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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: 9
BTV17/0VD7Field - only halfVolts pin 2 TDA8174A low at 4.9v ( 25v), D403 (marked EIC11E)supplies 25v & whilst reading OK was faulty (Used BY133 in lieu)14-09-04
FergusonD78N (ICC9)PULSING RED/GREEN LEDCHECK SMD DIODE DP83 OFF PIN1 OF IP0314-09-04
FergusonICC9 D78NRed LED comes on, changes to G then offDP83 LL4148 sm diode o/c14-09-04
FergusonICC9 D78NEW faultyVolts at coll TL40 EW dr tr low - CL42 4µ7 160v14-09-04
MitsubishiC25D7BNO SURROUND SOUNDSELECT SPECIAL MENU,ENSURE "STANDARD TV" IS "OFF" SWITCH OFF FOR 30 SECS14-09-04
MitsubishiC25D7BNo surround sound - when selecting in menu it shows "OFF" & can't be turned back onSoftware bug - select special menu & ensure "Standard TV" is set to "Off", sw off for 30 secs. Sw back on & Surround sound can now be set14-09-04
MitsubishiC25D7BSlow start up, no Txt, juddering pic & vol slowEEPROM faulty Pt no MITS274P747010 & change IC701 Pt no MITS274P75505014-09-04
MitsubishiC28D7BNo soundIC3A1 IC3A2 and IC3B1. It is always the middle one that goes s/c and blows Z902 which then removes the 28v supply to these ICs. You can check which one is s/c by unsoldering pin 9 of each ic one at a time and the check for s/c across PLUG DE which is the 28v supply14-09-04
SharpDA100 66ESD7HField collapse - sound ok13v supply to IC501 FOP chip low at 8v. C501 470µ 25v leaky14-09-04
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