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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: 14
ProtechFaint picC604 47n 63v s/c14-09-2004
Protech11AK20D1Dead - pri HT onlyR804 15k 1w, IC801 TDA4505-2 replaced left psu tripping - D809 MR856 s/c - used BYW96E in lieu14-09-2004
Protech3731T 11AK20M-3LOPTx arcingUse ALB587 from CHS (same as Bush 1433)14-09-2004
Protech3743TDeadR804 820k in psu o/c14-09-2004
Protech3743TReluctant cold startReduce R802 from 75k to 30k 2w14-09-2004
Protech5131NT VestelNo pic - sound okPoor washed out pic appeared when A1s advanced - TDA6107Q RGB O/P chip on CRT base14-09-2004
Protech6392 11AK12-9Field collapseR818 22K o/c14-09-2004
Protech7206NT 11AK19-8AE-W faulty - narrow, bowed picDry jointed & o/c C630 430nF, when replaced took the FOP chip out. R629 2R7 safety res o/c, replaced TDA8351 FOP chip & L604 shorted turns (read 0R9 - should be approx 2R7) rewound with 393 turns - see also Bush 2871NTX14-09-2004
Protech7295Field collapseNo volts pin 33 TDA8362A (field ramp) - R810 22k o/c14-09-2004
Protech7295No soundTDA1521A Audio o/p chip u/s due to C380 1000µ 35v s/c14-09-2004
Protech7295Tuning driftTuning volts varies due to C504 0µ1 leaky14-09-2004
Protech7295 11AK12Field collapseR818 22k 1w in 33v line o/c14-09-2004
Protech7296NTField collapseTDA8361A jungle chip - no field drive o/p although most dc volts were about right14-09-2004
ProtechPFA3639/B 11AK20DeadD809 sec chopper trfmr s/c - needs r/c to sw on set14-09-2004
page: 1 
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