control. But a off with this chassis. There's a group of replacement made no difference. As the Goodmans GD2880D three UF5402 rectifier diodes (D814/5/6) IC is I2C-controlled, I suspected the (Thomson TX92F chassis) on the secondary side of the chopper EEPROM IC703. After replacing it (part This set would sometimes revert to transformer, one of which was short- no. AT24C0429SX1EK) and carrying out standby, maybe every few minutes, then circuit. It had damaged the board. G.L. a full set-up I was rewarded with excellent work normally for several days. A quick sound and pictures. P.L. check for dry joints in the power supply Amstrad CTV3121N showed that CP13, in the snubber This set produced a blank raster when the Goodmans W322NS network, had a hairline crack around the setting of the Al control was advanced, This widescreen set's power supply was joint. Resoldering it cured the problem, and the red LED at the front didn't light pumping. It didn't take long to establish but there was no picture. The heater up. I was about to start checking the that the line output transistor was short- supply pin at the CRT base was very outputs on the secondary side of the powercircuit. As I didn't have a service manual I badly dry -jointed, as were the rest of the supply when I noticed a slight brown markremoved the dead transistor, connected a pins around the CRT base. A good on R22 (0.220), which turned out to be 60W bulb across the HT supply and resolder job all round finally got the set open -circuit. I could find no reason for its monitored the line drive. All was well, but working and ready for collection. J.G. failure, and a long soak test after fitting a a new transistor failed immediately. I replacement proved that all was now well. decided to check the 15nF, 2kV flyback Hitachi C2146TN G.L. tuning capacitor and found that one leg The fault with this set was horizontal had no solder. How the set had worked as striations across the top third of the Sharp C3720H (14A long as it had is a mystery. P.L. picture. A check on the supplies to the chassis) field output chip showed that they were This set started up, the LED went green, Alba CTV5984 OK, with no ripple. The drive waveform then almost straight away turned back to This set's screen was bright green with was also OK. It looked as if the cause of red. After that the set remained in standby. flyback lines. A check at the CRT's green the trouble could be ringing in the scan Fortunately we've had this fault before. I cathode showed that the voltage was very coils, and a check with the circuit diagram went straight to R521 (3.90) which is nextlow. The cause was the TDA6108JF RGB showed that a damping resistor, R611 to the LOPT. It's in the 24V supply for the output chip IC901. E.T. (270Q, 0.5W), is connected across them. field output chip IC501. G.L. It's partly hidden behind the plastic frame Matsui TVR18OR that supports the PCB, but turned out to Mitsubishi CT25A5STX A puzzling failure to come out of standby be badly dry -jointed at one end. (Euro 14SF chassis) (this combi unit had a rental videotape Resoldering it cured the fault. J.G. This set came in with field collapse and trapped inside!) can be caused by a circuit protector Z55I blown. The faulty/corrupt 24C04-6 EEPROM chip, Ferguson B68N (ICC8 chassis) AN5521 field output chip was innocent IC1099. It's available at a reasonable price This set was apparently dead, but I found however. Cold checks revealed that as a Phoenix kit, MODKIT37, from that the power supply would start up IC5E1 (TEA2031A) on the EW sub - Grandata. briefly at switch on then shut down in the module was short-circuit. But its The same fault can occur with the protection mode. I've had this fault replacement lasted for only a few Matsui Model 2080 and various Alba, before, so I went straight to the minutes. The culprit was the EW loading Bush, Decca/Tatung and Orion models.

TDA8178FS field output chip which was coil L555, which had shorted turns. E.T.

496 June 2003 TELEVISION THE WORLDS LARGEST RANGE OF VIDEO SENDERS at www.videosender.net

Get your DG -200 & DG -220 DigiSender"" DigiSender TM The UKs number 1 video sender products now... .1 GETSSKY®,NTL®ORTELEWEST® TOANOTHER TV For retail sales please contact Ni100% WIRE -FREE AND SIMPLE TO INSTALL your nearest stockist including all Argos stores and leading Ni STUNNINGPICTURE AND HI -Fl STEREO SOUND electrical retailers.

TRANSMITS THROUGH WALLS AND CEILINGS Installers please contact CPC or Parnell for sales. Ni USE YOUR SKY®,VCR, OR DVD REMOTE CONTROL innovation... The revolutionary DigiConnectorTM To become an authorised \I EXPANDABLE WITH ADDITIONAL RECEIVERS (DG-20RX) unique to the DigiSenderTM, means stockist or for export enquiries you don't need any spare SCART please open an account on-line Ni AVAILABLE IN SINGLE (DG -200)AND TWIN RX PACKS (DG -220) sockets on your digibox. at www.easylife.co.uk.

For general info call: 01424 813222 DG-10DE DigiEyeTM The Intelligent Remote Extender

Ni WORKS WITHNTL® & TELEWEST®DIGITAL CABLE REMOTES

"...picture and sound COMPATIBLE WITH SKY® REMOTES quality is just as good on the second TRANSMITSIRDA & RC5REMOTECONTROL SIGNALS TV" Satellite TV Europe 16 DIGITAL CHANNELS

ADD ADDITIONAL TRANSMITTERS FOR EXTRA ROOMS "I tested the product and it's so good I'm not giving it back!" Digital Spy DV -200 PCSenderTM The PC to TV Wireless Video Sender

GET IMAGES AND SOUND FROM YOUR PC ONTO YOUR TV

WATCH DVD MOVIES FROM YOUR PC ON YOUR TV

CHECK ON YOUR KIDS SURFING THE NET

GETINTERNET MOVIES AND RADIO ONTO YOUR TV & HI-FI

NO NEED TO OPEN YOUR PC OR PURCHASE A TV OUT CARD

igiSender the wirefree video system HUGE RANGE OF ACCESSORIES AVAILABLE!

DG-20RX DigiSender' Receiver MODO1PIS DigiSender" UHF Aerial Convertor DigiSender. DigiConnector, and all DG-20TX DigiSender" Transmitter SCTO3 DigiSender" SCART Breakout associated logos are trademarks of DGR-01 DigiSender'" Remote Control DG-20TXR DigiSender" Transmitter wlRemote El Security & Communications Ltd To reserve your web site space telephone Tel: 020 8722 6028Fax: 020 8722 6096 SERVICEE -MAILS [email protected]

&RHO; ELECTRONIC. Full e -commerce site with over 1500 ::11111 0 I\ I/II 11111.11'1M r. 1[231a.I Me. I 1.1.eh SFr.. I Coot..kap. I Sm. us products with in -stock quantities!! We supply everything associated with Digital/Analogue W.01116 la D

SANYO Cricklewood Electronics http://www.cricklewoodelectronics. Donberg Electronics Alban Electronics co.uk http://www.donberg.ie Cricklewood Electronics stock one of the http://www.donberg-electronics.com http://www.albanelectronics.co.uk widest ranges of components, especially Alban stocks, supplies and provides semiconductors including ICs, transistors, http://www.electronic-spare-parts.com technical support for a range of capacitors, resistors. all at competitive terrestrial/cable/satellite and analogue/ prices. As the leading distributor for the TV, digital TV equipment. PROMAX Video and Audio trade in Ireland, we (manufacturers electronic test equipment supply over 2000 shops & service dept including signal level meters, spectrum Charles Hyde & Son Ltd with Audio -Video and TV spares, analysers, BER/CSI/MER analysers for http://www.charleshyde.co.uk Semiconductors, Test Equipment, Service QPSK, QAM & COFDM, optical fibre Manuals, Remote Controls etc. At present light sources and power meters, 16:9 we stock over 35,000 different lines. test pattern generators), ALCAD We hold agencies for: Panasonic, (manufacturers of R.F. wide band and Sharp, Mitsubishi, Sanyo, Beko, Ersa, adjacent channel amplifiers, aerials for Muter, Diemen HR, Philex, PRF, Konig- MATV, SMATV & IRS systems) and electronics. We specialise in parts for all ANTARES (cascadeable multi -switches). continental sets and obsolete ALBAN has a complete after sales repair semiconductors. and calibration service that is fully supported by the manufacturers, in addition provides a free system design EURAS International Ltd service using only reliable high quality http://www.euras.co.uk/ components.

