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Repair tips  

Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair

MakeModelProblemSolutionAddedDate
 
Found: 711
Sharp51DT-25HLines across screen when coldC604 220u 10vplamensl14-09-2004
Sharp51DT-25H CA1Stuck in st/by with motorboating from spkrC712 220µ 16v in 10v supply almost o/cplamensl14-09-2004
Sharp51DT25HDead - no st/byR705 560k o/c, also replaced R704 560kplamensl14-09-2004
Sharp51DT25HGoing off tune picture blanks etcC715 470mfd 10v o/cplamensl14-09-2004
Sharp51DT25Hint blank raster, lack of height, off tuneFit D511 & 512 3v6 zeners in marked places next to IC201, fit D403 by plug K - replace link 122 in 5v supply with 12µ coil.plamensl14-09-2004
Sharp51DT25HInt lack of height or off tune when 1st sw on - ok at subsequent sw onSharp mod - add 3.6v zener between pin 63 IC201(cathode) & chassis; add another 3v6 zener pin 64 & chassis(cath to chip). Substitute link J122 with 12uH coil pt no VP-CF120K0000; Add 7v5 zener pin 30 (cath) & chassis. Check CRT final anode for cleanlinessplamensl14-09-2004
Sharp51FS51HAGC overload/off tune type faultTuner faultyplamensl14-09-2004
Sharp56FW-53HDead & E/W problemsLOPTr BUH515 leaky, C613 SH1010 - CHS dry jointed & o/c - cause of problem, L603 RCILP0286BMZZ, Q506 RHTX0151BMZZ(2SD2391Q) sm E/W Tr, R613 3k3 3w, D516 47v zenerplamensl14-09-2004
Sharp56FW-53H DA50WE/W faultyC613 560nF 250v o/c in LOP stageplamensl14-09-2004
Sharp56FW53HBlows LOPTr int at sw onC607 330µ in line driverplamensl14-09-2004
Sharp56FW53HDead - LOPTr s/cFit new BUH515, check for dry joints C613 & C607 330µ 10v hi esrplamensl14-09-2004
Sharp56FW53HLines of R, G & B at top of screen & pin cush dist at topNeed to set up NVM values for specific crt type obtained from Sharp Tech bulletins. Also may need to alter geometry settings in service mode.plamensl14-09-2004
Sharp56FW53HNo audioIC302 (TDA7480) l/h audio o/p Ic (about 8ukp from Seme) and two chokes connected to it L315/L316 (3.3microH) (about 1.50ukp packet of 5 from Farnell) were burnt to a crisp.After replacement I still had no l/h audio, found Q306 (2SC2412 sm) s/c in the +5v feed to the Ic (I used a BC847)plamensl14-09-2004
Sharp56FW53HService mode accessSwitch on with vol down & Ch up buttons pressed. The ch up/down & vol up/down buttons on the handset are used to alter values & each setting must be stored by pressing St/byplamensl14-09-2004
Sharp59CS-D8HVarious inc slow start up, Txt int appears, buzz on soundC714 1000µ 16v in 5v supplyplamensl14-09-2004
Sharp59CS03HAudio noise - intQ305/306plamensl14-09-2004
Sharp59CS03HDeadTDA8375A IF/video proc/tbase chip faulty IC201 (low res between pin 56 & Chassis)plamensl14-09-2004
Sharp59CS03HDead & whistlingQ306 2SA1797Q sm audio amp s/c - also check Q306, D301/2, D305 1N4933 & check for dry joints back of scan coil pcbplamensl14-09-2004
Sharp59CS03HField lin creeps up at bottomQ707 C33840 = BC338-40plamensl14-09-2004
Sharp59CS03HNo / int field collapseResolder L501 ( joints on body )plamensl14-09-2004
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