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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: 20
BPL9002ECRHissing from LOPTx & HT low at 75vC561 220µ 250v HT res cap14-09-04
BPL9002ECRPatterning on picC562 22µ 250v14-09-04

BPL9002ECR Mk2Dead - caps in psu sec had blown upHi HT - change Q511 2SA1015 , R552 91k, R555 47k & opto coupler14-09-04
BPL9002ERCNo OSD ot tunimgR722 12k o/c14-09-04
Bush2002DeadZD401 12v 1w zener, R419 5R6 3w & 2 caps in psu - HT = 115v14-09-04
Bush2002 OnwaNO 12v FROM LINE STAGER421 ( 0.68ohm ) , R419 ( 5.6ohm ) , ZD401 ( BZX61-C12 ) C909 & C919 both ( 47uF ) 63V14-09-04
Bush2002Alow contrastR316 100k o/c14-09-04
CrownCTZ9002Rst/by onlyPri HT at chopper tr - R320 120k 1/4w in psu o/c14-09-04
DiamondDM002 Daewoo 24PFDeadTOP214, D12 1N4148, D819 18v zener on main board & fuse14-09-04
GEC2002HRaster - bright screen & flyback lines.R258 o/c.14-09-04
Grundig1002 seriesNo colourripple on Pin 39 of IC800 the Y/C chip. Resoldering the components in this area cured the fault even though nothing looked dry jointed.14-09-04
HikonaRM2002Crackle on sound unaffected by vol settingcheck 47µ tant coupling cap under IF screening can14-09-04
HikonaRM2002No soundIC101 TA7680 Audio o/p chip pin 1 (vol cont) should read 5.8v at min vol & 0v at max. Was not varying - Q201 faulty - BC238 does14-09-04
HikonaRM2002No sound.Q201 ( BC238 ) but diff legout , TA768014-09-04
NikkaiMG002RDead.R801 ( 1.5R 5W ) o/c by on/off switch.14-09-04
Philips1002Dead - 140v/285v rail ok.R561 ( 2 2R ) high.14-09-04
SamsungLE32A456C2D PSU board: BN44-00214Aot coming out of standby or shutting down. Check solder joints on T0-220 MOSFET QB802 on the power supply board. 11-10-12
SanyoCAQO3002W A3A14No sound - ok thro' SCARTIC101 LA768014-09-04
SharpC2002Dead.STR4090.14-09-04
SharpC2002Standby - no switch on some times from s/by.R717 ( 390k ) , C720 , R712 , last IC701.14-09-04
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