Al!trade Aerials & Satellite Ltd Search for both original and copy spare 13. k 03 _Veld http://www.alltrade.co.uk parts in our extensive database covering Akai, Alba, Bush, Ferguson, Goldstar, Leading distributor to the trade Hitachi, LG, Matsui, Nokia, Saisho, Sanyo,

Sony, Sharp, Thomson, Panasonic, Philips, iliEfFS2A Samsung, Tascam, Teac, Toshiba, Yamaha wren ri e.agynence

and many more. In addition huge ranges of soar Lasers, Lopts, Remote controls and ma= L LTIt A A) Igar, Semiconductors may be accessed. rim This website offers more than 900.000 TR. rm. wet.% ClICK MOW SC41LAMT M. WI. 01,19 tested repair tips for entertainment and communication electronics as well as security technology. Thousands of new repair information t;:' DELTA SkY WAD! YY each months. Discussion Forum, Tech -

498 June 2003 TELEVISION MY. wiftWassi I NonaProaucnt, Senna.Coffloa loco. EURAS 1/082.1

search by IC

rt 0.R

um. Alvta P.Alas

Chat and a valuable Pinboard System. Visit the site and apply for a free

30 day trial (no deposit required). %kart to the Swine Research wehaitot

J W Hardy Communications pettatia Geboitmeoebo http://www.iwhardy.co.uk to ...Po ereeto "". Mond. AU. 1.1616. 'Radars Call 44,0111.5 ROMA. 11(0 DU 7 0S8,, me AAA 1 1 OA .14 Email su ktirlosimincialksta WiegmlsideillAR 4 81161111 ElviliVIapiPAPAIntesse. a4 4, 4 4, 4.

CSAsolltlosela MMWafercards http://www.mmwafercards.com Smartcards and programmers for all Nww.,i-..j.....,.--rero rive fiAnt a. access -controlled applications. Incorporating www.satstore.co.uk instruments for the television industry, The Enthusiasts Satellite Store. including portable signal level meters Tel 01386 48731 Fax 01386 765875 and spectrum analysers for digital and R.F. Network Specialist. analogue RF signal measurements. Shop online - for R.F.network M.C.E.S. components. We supply a full range of http://www.mces.co.uk Televes TV, radio reception equipment to receive http://www.televes com analogue/digital signals from both The MCES site gives details of our terrestrial and satellite sources. We range of service including Tuners, Video provide a free planning service for your Heads, RF & IF Modules plus latest R.F. networks, MATV and SMATV etc prices offers. Televes Holderness Solutions Ltd Switch -it -on http://www.digisatsolutions.com http://www.switch-it-on.co.uk Suppliers of over 3000 lines of SWITCH41-0,140.1AL equipment to the aerial and satellite Urz-= f, Oyll. 4 trade. All major brands stocked from MEM MIMI RIM OEM coax plug to 1.8mtr + dishes. ,c,er V.I..101111.1.11snewbv11 Televes website was launched as an Irwin Electronics easier way to keep in contact with our http://www.irwinelectronics.co.uk DVD UPGRADES World-wide Network of Subsidiaries 1.01.0brfor Area peg. ear Awa ...... it. ma.** and Clients. This site is constantly ....Mg lalBrIca ii.sprie As Classic Distributors we complement updated with useful information/news our existing mail and trade counter :::4:"'ZIV107."7:"...'' plus you can download info on our fa,,gdeff business with our website. You can LOOM harraMaNIMIsx-rumMiusa.. range: TV Aerials & accessories,

Lam spep wunstevon tam order parts on-line quickly and easily. .VIPROOLICIS loot wear MAW Cellnere. Domestic and Distribution amplifiers, We intend to explore alternative ways Systems Equipment for DTT and of assisting engineers to run their We sell multi -region players to trade Analogue TV, Meters and much more. business successfully. and public, also tv, videos, hifi and 2. We design our own Transworld Satellites upgrades on dvd and we sell all spare http://www.transworldsatellites.co.uk To reserve your web site parts. All makes and most models space phone stocked. Fifteen years experience serving Reuben Gurunlian enthusiast hobbyist, broadcasters, trade, Swires Research complete range receivers, cams, Tel: 020 8722 6028 programmers, cars, dishes, motors. With http://www.swires.com Fax: 020 8722 6096 excellent technical support and friendly Swires Research produce high quality service. Telephone 01947 820999

TELEVISION June 2003 499 Sony STR-H100 This old-timer had an interesting though represented the time taken for a given simple problem. It failed to supply power point on the tape to travel between the to the accompanying CD and cassette erase and the record/playback heads. My units. This power is in the form of low - beloved test tape, which has the record tab voltage AC, which is carried by the removed, was being erased while the deck ribbon -type bus cable that interconnects was in the play mode! A quick rewind, the units. It's switched from standby by after which I put the tape back in the play - relay RY901. When the system -power only A deck, confirmed my worst fears. button was pressed there was a healthy A look at the circuit diagram, followed click from this relay, but its contacts by a few measurements, brought me to didn't pass anything. Q3302. This transistor is a driver for All became clear when I observed the Q3301, which switches the supply for the back of the PCB while pressing the power bias oscillator. Q3302 was leaky. As a button. A small spark could be seen at one result Q3301 was permanently on, of the relay pins. On closer inspection I enabling the bias/erase oscillator. A saw that there was a cracked joint at one replacement transistor corrected this of the relay's coil pins. What was situation. Unfortunately Sugar, Sugar, by happening was this. When the relay was the Archies, now has permanent holes in driven it initially energised, giving the it. G.D. deceptive click. Once the relay had drawn enough current to pull -in however the Sony TA-S7AV AUDIO cracked joint went bad. It became so high - This brand-new amplifier, which is part of resistance that the relay immediately a four -piece stacking system, had no dropped back out, but too quickly to be right -channel surround -sound output. The heard. simple (for a change!) cause was that a FAULTS The repair consisted of cleaning up the pin in CN113 had been bent when the pin and the pad, then applying fresh plug had been inserted. Repair consisted Reports from solder. After that the whole system came of carefully straightening the pin followed by plug reinsertion. G.D. Geoff Darby to life. G.D. Chris Bowers Sanyo DC-F280U Sony MHC-EX7 system This unit arrived from the dealer with no This music system consists of four units, J.S Ogilvie and screws in its case. He had accepted it froman ST-EX10 tuner, a CDP-EX10 CD his customer in this state, albeit player, a TC-EX10 cassette deck and a John Woodgate reluctantly, but told me that the problem TA-EX7 amplifier. When everything was was straightforward - it wouldn't play connected together and powered there was CDs. The owner had apparently removed a set of flashing zeros in the tuner display, the cover to see if he could clean the laser. indicating an unset clock, and light from When he couldn't find it he had gone no the standby LED on the amplifier. When farther with his attempt at a kitchen -table the on/off switch was operated the repair. standby LED went out, the source select These machines almost never need a LED for 'tuner' came on and, after five new laser, a simple clean and general seconds, there was a healthy click from deck service being all that's required to the speaker protection relay. This was the restore reliable playing. A few plates and sum total of the activity. The cassette bits have to be removed from the deck to deck and CD player remained dead, while gain access to the laser. As expected, the the only life from the tuner was its lens was very dusty. A clean and flashing zeros. The clock could be set to lubrication job got the CD player section the correct time however. going again. My immediate suspicion was that The job ticket also said "check all something was blocking the system functions". I began with the tuner, which interconnect (AU) bus. This was quickly was OK. Then I went on to tape deck A, confirmed by scope checks at the AU in which is bi-directional, play only. This and AU out pins, 27 and 30, of IC101 on was also OK. When the test tape was put the amplifier's front panel PCB. I in the uni-directional, play/record deck B disconnected the other three units from however the machine produced sound for the amplifier, then checked again for We welcome fault reports from about half a second then fell silent. activity on the AU out line when the readers - payment for each fault is How very odd I thought, then tried source select switch was rotated. There again. The result was the same. Several was now a data burst at each selection. made after publiation. See page attempts later the reason for the short When I tried reconnecting units in turn, 489 for details of where and how burst of music followed by silence the bus hung up when either the tuner or to send reports. dawned on me. The half second of sound the CD player was connected. With just

