panasonic Repair Tips




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MakeModel Ch.SymptomProblem SolutionSolutionBy:
PanasonicU5
No sound on one channel - intermittent.1MR resistor under PCB from pin 18 of IC501 to chassis.
PanasonicU5
No picTDA3562A col dec chip
PanasonicU5
No luminance for first half hour or just intDry joints LOPTx - you wouldn't believe it with your eyes!
PanasonicU5
NO LUMINANCE FOR FIRST 30minsLOPT DRY JOINTED
PanasonicU5
No colTDA3562A col dec chip
PanasonicU5
Lines when chan changing & difficult to tuneCheck IC171 SAB3035 & Xtal X171
PanasonicU5
Line pairing for first few mins at sw onC808 47ยต 16v in psu
PanasonicU5
Int loss of picIC5002 SAA5240 on Txt pcb
PanasonicU5
Int loss of line syncTDA2579 IC501
PanasonicU5
Int dead with whineDry joints LOPTr -emitter
PanasonicU5
Int deadDry joints scan coil plug
PanasonicU5
HT volts variesD806 zener RD6-2EB2
PanasonicU5
E-W faultyQ753 EW driver 2SD1265P dry joints or faulty
PanasonicU5
Dead - chopper tr blowsR803 330k o/c
PanasonicU5
DeadQ551 LOPTr s/c & IC501 TDA2579 timebase gen chip faulty
PanasonicU5
Dark picTDA3562A
PanasonicU5
Channels - poor channel change & picture.Drys on Xtal X171 , faulty IC171.
PanasonicU5
Channels - no channel changeDrys on Q551.
PanasonicU5
Blank raster - sound ok - brightness worksTDA3562A u/s
PanasonicU4W
Squealing - low HT.C854 ( 100u f , 250v ) , D557 ( BY299 ) , last LOPTX.