panasonic Repair Tips
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Results 1199
Results 1199
| Make | Model Ch. | Symptom | Problem Solution | Solution | By: |
|---|---|---|---|---|---|
| Panasonic | Z4 | DOTS ON PICTURE ONLY WHEN USED ON INDOOR AERIAL | DRY JOINT ON COIL INSIDE TUNER UNIT ( JUST ABOVE PIN FURTHEST FROM AER. SOCKET ) | ||
| Panasonic | Z4 | dead - STR54041 blown also Q801, 802, R802 | happens every few weeks - checked mains plug & deguassing positor | ||
| Panasonic | Z4 | Dead - slight eht rustle at sw on - no st/by | Works on reduced mains 100v; - STR54041-M | ||
| Panasonic | Z4 | Dead | R802 4R7 o/c; IC801 STR54041 s/c; C808 10µ 63v, Q801 & 2 2SD965 leaky. Note:- C809 = 10µ 6.3v | ||
| Panasonic | Z4 | Dead | 270k START UP RESISTOR IN POWER SUPPLY OC | ||
| Panasonic | Z4 | BRIGHTNESS SLOWLY INCREASES UNTIL SCREEN COVERED I | R380 680k ON CRT PCB OC | ||
| Panasonic | Z4 | Blows lop transistors periodically | Check right type fitted - should be 2SD1541LB | ||
| Panasonic | Z3-T | TDA4505M-N3 replacement by TDA4505E | Re-align AFC as nec only | ||
| Panasonic | Z3-T | Replacement of TDA4505M-N3 | You can use cheaper TDA4505E if re-align afc coil only | ||
| Panasonic | Z3T | Startup - no start up - intermittent. | D1124 ( 5.1V ) zener leaky. | ||
| Panasonic | Z3T | Field scan distorted - int collapse | Dry joint IC101 IF/TB gen TDA4505M esp pin 2 | ||
| Panasonic | Z3T | FIELD CRAMPING WHEN COLD | TDA3653C IC451 | ||
| 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 |