>On June 2003 TELEVISION the cassette deck connected, there were Sony TA-VE100 4V). If they have leaked, clean the PCB data bursts on the AU out line at the The problem with this unit was that it and check for any corrosion. appropriate times. If source select was setwould switch off intermittently. Replacement of these three capacitors to say tuner then play was pressed on the Inspection inside revealed the cause: dry - usually clears the problem. J.S.O. deck, the amplifier correctly switched joints at connector CN505 on the small over to 'tape 1', proving that the cassette power switchboard on the front panel. Sharp CD-BA1700H deck could send data correctly and that There was no further trouble once the If 'protected' shows in the display, the amplifier could receive it correctly. pins had been resoldered. C.B. disconnect the STK402-040N output IC I turned my attention to the tuner. A then switch on again. If the display is look at the circuit diagrani showed that Sony MI -R55 now OK and everything works, replace the bus data arrives at pin 36 of IC201, This MiniDisc recorder would start to the IC. It's also advisable to check the the system microcontroller chip, via record when the charge button was speakers for any damage. J.S.O. D281. This point is also connected to pressed. I checked around the record chassis via Q281, which is labelled switch S805 with a resistance meter and Goodmans S4475 `switch' on the circuit diagram. It's an found that it was faulty. The solution was If this music centre has no display npn transistor, and was short-circuit. to replace it with the new improved type, illumination, check C113 (220µF, 25V) When a replacement had been fitted the part no. 1-771-331-51, whose terminals and C114 (470/4F, 16V). They usually tuner could be connected to the bus are gold -coloured. look a bit cooked. Also check ZD102 without causing any problems. The tuner For future service reference it's a good (12V), R112 (1k0) and Q105 then came out of standby when the idea to mark the new switch with a black (2SD882Y) and replace as necessary. system was powered, and could be tuned dot in the centre, to distinguish it from the J.S.O. and worked correctly. former type. C.B. This brought me finally to the CD PioneerPD8700 player. I looked at the circuit diagram to Sony MI -R91 This also applies to any PDM series CD see if there was a similar arrangement to This MiniDisc recorder would show the players. If they skip through CDs 1-6 the the one in the tuner. In this case the bus word 'protected' on the LCD screen, no fault is usually that the lens on the optical signal is routed via D601 and R631 to therecording or editing being possible. A block has fallen off. If the customer BS in pin, 47, of the system close inspection inside, around the protect hasn't opened the unit up first you will microcontroller chip IC601. D602 is detection switch, with a MiniDisc inside usually find the lens, which can be connected between the bus line and the unit led me to suspect that the switch refitted with a couple of spots of glue chassis. This diode was short-circuit. Pin wasn't being pressed in correctly. A (not superglue, as this will turn the lens 42 of IC601, BS out, is connected to the phone call to Sony technical provided the white). I've done this with a number of bus via Q601, which is labelled 'buffer'. solution: replace the 'battery case assy' these music centres and players over the It was leaky base -to -emitter and open - with the new improved type, part no. X- years and never had one back - touch circuit base -to -collector. A new transistor 4952-043-5. Normal operation was wood! J.S.O. and diode enabled the CD player to be restored once this had been done. C.B. reconnected, completing the repair. G.D. Sony MDS-JE520 Yamaha CRX-M5 This MiniDisc recorder kept failing with Sony HCD-ED1/CMT-ED1 The fault card that accompanied this a disc locked inside and an error message This unit wouldn't read discs. I inspected CD/tuner/amplifier said "keeps skipping that varied. It was usually E13 or E14. the optical pickup and spindle motor tracks". When I removed the CD deck to Sometimes the slider timing had jumped carefully and found that there was a fault check the optical block I found that the out of lock, and sometimes the shutter - in the spindle motor, or M101 (base drive shaft was a bit sloppy. On closer opening spring had been displaced as a outsert), part no. X-4950-343-1. A inspection I saw that a small piece had result of over -enthusiastic disc insertion hairline crack had developed in the black broken off the clear plastic cover which - the machine gets hard use from a local plastic disc plate. As a result it had retains the drive motor and holds the disc jockey. moved down the motor's shaft and the shaft assembly. As a result the drive shaft I found that the 'spring (shutter) leaf', laser couldn't focus. Replacement of the moved back and forth. item 225 on page 82 of the manual, can spindle motor, a quick job, restored I found a light -tension spring, be carefully soldered into place where the normal operation. C.B. approximately 5mm in diameter and small hole in it fits over the partially - 10mm long, to fit over the gear on the sheared boss on the 'holder assembly', Sony HCD-CP100 shaft, then refitted the cover and checked item 223. But even so the unit is unlikely There was an intermittent display fault the tension on the shaft. This cured the to be reliable. with this unit. One fully -lit seven - problem. I suspect that it might become a The 'timing diagram' on page 28 of segment display number would show common fault with these decks. J.S.O. the manual is almost incomprehensible. after twenty minutes. I took a quick look When you replace the slider and holder inside, equipped with a meter, a heat gun Sony HCD-H650M assembly, the spigot on the big white and a can of freezer, and found that the The fault was a chattering noise on cam -gear should be as far forward as it cause of the trouble was the main loading a CD and 'no disc' coming up. will go (the gear doesn't rotate all the microcontroller chip IC802. A Before you decide to try a new optical way round), the slider should be as far replacement restored correct LCD block, remove the PCB from the base of forward as it will go, and the holder operation. The chip is glued as well as the unit and check the three surface - should be as far back inside the slider as

being soldered. C.B. mounted capacitors C105/6/7 (47µF, it will go. J.W.

TELEVISION June 2003 301 ' $: - at. - ire gauche. Debit symbol. 3464. EEC 213, PID Video: 12 CAMEROON 3712L 11133 SW Photo 1: Cameroon TV from Atlantic Bird 3 at 5°W. Note retuning information at the bottom of the screen.

00:23:54 3785 R RFO FEEDS 8E13SW Photo 2: RFO feeds caption from Atlantic Bird 3, with timed countdown to the next feed.

Sony VTXS750U This digibox was dead with no light from the standby LED. The power supply was SATELLITENOTEBOOK running, but the output voltages were all low and the VIPER50 chopper control Reports from Amstrad DRX200 chip quickly became very hot. The cause Michael Dranfield This digibox was stuck in standby with the of the problem was the ED9B 12V supply LNB supply at 17V. When the box has rectifier diode D809, which was short- John Coombes booted up correctly and is ready to go it circuit. M.D. should start to search for listings with the Christopher Holland LNB supply at 13V. The fact that the LNB Amstrad DRX 1 00 supply was at 17V meant that it was not The horizontally -polarised channels all and going to come on. The cure was to replace produced the 'no satellite signal received' the 74LVTH16244 48 -pin, surface - message. The vertically -polarised channels Hugh Cocks mounted bus buffer chip U601. M.D. were OK, and apart from this the digibox worked normally. A check on the LNB supply showed that it was stuck at 13V. The cause of the fault was the DTC114 Table 1: Latest digital channel additions at 28.2°E polarity -switching transistor Q100. M.D.

Channel and EPG Sat TP Frequency GHz/pol

Bengali Radio EB D7S 11.585/H Calvary Chapel Radio EB D7S 11.585/H CapitalFM 95.8(925) 2B 32 12.324/V Century FM (924) 2B 32 12.324/V Flaunt (469) 2D 52 10.877/V GlobeCast Test card EB DIOS 11.642/V Ideal World 2A 22 12.129/V Scuzz (471) 2D 52 10.877/V The Amplifier (473) 2D 52 10.877N

TP = transponder. 2A, 2B, 2D = Astra 2A, 2B, 2D. EB = Eurobird. Photo 3: The TV Gabon morning test card via Atlantic Bird 3 is often blurred.

502 June 2003 TELEVISION Table 2: Digital transmissions available via Atlantic Bird 3 (5°W) C -band capacity

Frequency GHz/pol SR/FEC Services

3-712/LH CP 3,464 2/3 Cameroon TV plus Radio Cameroon 3.727/RHCP 29,940 7/8 Reuters Newsfeeds*, Serte Test colour bars 3-784/RHCP 27,000 5/6 Canal Plus Guadeloupe feeds*, Muslim TV, GlobeCast/Sert test card (see Photo 6), feeds for RFO, and the following radio stations: Surise Radio, France Culture, France Inter, Bleucity, Radio France International and the time signal in French 4.023/RHCP 2,894 3/4 KTN Kenya* 4.152/LHCP 12,800 7/8 Tele Africa, TV Gabon 1, TV Gabon 2 plus radio stations Africa No. 1 and Gabon Radio 1 *Scrambled signals.

Humax IRCi-5400 C -band reception Cameroon TV recently moved from At switch on this receiver's display Atlantic Bird 3 recently took over from NSS-7, as listed last month: Photo 1 blinked but otherwise remained dead. Telecom C at 5°W. For many years shows retuning information rolling across Voltage checks showed that most of the Telecom 2C had provided C -band links the bottom of the screen. outputs on the secondary side of the between France and French-speaking The multiplex at 3.784GHz is a little power supply were too high. I noticed thatterritories in Africa and South America, in weaker than others. But, in addition to C9 on the underside of the PCB was dry - addition to its better known French TV carrying scrambled Canal Plus signals, it jointed, but this was not the cause of the services in Ku band. has interesting feeds for RFO TV stations problem. C9 had in fact burst its rubber seal, and as a result had been pulled out of the PCB. It provides bias for the Table 3: Some Middle Eastnewsfeeds that can be received KIA431A adjustable zener diode IC I, which drives the regulation feedback Frequency GHz/pol SR/FEC Description (where available) optocoupler. Hence the high voltages on the secondary side of the circuit. Eutelsat W1 at 10°E Sometimes replacement of C9, along with R21 (100Q) and the 30V, 400mW 10.959/V 4,165 5/6 APTN Baghdad (see Photo 7) zener diode ZD3, is all that's required in 10.965/V 4,165 5/6 APTN Doha this situation. For 100 per cent reliability 10.971N 4,165 5/6 APTN however fit the satellite kit available from 10.982/V 4,165 5/6 APTN SatCure. M.D. 10.987/V 4,165 5/6 APTN Qatar 1 10.993/V 4,165 5/6 APTN Qatar 2 Grundig GDS200 11.009/V 4,165 5/6 APTN Kuwait 1 If freeze framing occurs, go to the service 11.015/V 4,165 5/6 APTN Kuwait 2 mode and check the signal strength. If this 11-041/V 3,125 3/4 IHA Baghdad is OK, check the signal quality. Should 11.047/V 3,125 3/4 IHA Baghdad this be very low, check the ESR of C17 11.062/V 6,600 3/4 IHA (470pF, 10V) and C12 (1,000pF, 16V). 11.072/V 3,125 3/4 J.C. 11.163N 3,255 5/6 Fox News (see Photo 8) 11.172/V 3,255 5/6 Fox News Digital channel update 11.177/V 3,255 5/6 Centcom Qatar The latest channel additions at 28.2°E are 11.181/V 3,125 3/4 IHA Baghdad listed in Table 1. Where allocated, the 11.185/V 3,125 3/4 IHA Baghdad EPG number is shown in brackets after 11.582/V 3,780 5/6 the channel name. 12.732/V 5,632 3/4 APTN Relax with a book radio (EPG no. 905) 12.739/V 5,632 3/4 APTN has ceasedtransmissions.C.H. Eutelsat W2 at16°E

