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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: 901
HitachiG8QDead apart from trippingTxt panel dis'd & trip stops - C93314-09-04
HitachiG8QDead- fuse blackenedCheck TH902 thermistor14-09-04

HitachiG8QDead or int start up/offStart up therm TH902 o/c14-09-04
HitachiG8QDead with blackened mains fuseMelted PVC tape from degaussing coils touching audio amps heatsink14-09-04
HitachiG8QDEAD WITH LINE DRIVER TURNED FULLY ON AND LED NOTCHECK AROUND IC1502 ( SAA1293 ) FOR ACTIVITY if none replace X1501 crystal14-09-04
HitachiG8QDiagonal bands of interference - esp in TxtC932 470µ 16v14-09-04
HitachiG8QDisplay corruptCheck Q1502/3/4/5 - Q1505 was leaky BC54814-09-04
HitachiG8QEEPROM keeps becoming corruptedDeguassing positor int arcing14-09-04
HitachiG8Qexcess brill / fb lines200v video supply missing - R720 2R0 o/c14-09-04
HitachiG8QEXCESSIVE WIDTH - NO E/W COECTIOND705 , C714 BYW96D AND 27nf14-09-04
HitachiG8QField collapseNo supply to IC601 FOP chip - R715 1R fusible o/c & chip u/s14-09-04
HitachiG8Qhorizontal lines appear when set is warmTuner goes thermally defective14-09-04
HitachiG8QHorizontal lines when warmed uptuner thermally defective14-09-04
HitachiG8QHT high at 165v & won't adjustZD941 ref diode BZV10 leaky14-09-04
HitachiG8QInt blank screen/snowy/flickeringRipple on 12v line caused by C932 1000µ corrupting micro14-09-04
HitachiG8QInt comes on into standby from cold.Thermister TH902.14-09-04
HitachiG8QInt corruption of stored data - all sigs lost & reverts to chan 05v supply to txt pcb int lost - coil on back of board in supply from 8v reg IC001 line was dry jointed14-09-04
HitachiG8QInt Crackle on soundReplace C1522 ( 1nF ) C460 ( 100nF ) C454 ( 22nF ) C453 ( 22nF )14-09-04
HitachiG8QINT CUTTING OUT AFTER REPAIR TO POWER SUPP.CHANGE R910 , C908 , VR901. SET POT TO 12 OCLOCK *******DISCHARGE C906 BEFORE ANY WORK*******14-09-04
HitachiG8QInt fails to start.TH902 THERMISTOR14-09-04
HitachiG8QInt loss of greenRGB o/p tr BF459 faulty - can use BF462 in lieu14-09-04
HitachiG8QInt st/byR718 51k hi res replaced - triggering crowbar thy14-09-04

HitachiG8QInt to start upTH90214-09-04
HitachiG8QInt tripR910 5R increased res - could be IC1501 micro14-09-04
HitachiG8QLack of syncQ2110 BC548B on txt pcb14-09-04
HitachiG8QLine hold lostIC431 M51551P on IF panel14-09-04
HitachiG8QMemory lostCheck for 3v at IC1502 MDA2062 memory chip & R1519 27k 1w14-09-04
HitachiG8QNarrow & Pic shift to right with weak syncTDA2579A & check R725 470k14-09-04
HitachiG8Qno eht & 12vsupply only 5vC933 2200µ 25v leaky14-09-04
HitachiG8QNo or only part of display showsCheck IC1501 SAA1293H by subst - if only part of display showing check R15060R1513 100R14-09-04
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