Dicas Reparação PANASONIC
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Panasonic | Z3T | Field collapse & lin int | Dry joints TDA4505 IF/timebase chip under metal can | ||
| Panasonic | Z3T | Dead with squeal | LOPTr 2SD1439 leaky - used BU508D - resold Line dr tfmr T531 | ||
| Panasonic | Z3T | Dead - st/by only | No HT - STR54041 faulty | ||
| Panasonic | Z3T | Brightness correct top left out bottom right. | Q306 collector-to-emitter leak. | ||
| Panasonic | Z3 Chassis | Tuning drifts | C17 10nF ceramic cap leaky | ||
| Panasonic | Z3 Chassis | Trips at sw on | Check start up resistors R560 270k & R552 27k for hi res | ||
| Panasonic | Z3 Chassis | St/by only | IC1101 micro pin 6 should be high (power on command) but wasn't as chip not being reset. IC1104 resets IC1101 when its supply reaches 5v but didn't reach this level as zener D810 in the 5v reg cct was leaky | ||
| Panasonic | Z3 Chassis | Reverts to st/by with rush of EHT | HT correct - no line drive; removing prot tr Q451 revealed field collapse caused by D453 MA2270 zener diode - the cause of this fault was traced to flashover in crt | ||
| Panasonic | Z3 Chassis | No start up | Works ok when pin15 (X ray prot) IC101 is grounded; R560 270k near plug E7 o/c | ||
| Panasonic | Z3 Chassis | No color | C616 10nF 50v leaky - pin 29 IC101 | ||
| Panasonic | Z3 Chassis | Int pic | Hairline cracks around line dr trfmr T531 | ||
| Panasonic | Z3 Chassis | Int dead | IC1101 reset line slightly low ; C1122 0µ01 leaky | ||
| Panasonic | Z3 Chassis | Field scan cramped at bottom at sw on | IC451 TDA3653C FOP chip | ||
| Panasonic | Z3 Chassis | Field lin - top stretched & bottom compressed | C458 4µ7 or 10µ 50v | ||
| Panasonic | Z3 Chassis | Field - reduced height with poor lin | C404 4µ7 50v |