11.106/H 5,632 3/4 CBS Kuwait 11.189/H 5,632 3/4 CBS Newspath (see Photo 9) 11.677N 9,765 3/4 ABC (see Photo 10), CBS Jordan 11.686/V 3,255 3/4 12.508*/H 5,632 3/4 Various feeds 12.692/H 5,632 3/4 ABC Kuwait

*Various feeds between 12.508-12.567/H. APTN = Associated Press News Service. Ihlas News Agency (based in Turkey). Photo 4: Centcom, Qatar colour bars via IHA = Eutelsat W1 (10°E).

TELEVISION June 2003 503 France Telecom

Photo 6: GlobeCast/Serte test card via Atlantic Bird 3. Photo 5: Centcom colour bars with superimposed live video analyser display.

CHANNEL FOUR NEWS

TCR 23:59:48:12

Photo 7: APTN Channel 4 news Baghdad via Eutelsat W1. Photo 8: Fox News via Eutelsat W1.

KUWAIT L 'OE ABC NEWS AMMAN

CBS NEWSPEITH 11189H 16E 1167711 16E

Photo 9: CBS Newspath via Eutelsat W2. Photo 10: ABC News Amman via Eutelsat W2.

and often transmits live programmes from Africa No. 1 logo at the bottom left of the 10°E and W2 at 16°E. With MPEG 4:2:2 the main French TV networks. The screen. H.C. a normal satellite receiver will produce caption style shown in Photo 2 is often the sound but the video will appear as displayed, with an on -screen timed Middle East newsfeeds random square blocks. countdown to the next feed. In recent times there has been a massive The Centcom base in Qatar often Gabon TV via the Tele Africa increase in newsfeeds from the Middle transmitted colour bars, see Photo 4. At multiplex at 4.152GHz is of variable East. Though a few are now scrambled, times these had some residual noise. One quality. In the mornings the test card (see and some broadcasters now use MPEG morning engineers spent some time Photo 3) is often blurred, then the 4:2:2 instead of MPEG 4:2:0, many adjusting the signal: a live video analyser programming goes into black and white! signals remain for the enthusiast. Table 3 display was superimposed on top of the

All channels in this multiplex have the lists a small sample from Eutelsat W1 at colour bars, see Photo 5. H.C.

504 June 2003 TELEVISION Solutions to Test Case 486 TELEVISION INDEX & DIRECTORY 2003 - see page 493 - Plus hard -copy index and reprints service

The first thing to report is that not a bean changed hands Here's the essential repair information you need! The during Todd's calls that afternoon! The problem with Television Index & Directory 2003, in CD-ROM form, the Sony music centre was that the customer had contains the text of nearly 15,000 high quality fault reports connected the speakers incorrectly: they were linked to on TVs, VCRs, Camcorders, DVD players, Monitors, Satellite the lower (red/black) terminals, which are marked 'bass TV units, Audio equipment and CD players, searchable by unit', instead of the upper (blue/black) ones. Todd was thrown out when he suggested a call -out charge. make and model, plus the text of 180 Test Cases and over The plasma TV set's inability to reproduce true black 200 major servicing articles, from fifteen years of Television is, unfortunately, a characteristic of this particular magazine. It also contains a full fifteen year index of make/model. Its price, despite being three grand, is at Television, a Spares Guide, a directory of Trade and the lower end of the range for such sets. The final Professional Organisations, an International TV Standards upshot was that the customer, when he returned to the guide, a satellite TV Channel Finder, a TV transmitter list shop, was persuaded to part with another £500 in and a compendium of internet resources for service exchange for an upgrade to a Panasonic model. These engineers. The software is quick and easy to use, and runs sets have much better rendering of the blacks in the on any PC with Windows 95, 98, ME, NT, XP or 2000. picture. Yamaha man, who had bought the second-hand Sharp music centre, got his money back. The fault lay in the Television Index & Directory 2003 CD-ROM, £199 optical unit, which perhaps had a loose component. Repair - replacement of the optical unit - would have Television Index & Directory 2003 CD-ROM upgrade, £46 (to cost more than the unit had been sold for. It's been qualify for this upgrade you need to have purchased a replaced with a new (at £60!) job from Tesco. previous version of the Television Index on floppy disk or Finally the Philips TV set with an AV problem. The on CD-ROM) scart plug had been inserted in the wrong socket on the Panasonic VCR. It should have been fitted in the top A six-month update of the index and fault reports will be (scart 1) port. avail -able in May 2003. If you wish to take advantage of this, £10 should be added to your order. NEXT MONTH IN TELEVISION Television Index only, 1988-2002, £36 Nokia notes Nokia's monitors come with all sorts of badge names on Television Index only upgrade from previous versions, £16 them. Many were used by Dell. Since Nokia ceased production of display products in Finland, servicing Hard -copy indexes of Television magazine are available back-up has been difficult to obtain. Next month Donald for Volumes 38 (1988) to 52 (2002) at £3.50 per volume. M. Henry starts a two-part article that provides repair guidance for a number of Nokia monitor models. Reprints of articles from Television back to 1988 are also The Pace Twin Digital TV recorder available, at the flat rate of £3.50 per article - you can order Hard -disk recorders have been on the market for some through our web site, or write to the address below. time. This year Pace released the Twin Digital TV recoder, the first personal video recorder designed for The above prices include UK postage and VAT where use with digital terrestrial TV. The Twin's features applicable. Add an extra £1 postage for non -UK EC orders, include a 20GB hard drive, live pause, TV and radio or £5 for non -EC overseas orders, although Channel Island recording and an electronic programme guide. Peter residents do not need to add any extra postage. Cheques Brough provides an overview. should be made payable to SoftCopy Ltd. Access, Visa or MasterCard Credit Cards are accepted. Allow up to 28 days From tape to DVD via a PC for delivery (UK). DVD is today's video recording format of choice and, with tape becoming obsolete, there's an increasing demand for videotaped material to be transferred to SoftCopy Limited, 1 Vineries Close, Cheltenham, DVD. This is not as simple asitsounds. Colin GL53 ONU, UK McCormick discusses the hardware and software required and provides guidance on how to go about it. Telephone 01242 241 455, Fax 01242 241 468 e-mail: [email protected] web site: The Smart Show http://www.softcopy.co.uk The Smart Show is the UK opportunity for major consumer electronics manufacturers to present their latest products and technology. George Cole reports.

Published on the third Wednesday of each month by Highbury Business Communications, Anne Boleyn House, 9-13 Ewell Road, Cheam, Surrey SM3 8BZ. High - bury Business Communications is a division of Highbury Communications PLC. Filmsetting by G&E Al Parkway, Southgate Way, Orton Southgate, Peter- borough PE2 6YN. Printed in England by Polestar (Colchester) Ltd., Newcomen Way, Severalls Industrial Park, Colchester, Essex C04 4TG. Distributed by Comag, Tavistock Road, West Drayton, Middlesex UB7 7GE (tel. 01895 444 055). Sole Agents for Australia and New Zealand, Gordon and Gotch (Asia) Ltd.; South Africa, Central News Agency Ltd. Television is sold subject to the following conditions, namely that it shall not, without the written consent of thePublish- ers first having been given, be lent, resold, hired out or otherwise disposed by way of Trade at more than the recommended selling priceshown on the cover, exclud- ing Eire where the selling price is subject to currency exchange fluctuations and VAT, and that it shall not be lent, resold, hired or otherwisedisposed of in a mutilated condition or in any unauthorised cover by way of Trade or affixed to or as part of any publication or advertising, literary or pictorialmatter whatsoever.

June 2003 TELEVISION 505 WHATA LIFE!

