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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

MakeModelProblemSolutionDate
Found: 24
Nokia6630LINE DOWN RH SIDECHECK 470 mfd LT LINE14-09-04
Nokia6630 Core 2Blank raster with fback linesPin 2 LOPTx dry joint14-09-04

PhilipsL7.2E 21PT1663Reverts to st/by aft brief period (no pic)Prot mode operating - FOP chip IC7401 was s/c & R3449 1R ?w, R3451 2R2 1/3w o/c. Fit BZX79C51 zener across pins 4 & 5 of FOP chip (anode pin 4) to prevent chip damage14-09-04
Sharp4BSC DV6632Hburst of EHT then shuts downIC500 TDA8170 s/c R645 1R 1W o/c14-09-04
Sharp4BSC DV6632Hframe foldover at the topC505 100uF 40V14-09-04
Sharp4BSC DV6632Hline pulling, bent verticalsC623 4.7uF 50V next to Q603 regulator14-09-04
Sharp4BSC DV6632Hrepeated failure of LOPTrresolder scan coil connections14-09-04
Sharp4BSC DV6632Hvery faint colour lines on the topC501 VCEAGA1HW107M, C506 VCEAGA1VW107M leaky14-09-04
SharpBCTV-A DV6635HDead with burning smellC706 1n 2kv burnt14-09-04
SharpBCTV-A DV6635HE/W dist & onlt top half of field scanL604 15µ melted due to C607 0µ56 250v low cap14-09-04
SharpBCTV-A DV6635HE/W faultyTDA3850 field/EW o/p chip14-09-04
SharpBCTVA DV6635Dead - lop tr s/cdry joints scan coils, R619 & 632 39R ?w o/c - C619 0µ56 o/c14-09-04
SharpBCTVA DV6635Repeated failure of lop trDry joints at yoke end of scan coil connector or L60314-09-04
SharpBCTVA DV6635HNo soundmultiplexer IC303 HEF4053BP - can also be caused by corrupt eeprom14-09-04
SharpBCTVA DV6635HPIC FLICKERS DURING HIGH BRILL OR SUBTITLESINCREASE VALUE OF C2442 FROM 47nf TO 1mfd Sharp VCEAGA1HW105M ( 1mfd , 50v )14-09-04
SharpBCTVA DV6635HPic goes dark & disappears aft few minsScastle pulse to IC400 TDA4681 misshapen - FOP chip TDA8350Q faulty - pin 2 o/p 14-09-04
SharpBCTVA DV6635HT700 SWITCH MODE TRANSFORMER CHANGE LATER TYPE NOTT700 OLD TYPE Sharp RTRNZ0528BMZZ NEW TYPE Sharp RTRNZ0519BMZZ14-09-04
SharpDV6632Dead - when sw on from st/by led goes green for 5 secs then reverts to redprocessor IC800 MC44002 14-09-04
SharpDV6632INT BLOWING LINE O/P TRANSISTOR OR INT LINE COLLAPSECHECK FOR DRY JOINTS ON SCAN PCB ON CRT14-09-04
SharpDV6632HDead - chopper tr 2SD1546 s/cCheck dry joints in psu esp on Q603 & R710 100k 2w hi res & IC700 MC446022P2 shorted14-09-04
SharpDV6632HFB lines at top (R,G,B) & shaking pic with pullingC506 100µ 65v, C623 4µ7 100v14-09-04
SharpDV6632HRagged verts & E/W distC623 4µ7 63v in E/W cct by Q60314-09-04

SharpDV6632HShuts down completely aft Red then green LED briefly litField o/p chip TDA8170 & R645 1R 1w - check 3x100µ caps behind fop chip14-09-04
SharpDV6632HTrippingDry joints scan coil plug & leaky LOPTr BU508AF14-09-04
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