A further welcome batch of emails brings all manner of subjects to the fore, including customer problems and humour, cat's -whisker and other early radio receivers, camerawork and filmmaking, and the decline in broadcasting standards. Also possible problems with use of the Astra 2D satellite. Donald Bullock's monthly commentary

During the past month I've received what am I paying you my maintenance device. Its base was about the size of a another batch of emails from payments for?" she bawled. domino. Above this at one end stood a readers of the magazine. All very Dave had something to say about the tiny 'cup' of crystal atop a one -inch welcome - keep it up! My email BBC's adverts too. More on this later. support. It faced a similar -sized support address is included at the end of this at the other end. This held the 'cat's article. A PlayStation whisker', which in practice was about Charles Coultas tells me that he's an five turns of light copper wire formed Water electronics engineer but not in our by winding it round say a thin One email came from my old friend trade. "In my spare time I fiddle with matchstick then gently stretching it to a and fellow contributor Steve Beeching. customers' , fitting short, spring -like shape. Its 'business As regular readers will know, Steve's naughty mod chips and the like." end' was bent to protrude from the expertise is wide-ranging. His easy -to - Naughty mod chips? I've obviously centre of the winding and snipped to read articles often cover technical led a very sheltered life! form a point that was gently spring - matters of some complexity. But he "I fitted one for a chap" he continued loaded to touch and remained in manages to put it over in a painless "and away he tripped, a happy chappy. contact with the crystal. way. These days he specialises in Six months later he was back." I made my own detectors, paying camcorder repairs. He's great "It won't read any more, any sixpence for the chunk of crystal company, with a warm sense of ideas why?" he asked. which, as Ray says, was often galena. humour and a very sharp wit. He It worked when Charles fitted a new The crystal set was a simple affair, mentioned the following story about optical unit, but was a bit touchy. A consisting of a coil of varnished or someone who phoned to ask him for an week later his client was back again. cotton -covered wire (I used 28 SWG estimate for putting his full-sized "I was cleaning the inside of the copper wire), an 0.0050F variable camcorder right. PlayStation with the compressed air capacitor (the `tuner'), the crystal "What's the trouble with it?" asked line at work when I accidentally detector, a headphone -type earpiece (I Steve. dropped a screw in it" he said. "There made my own) and a couple of fixed - "Water ingress" said the voice at the was a flash and a loud bang and now it value capacitors. Crystal sets were other end of the line. won't even switch on." strictly TRF of course, so a coil of "How much water?" countered Steve. It transpired that the screw had different inductance was required for "I can't be sure until tomorrow" said dropped into the power supply, across each programme frequency you wanted the caller. "That's when the diver is the legs of the chopper MOSFET. to receive. Deciding which due to recover it from the boating Fortunately a new fuse and MOSFET programmes I wanted, and working out lake." put matters right. the coil winding details, was a lot of "I haven't seen him for a while now" the fun in building a crystal set. The Maintenance Charles concluded. well-off could buy ready -tuned, Dave Hookings, a dealer, told me about factory -made 'basketwork' coils of a woman who is a member of his TV Cat's -whisker receivers course. I eventually managed to pick up maintenance scheme. She complained Another regular contributor, Ray a few here and there. that she couldn't stand the chocolate Porter, recalls reading The Beginner's To receive a programme you had to advertisements in the middle of her Guide to Radio by F.J. Camm, who touch the whisker point on to a 'lucky' favourite programme, Coronation started this magazine off after founding spot on the crystal. Sometimes several Street, and asked him to modify her set Practical Wireless in the early Thirties. different spots had to be tried before to remove them. Ray well remembers the cat's -whisker anything was heard and, as Ray When he told her he couldn't do this radio detector, which was an early formmentions, once you did there was a she became very angry indeed. "So of semiconductor junction -rectifier compulsion to try a different spot again

506 June 2003 TELEVISION in the hope of getting better and conversations proceed. carbon copies of each other. louder reception. Everyone knows that modern As Dave says: "It's so frustrating Crystal sets didn't require a filmmaking is, technically to see these whiz -kids breeze in, battery. They used the voltage speaking, in most cases sheer muck everything up then move on induced by the transmission. rubbish in comparison with the to their next lucrative job, leaving Despite this primitive arrangement, black -and -white filming of the their debris behind them. sound quality could be excellent. A Forties and even the Thirties. In good aerial and an earth connection this connection I recall that a short Astra 2D were required. One of the first while back a modern film studio Dave also refers to the BBC's plan, things we did, as kids, when we desperately wanted to recreate which he reckons is half-baked, to camped out on our local hill in some of the Busby Berkeley give Sky the elbow and move to summer was to climb the highest effects, in particular of filming Astra 2D. "Do they," he asks, tree to suspend an aerial wire from symmetrically -grouped dancers "expect us to invest in a cardless it, so that we could listen to the from above and making them satellite receiver that won't get ITV programmes picked up by my appear as ever-changing flower or Channels 4 and 5? Or has some home-made crystal sets. patterns. They failed! Couldn't do secret arrangement been made to Ray also remembers those sets it!! Yet the studios of those days carry these channels as well? We which, instead of a mains dropper, did it routinely, using the limited ought to know - it's due to happen used a length of resistance wire thatequipment of the then young film any time now. Once Sky has been was built into a fat and bulky mains industry. dispensed with, the average viewer lead. This lowered the supply And I recently learnt why so is going to be faced with more sufficiently to light up the series - many present-day TV dramas are expense and trouble to get what he connected valve heaters. The so hard and irritating to follow. It's already has at present! And how problems that mains -lead not because of an assumption that narrow is that beam? We are on the `droppers' caused were many - present-day viewers are all coarse 60/45 divide here in West Wales. particularly when a tidy-minded set riff-raff with no standards. No, it's Do we have to prepare for when owner shortened the mains lead or because the standard fade-out and our customers start complaining replaced it with ordinary twin wire. fade-in techniques between scenes that their BBC programmes are I can still recall a lady who have largely been abandoned: the breaking up? And what are we then brought her set in after her husband new whiz kids consider them to be expected to do?" had changed the lead. She old-fashioned and cumbersome. That's an interesting question. I explained that it was their bedroom read the other day that ITV, which set, which they used to lull them offBetween programmes already uses the low -powered Astra to sleep at night. "But it was This brings me back to Dave 2D satellite, suffers from dead hopeless last night" she Hooking's email. He writes as spots in some parts of the UK. complained, "I had to turn it off follows. "Between programmes straight away. We just couldn't get the BBC is now more aggravating Advice to the BBC to sleep. Not only was it too loud, than the commercial people, with How sad that the BBC, which was but it lit up the room like daylight!" its succession of adverts for its created with such high ideals by His handwork cost them another own programmes and products. I the late lamented Lord Reith, has mains lead plus a complete set of wonder what percentage of so- fallen to such an extent that it now valves. called programme time this takes looks up to, and tries to emulate, up, and how much cheaper the the commercial services. In my Camerawork Corporation's programming bill is earliest days in the trade we used to In commenting on my moans and as a result?" refer to those, jocularly, as groans about the BBC's falling This seems to me to be a valid "Gutter". standards, Ray mentions the too - point. I think that the ITV 24 -hour My advice to the BBC, which I clever camerawork we nowadays News programmes are excellent, know won't be heeded, is to sack have to tolerate in plays and crisper than those of the BBC, but every single one of its whiz kids, dramas. He refers to cameras going as with all commercial TV they are every one of its gabbling disc - round in circles while debased by the intrusive, tasteless jockey oddballs, and every one of photographing an ongoing ads. I sometimes select ITV News, those shrill -voiced women who conversation between two people only to switch to the BBC when seem to have overrun the place. say sat at a table. "This makes the the ads crash in (do you remember Once that has been done the ever-changing background that there used to be a break, so Corporation could revert to the continuously sweep past" he that we could dash to the kitchen limited number of high -quality complains, "and distracts me from or wherever?). And what do I get programmes for which it was so the conversation. Is this nonsense when I switch to the BBC? More well known that the very term BBC all in the name of art?" adverts! was respected throughout the I don't think so, Ray. I think it's world. another case of precocious Channel trouble youngsters trying to impress us by I have a dislike of much of the Where to contact me using technology simply because sports coverage, which I used to be Those of you who want to email me it's there. Let's hope they don't able to avoid by switching channels can do so at learn to fly. If they do, instead of whenever the sporty oddballs came [email protected] flying off and leaving us in peace on with their breathless spiel. But We also have a website at they'll hover around and we'll be what do we now encounter? A www.bullock-bros.com expected to study the tops of the different set of sporty oddballs! Look forward to hearing from actors' heads as their The channels now seem to be just you!

TELEVISION June 2003 507 Digital Tuner SERVICE Repairs. ENGINEERS REQUIRED Amstrad DRX 100 tuner £12.50 plus VAT Busy Electrical Retailer, established over 30 years, Pace "ZIF" tuner £14.95 plus VAT seeks service personnel due to expansion in Grundig tuner £21.00 plus VAT ILFORD. Quantity discounts available Grundig Power Supply repairs £16.00 Service Engineer Must hold an electronics servicing qualification, have plus VAT at least 2 years experience in servicing TVs, VCRs, Digital set top box repairs from £35.00 DVDs, HiFi and Camcorders. Must be computer plus VAT literate and have a flexible attitude. For more infomation see our web site Service Engineer/Administrator Candidates must have at least 2 years experience in www.mces.co.uk electronic servicing including TVs, VCRs, DVD, HiFi and Camcorders. Must be computer literate and have M.C.E.S. Digital good administration skills. 15 Lostock Road Davyhulme, PRC can offer an excellent package to the right people. Manchester M41 OES Send current CV stating your current salary details to: E-mail: salesamces.co.uk Personnel Manager, PRC HiFi & Video Ltd, phone:0161 746 8037 78/80 Cranbrook Road, ILFORD, Essex IG1 4NH Telephone: 0208 514 6188 fax:0161 746 8136 Mobile: 07768 844100

Campion ONLINE SHOPPING CHEAPER AND EASIER Electronics Ltd. www.elclondon.co.uk SUPPLIERS OF QUALITY TV, VIDEO SPARES AND ELECTRICAL ITEMS EX -RENTAL TV'S and video equipment to independent retailers across the UK and EIRE. FREE DELIVERY SERVICE to most areas of UK WORLDWIDE EXPORT SERVICE Large stock of TVs suitable for export Experts in UHF/VHF conversion Visit our large warehouse at:

Units 1 & 2 Tenat Works, Worcester Rd, Kidderminster, ELC EAST LONDON COMPONENTS Worc, DY10 1JR 63PLASHETGROVE, LONDON E6lAD. TWO MINUTES WALK FROM UPTON PARK TUBE STATION Tel (2 Lines) (01562) 746000 TEL: 020 8472 4871 FAX: 020 8503 5926 Just 20 miles from Birmingham City Centre E-mail: [email protected]

508 June 2003 TELEVISION QUALITY svi/tais -gea EX -RENTAL TV'S Have you got our pocket sized parts catalogue? ALL WORKING Sanyo, Samsung, Toshiba, v Run by T.V. engineers for T.V. Engineers. v You speak to experienced engineers with J.v.c. in-depth knowledge of TV/Video trade. 20" Fastext 130.00 v CLASSIC' distributors and trade counter. v We stock parts that engineers advise 21" Fastext & Nicam from 140.00 us to stock,with regular updates. 25" Fastext 150.00 v Free or low £1,00 p&p on orders means: 25" Nicam 160.00 YOU CAN EASILY AFFORD TO ORDER MORE THAN ONCE A DAY!!! 28" Fastext & Nicam from 170.00 V Visa, Mastercard, Switch and Accounts. 24" & 28" Silver & Black Wide Screen from 1100.00 Get our Summer spares catalogue Purley TV, Wycliffe Road, FREE with orders over ten pounds. Purley, Surrey Just ring Mike on 0114273 9622 Tel: 01737 555514/07947 478832 or 0208 654 2810/07961 431212 Irwin Opposite Purley Station "The television engineer's wholesaler" On-line you can place orders at www.lrwinelectronics.co.uk

WATCH SLIDES ON TV FRUSTRATED! MAKE VIDEOS OF Looking for ICs TRANSISTORS YOUR SLIDES A phone call to us could get a result. We offer an extensive DIGITISE YOUR range and with a World-wide SLIDES database at our fingertips, we are able (using a video capture card) to source even more. We specialise in "Liesgang diatv" automatic slide viewer with built in high quality colour TV camera. It has a composite video output to a phono plug (SCART & BNC adaptors are available). They devices with the following prefix are in very good condition with few signs of use. For further details see www.diatv.co.uk £91.91+ vat = £108.00 (to name but a few). Board cameras all with 512x582 pixels 8.5mm 1/3 inch sensor and composite video out. 2N 2SA 2SB 2SC 2SD 2P 2SJ 2SK 3N 3SK 4N 6N 17 40 AD All need to be housed in your own enclosure and have fragile exposed surface mount ADC AN AM AY BA BC BD BDT BDV BDW BDX BF parts. They all require a power supply of between 10 and 12v DC 150mA. BFR BFS BFT BFW BFX BFY BLY BLX BS BR BRX BRY BS 47MIR size 60x36x27mm with 6 infra red LEDs (gives the same illumination as a small BSS BSV BSW BSX BT BTA BTB BRW BU BUK BUT BUV torch but is not visible to the human eye) £37.00 + vat = £43.48 30MP size 32x32x14mm spy camera with a fixed focus pin hole lens for hiding behind a BUW BUX BUY BUZ CA CD DX CXA DAC DG DM DS very small hole £35.00 + vat = £41.13 DTA DTC GL GM HA HCF HD HEF ICL ICM IRF J KA 40MC size 39x38x27mm camera for' mount lens these give a much sharper image KIA L LA LB LC LD LF LM M M5M MA MAB MAX MB than with the smaller lenses £32.00 + vat =£37.60 MC MDA J MJE MJF MM MN MPS MPSA MPSH MPSU Economy C mount lenses all fixed focus & fixed iris MRF NJM NE OM OP PA PAL PIC PN RC S SAA SAB VSL1220F 12mm F1.6 12x15 degrees viewing angle £15.97 + vat =£18.76 SAD SAJ SAS SDA SG SI SL SN SO STA STK STR STRD £17.65 + vat =£20.74 STRM STRS SV1 T TA TAA TAG TBA TC TCA TDA TDB VSL4022F 4mm F1.22 63x47 degrees viewing angle TEA TIC TIP TIPL TEA TL TLC TMP TMS TPU U UA VSL6022F 6mm F1.22 42x32 degrees viewing angle £19.05 + vat =£22.38 UAA UC UDN ULN UM UPA UPC UPD VN X XR Z ZN VSL8020F 8mm F1.22 32x24 degrees viewing angle £19.90 + vat =£23.38 ZTX +many others Better quality C Mount lenses VSL1614F 16mm F1.6 30x24 degrees viewing angle £26.43 + vat =£31.06 We can also offer equivalents (at customers' risk). VWL813M 8mm F1.3 with iris 56x42 degrees viewing angle £77.45 + vat =£91.00 A LARGE RANGE OF ELECTRONIC COMPONENTS ON 1206 surface mount resistors E12 values 10 ohm to 1M ohm 100 of 1 value £1.00 + vat OUR CD ROM - LIST AVAILABLE ON REQUEST 1000 of 1 value £5.00 + vat Mail, phone, Fax, Credit Card orders &callers welcome. 866 battery pack originally intended to be used with an orbitel mobile telephoneit contains10 1.6Ahsub C batteries Connect] (42x22dia the size usually used in cordless screwdrivers etc.) VISA the pack is new and unused and can be broken open quite easily £7.46+vat = £8.77 Cricklewood Electronics Ltd Please add 1.66 + vat --. £1.95 postage & packing per order 40-42 Cricklewood Broadway, London NW2 3ET JPG ELECTRONICS Tel: 020 8452 0161 Fax: 020 8208 1441 ShawsRow, Old Road, Chesterfield, S40 2RB www.cricklewoodelectronics.co.uk Tel 01246 211202 Fax 01246 550959 MastercardNisa/Switch E-mail: [email protected] Callers welcome 9:30 a.m .to 5:30 p.m. Monday to Saturday

TELEVISION June 2003 509 CGR-U41/0 SKY DIGITAL OrSr APPROVED REPAIR CENTRE www.cgr-uk.com We sell all types of equipment - new and refurbished. We repair all types of equipment including Echontar/Humax etc DigiBox Repairs 1 off 150 + VAT (No Fix - No Fee) 3 off 140 + carriage 5 off .135 The South'sNo.1 stockist of Refurbished Boxes brand nameelectrical goods Widescreen TV's £139.00 Early DigiBoxes 1 off 1150inc VAT Digital Camcorders £135.00 Later DigiBoxes 1 off 1199of two 40% Combi Microwave E. 45.00 New DigiBoxes 1 off 1299Discounts Food Processors £ 29.00 on quantities Audio Systems £ 32.00 Video Players £ 52.00 Satellite & Digital Services Ltd DVD Players £ 75.00 Howard Avenue, Barnstaple Lawnmowers £ 38.00 All products are plus VAT & covered by warranty. Devon EX32 8QA Tel: 0845 644 1889 CALL SALES ON 01271 325888 Coronation Buildings, 6 Ham Road, Worthing

Synthesized satellite cable and TV field strength meter with *PERIFELEC panoramic reception on 14 cm (5,5') screen and digital conomicevices carriers measurement. PO Box 73, Oakengates TF2 8WR Tel 44 (0)1952 273130 Fax +044 (0)1952 405478 MC 30 A Spectrum Analyser Complete microprocessor and IspL51 logic control. Continuous frequencies from 46 to 860 MHz and from 920 t.telirn to 2150 MHz on 4 bands. ClIrD11/11.CYD3 Selectable 4,1 and 0,2 MHz spectrum band -width, picture measurement 1 MHz. rit etIch Display of picture of selected synthesized channel. cpayufilcto FM (Radio) UV, IVO, I, D/KAC, MM TV standards and Ku and r@a_c.,,, C satellite standards. :, . ,_ ,..,,.., ...,3,,p7GriinocaaL:,,, Possibility of 32 programs memorized per frequency band.

Display (2 Lines of 16 characters). Range of measurement of signal strength from 20 to 120 SEMICCHMEOUCTORS depV, manual or automatic attenuator. alwier typos of Battery life about 1 hour 20 minutes, weight 5,8 Kg. ao 4, 0 0 0 Display of full -band and 4 possible expanded spectrums. tronsistors IC's Modem ske_ or aolvasionts stocks'. Channels and frequency plans of cable and TV standards memorized.

Frequency, signal strength in c113pV or bargraph, displayed on a digital display (2 lines of 16 characters). Some suppliers lust won't help.We will Voltage of remote power supply in 14v or 18v and 22 KHz in satellite DiSEq C18 v1.2 switching. work really hard to find those difficult We take your hassle The panoramic field strength meter MC30A combines in one instrument all the functions necessary for parts - Just ask and let our 'no holds barred' enquiry hound work for you.l I 1 installing and checking TV or satellite reception, both analogue and digital. The visualization of the spectrum and the picture allows the carrying out of all the necessary adjustments with this one instrument. The high - - - Cl rsspeciala I cs co lc cmoffers t the.--,-....-.., technology used in the MC30A allows a range of possibilities unheard of in a instrument in this price category BTJT11A ®S each BT3T11AF @cS10/0 each Lacuna Digital Satellite Meter NEW Lacuna Terrestrial BTJ508A OcV14 each Fully wired start lead 9 A custom designed, small Digital Meter lightweight ABS case, Small, lightweight custom designed for el slight i ol co ro Af'Cllier1C1C--- a. ; created with the terrestrial digital installations --- -y ea Li installer in mind iliu...t buy, illort: tIttirs oust... Identifies transmitter

BU208A X 5 75p eaTEA.2018A X 5 99p ea 0- BU5O8A X 5 79p eaU 3842 X 5 59p ea Meacsaurres ner7oniasle asUnentEthFi BU5O8AF X 5 85p ea CNX62A X 5 29p ea UHF / VHF BU508D X 5 89p ea S2000AF X 5 84p ea Anatouge and digital BUT11A X 5 29p ea TDA3653B X 5 55p ea measurement BUT11AF X 5 47p ea TDA3654X 5 82p ea Removable 'F' connector Philips type 1.2 volt Back up battery X 5 59p ea 4 line LCD with backlight Philips type 2.4 volt Back up battery X 5 120p ea Weight including batteries 6009 Scart - Scart lead 1.5m Fully wired X 2 89p ea 12v line power facility Positor PT37,TH98009 (White) X 5 59p ea SignaLstrength and Thom TX100 Chassis 110 DGR LOPTX each£11.24 BER will be displayed together Philips CP9O Chassis LOPTX each £11.63 lndetifies the chosen satellite Signal strengths and BER settings calibrated _ _ _-CII11C 1r40./l, cs--Ic callsoar. c-rara- facility for recalibration by distributor ',calm:- for-usucsas.r!yloll 1311-ic.,111-.1_ Removable 'F' connector Remember £1.50 post & handling LNB short circuit protection and LNB power All major credit cards accepted supply Compatible with all satellite transmissions www.iteleopeurt.coeuk and C band, DVB and DSS The eeh pane v he!. you kap looY apt= and ail,:el.a1=ITLViC.:411:24:1:::zrech by o on b, i emote conlioO, LOFT.etc Full catalogue of meters available. COASTAL AERIAL SUPPLIES Perifelec catalogue out NOW lease phone for ms Sole Import 120 tails. Unit X2, Rudford Industrial Estate. Ford, Arundel BNI8 OBD Distributors V cameras, monitors, switches Telephone: 0870 2641990Fax: 0870 264 1991 quads, multiplexers, the lot

510 June 2003 TELEVISION TUBES REMOTES NEW LOWER PRICES:- 14" Philips/Orion 34EAC, 34AGT, 34JLL £30 DIRECT 24" Philips widescreen W56ECK, W56ESF £160 All makes and models 24" Thomson widescreenW56EGV £160 Replacement and Originals remote 26" Panasonic standard66ECF £55 26" Philips standard 66EAK £75 controls available. 26" Thomson standard 66ECY, 66EDN, 66EHJ£55 mmAt a fraction of the costlm 28" Thomson widescreenW66EGV, W66EJU £85 Please contact for instant quote 28" LG widescreen W66QBD £85 28" Philips widescreen W66ECK, W66ESF £160 ROB or MARK 29" Philips standard 68ESF £135 Tel: 0800 0837037 32" Thomson widescreenW76EDX £120 32" Thomson widescreenW76EGV £245 E-mail: [email protected] 32" Philips widescreen W76ESF £245 Or check out our website and All prices plus VAT order on-line We also de -scratch tubes Website: www.remotesdirect.co.uk EXPRESS TV Also available a wide range of The Mill, Mill Lane, satellite equipment Rugeley, Staffs WS15 2JW And various other electronics!!! tti Tel: 01889 577600 Fax: 01889 575600

P.J. HILL TV. VCR. SPARESAILIFKIII FLYBACK TRANSFORMERS BY

ELDOR, OREGA, TERMAL, CLASSIC WELDEX 2003 WRDCOME I I.14 November 2003 ALSO BUDGET RANGE. Rsu.lbNim finte iiirir#N. ON Enquire by No's off old transformer & model No. For Akai, Akora, Alba, Aiwa, Bush, Beko, Daewoo, Ferguson, Formentii, Goodmans, Grundig, Hinari, ITT, JVC, Matsui, Net, Orion, Panasonic, Philips, Samsung, Sanyo, SEG, Sharp, Sony, Thomson, Tatung, Toshiba, etc

REMOTE CONTROL BY CLASSIC Weld cIass event At Weldex 2003 you will experience, first hand, the very latest products, services and Video heads & spares, CD Lasers, belts, mains technologies in welding, joining, cutting and fabrication. As the largest international switches, semi conductors, valves, switch mode show of its kind in the UK, Weldex 2003 represents a unique opportunity to make contact with some of the biggest and best names in the business, from all over the world. transformers (including Matsui 2196N) service kits, T/V, VCR & satellite resistors, capacitors, valves, Weidex 2003 is the event in the UK welding calendar Whether you are selling, buying, learning, or just staying in touch, Weldex 2003 is the tuners, triplers etc. place to do good business in the UK. So make a date to loin us at the NEC, ASK ABOUT OUR SERVICE MANUAL LIBRARY Birmingham, 11- 14 November 2003. FOR T/V VIDEO & MICROWAVE & AUDIO. Nichola Mitchel!: 441.0)1°S.[ /0 iOv,17. MOST CREDIT & DEBIT CARDS Karin Alifinp or Isobel Robert WEEXNAD/HHOIPG P.J.HILL ET NORTHWAY TRADING EST, NORTHWAY LANE, TEWKESBURY, American Welding Society GLOS, GL20 8JH, [classic TEL: 01684 296902 1MM CI DISTRIBUTOR FAx: 01684 294317

TELEVISION June 2003 '31 I I REPAIRS SERVICE DATA

Trade repairs to TVNCR CIRCUITS OPEN IWE DO NOT STOCK Sky digiboxes 6 DAYS AUDIO OR MONITOR Pace, Amstrad. Grundig, Panasonic, INFORMATION) (including Fluid Ingress). All makes repaired at a fair fixed price. TEL A.T.V. on PHONE 020-8722 6028 Scan Digital Services 0114285 4254 For details CTV Circuits from £5.00 FAX 020-8770 2016 Give Alan a ring on VCR Circuits from £7.00 Tel/Fax: 01633 25 40 50 CTV Manuals from £10.50 E -Mail: [email protected] VCR Manuals from £14.50 BUSINESS FOR SALE User instructions also available (P/Padd £2.50 to each order) FOR SALE SUPERB OFFER 419 LANGSETT ROAD TWO CRT SHEFFIELD S6 2LL FOR SALE TESTER/RESTORERS accent TV, VIDEO, ELECTRICAL FOR SALE MANUAL COLLECTIONS PURCHASED. SALES, SERVICE & RENTAL BK467 supplied with loads of bases - (POST 1995) Central High Street position in busy Mid - also BMR90 also loads of bases. TECHNIC Devon market town, established 1928. Large Great Value at £200 each ono (2 properties integrated) Sales Shop, big or £350 for pair. ANALOGUE AND Workshop and extensive Storage area. Private Fryerns parking and garage at rear, free street parking at Tel: Russell on 0208 8094866 front. 3 -bed Owner / Staff flat over one half, or 07961 195591 DIGITAL Service Circuit second flat (needs renovation) over other. T/O Information Diagrams last year £67k, giving 52% Gross, 40% Nett. CAMCORDER FES (Stock currently about £40k, can be reduced to suit). Huge expansion potential for younger REPAIRS blood, we are retiring, and offer the following: TV's, VCR's, SATELLITE Goodwill, Two Freehold Properties,SAV. Irwin LAP TOP REPAIRS CAMCORDERS, AUDIO & Full details and price on application: "I ho trios isiun engincer'N se hsdv}.rlor. Telephone:01363 772315(Business Hours) HI-FI's Telephone 0114 273 9622 Collection anywhere in Prices are from £5.50 + £2.75 P&P the UK. add a further £5.50 per item Summer Sale Special in the same order All makes, ultra fast note: some items priced individually FOR SALE Ferguson W7023U etc. Thomson 24WK23U etc service. we now supply universal tv/video remotes at competitive Widescreen LOPTX Phone: 01905 771025 prices EX RENTAL Pt no. 10608670PI Payment by credit card, PO or cheque www.accent-technic.co.uk Tel:Fax 01206 211570 ONLY £24.951. e-mail: [email protected] TVs, VCRs, o,, -her,,,,' Voce,,&ernb wmv. Invinelectronli, co. WI 2 The Lodge PORTABLES Easthorpe Green SERVICE DATA Marks Tey, Colchester Combi Washing LINEAGE C06 1HA SURPLUS SERVICE MANUALS FOR Machines, Fridge SALE, mostly originals. Tel: 01291-623086 SERVICE Freezers etc. with make/model. MANUALS NEED HELP NOW? For stock list call Have you ever turned away work Then ring the PROJECTOR for want of a Service Manual? Barry McDonald Have you ever bought a Service * ELECTRON TECHNICAL 01622 719313 SPARES Manual and never used it more HELPLINE * than once? Genuine help available to all or 07836 789528 Then why not join ... repairers of THE MANUALS LIBRARY VIDIKRON T.V. - V.C.R - SAT - AUDIO projector spare parts and For details and membership (Inc Valves) For a FREE consultation service information. application form write, Over 30 years experience and on how best to market phone or fax: vast data base your products/services to PROJECTSPARES HARVEY ELECTRONICS Tel: 01444 831769 43 Loop Road, Beachley, Chepstow, 0906 470 1706 a professional audience Mons, NP16 7HE contact REUBEN on Fax: 01444 831580 Calls cost 60p per minute E-mail: Tel: 01291 623086 Fax: 01291 628786 020 8722 6028 [email protected] Visa: Mastercard accepted Hours of Business Mon to Fri 9.00 am - 12.30pm : 2.15pm - 5.30pm Sat. Morn 9am - 12.30pm FOR SALE SERVICE INFO WANTED TV - VIDEO - AUDIO 171 HAREHILLS LANE, LEEDS LS8 30E Prices- any make/model BEST CASH in Tel: 0113 240 1114. Tel/Fax: 0113 240 7275. CTV s/man 10.00 Mobile: 07976 403134 VCR s/man 15.00 PRICES PAID ELECTRICS LIMITED Email: [email protected] CTV circs 5.00 FOR VALVES KT88, VCR circs 7.00 MANUFACTURERS GRADED PRODUCT PX4 AND MOST ALL PRICES PLUS VAT. ALL PRODUCTS FULLY GUARANTEED Other items POA AUDIO/OTHER PHILIPS 32PW6006 32" Widescreen, Nicam, FM Radio, 50HZ £289.00 All prices include p/p. PHILIPS 32PW6515 32" Widescreen, Real Flat, Virtual Dolby, 50HZ £299.00 Do not add any VAT TYPES. PHILIPS 28PW6816 28" Widescreen, Real Flat, V Dolby, 50HZ, Int DVD £299.00 Tel: 01403 784961 PHILIPS LX3000D DVD Player 5.1 Surround Sound System 200W RMS £129.00 AMTeI PHILIPS 14" TVNCR Combi from £84.00. PHILIPS 14" Portables tram £49.00 Huna, Billington ExportLtd PHILIPS VCR's from £44.00. PHILIPS Audio Systems from £39.00 Caithness KW1 4YL Sussex RH14 9EZ Further offers available please call for a price list. 01955 611313 Fax 01403 783519 Credit Cards Welcome. Next Day Delivery Email: [email protected] www.amtel.org.uk Visitors by appointment Automatic component identification (Inductor, Capacitor or Resistor).

Component value measurement.

Atlas LCR Passive Component Analyser (Model LCR40) Automatic test frequency selection (DC, lkHz, 15kHz or 200kHz).

"No other LCR is as easy as this!" Inductor DC resistance measurement.

Just clip on the test leads and press test. The Atlas LCR will Non-volatile probe compensation memory. automatically identify the type of component, apply the Detachable probes allowing use of optional appropriatetestlevel and frequency,displaythe test prods, SMT tweezers, etc...

component's value and more! Hands free mode with value hold. Probes are detachable too, so you can use the optional SMT tweezers for your tiny unmarked passives - fantastic. Inductance range: 1µH to 10H Capacitance range: 1pF to 10,000µF Resistance range: 10 to 2MQ Basic accuracy: 1% Test signals: 1V, 3mA max

Lots of £79 accessories fully inclusive I TK price available soon!

Automatic component identification NPN bipolar Check and Darlineton Pinout identification . identify Transistor gain measurement Diode Protect.ior semiconductor analyseryour semi's .MOSFET gate threshold measurement between C -E

PN junction characteristics measurement Resistor shunt between B -E Shorted Junction identification

Transistor leakage measurement Current eain Hfe=126 Just connect the part anyway round and press fully inclusive the button! Enhancement mo&:, Auto power on/off N -Ch MOSFET Supports: eshold Bipolar transistors, Darlington transistors, BLUE Diode protected transistors, mit. Resistor shunted transistors, Enhancement mode MOSFETs, Depletion mode MOSFETs, Junction FETs, TRANSISTOR Low power triacs and thyristors, ak Diodes and diode networks, o=11 enclosure colours may vary LEDs(+bicolours) Visitwww.peakelec.co.ukto download the data sheets, user guides and copies of independentAlso available from: (prices vary) reviews. You can pay usinga cheque.postal order, credit or debit card and even pay securely online. Please contactus for your volume requirements. Farnell ELECTRONICS Atlas House, Kiln Lane www.peakelec.co.uk Harpur Ind. Est., Buxton Derbyshire, SK17 9JL, [email protected] electronic designltd Tel. 01298 70012 Fax. 01298 70046 [-"AkPROIVIAX TELEVISION PROMAX SELECTED ITEMS FROM THE PROMAX TEST PATTERN GENERATORS RANGE OF TEST EQUIPMENT

VIDEO SOUND --1=emur--IsT ORE I-- ,C68 821.25MHz 89d130 PAL 8,0 18:9 Chrome ON NICAM Burst ON STEREO vEs Circle ON Left ON PTA ON Right ON [ [ SYNC Video INT Audio INT 000 SCARY Analogue and Digital Satellite Detector.

The new pattern -BO- generators GV 798 and GV 898 offer advanced features at realistic prices. PRODIG 1 They produce 16:9 and 4:3 Satellite Dish Installer's Meter formats, output level set in Does more than just BSkyB I 1dB steps, multistandard, I ' VITS, WSS, VPS, PDC, DIOITA LG ANALOGUE TV LEVEL METER I Chan 40 74.8 dBuV Teletext and much more. CO 09AIL SO. MINE GV 898 uses vestigal side 55.PU:, Ca3,1 band modulation. III=

PROCUG- III 41 II 11.-31 ENEEIr PRODIG 2 Analogue & Digital Aerial Meter PROMAX GV SERIES Measures digital channel power and C/N r r - Choice of 12 instruments 10.11-1. NICAM and Teletext 4:3 and 16:9 Formats Full field and VITS Computer Controlled Front panel memories Multi Standard, PAL, NTSC, SECAM MC 377+ Own Company Logo Computer Monitor testers Analogue & Digital, Satellite & Terrestrial Hand Held Models Measures channel power and C/N High Quality Construction Attractive Price Levels Full After Sales Service Available from Stock r , IIMMIIIEJIM omr-.--- .111111111 - ainimeacrooto Lfj ma - (2 (2 0 0 (20 Iehr PROLINK 3 + 4 SERIES FOR TELEVISION PATTERN GENERATORS, -4111.1111rrair Satelli e & Terrestrial, Analogue & Digital, THERE'S NO WIDER CHOICE THAN WITH PROMAX Spectrum Analyser with BER (optional on P3)

PROMAX TELECOMMUNICATIONS TEST EQUIPMENT (Alban: AE 767 Spectrum Analyser

ALBAN ELECTRONICS LIMITED rallINIIMISHIMIN11111111111111111111*

THE PROMAX SERVICE CENTRE ri%sem,. summe mmu CEL,Cm.-=i1 f 6 Caxton Centre, Porters Wood, St. Albans, Hertfordshire, AL3 6XT. g' ...... i.- TEL: 01727 832266 FAX: 01727 810546 WEB : www.albanelectronics.co.uk EMAIL : infogalbanelectronics.co.uk n SALES + SERVICE + CALIBRATION