| Make | Model | Problem | Solution | Date |
| | | |
| Found: 1049
|
| Panasonic | Z3 Chassis | Failed to start - int, with no R/C operation | 5v supply from small trfmr at TPE2 = 4.4v; D1124 5v1 zener leaky | 14-09-04 |
| Panasonic | Z3 Chassis | Failure to start | R802 330k o/c - bias provider for chopper chip | 14-09-04 |
| Panasonic | Z3 Chassis | Field - reduced height with poor lin | C404 4µ7 50v | 14-09-04 |
| Panasonic | Z3 Chassis | Field lin - top stretched & bottom compressed | C458 4µ7 or 10µ 50v | 14-09-04 |
| Panasonic | Z3 Chassis | Field scan cramped at bottom at sw on | IC451 TDA3653C FOP chip | 14-09-04 |
| Panasonic | Z3 Chassis | Int dead | IC1101 reset line slightly low ; C1122 0µ01 leaky | 14-09-04 |
| Panasonic | Z3 Chassis | Int pic | Hairline cracks around line dr trfmr T531 | 14-09-04 |
| Panasonic | Z3 Chassis | No color | C616 10nF 50v leaky - pin 29 IC101 | 14-09-04 |
| Panasonic | Z3 Chassis | No start up | Works ok when pin15 (X ray prot) IC101 is grounded; R560 270k near plug E7 o/c | 14-09-04 |
| 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 | 14-09-04 |
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| 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 | 14-09-04 |
| Panasonic | Z3 Chassis | Trips at sw on | Check start up resistors R560 270k & R552 27k for hi res | 14-09-04 |
| Panasonic | Z3 Chassis | Tuning drifts | C17 10nF ceramic cap leaky | 14-09-04 |
| Panasonic | Z3-T | Replacement of TDA4505M-N3 | You can use cheaper TDA4505E if re-align afc coil only | 14-09-04 |
| Panasonic | Z3-T | TDA4505M-N3 replacement by TDA4505E | Re-align AFC as nec only | 14-09-04 |
| Panasonic | Z3T | Brightness correct top left out bottom right. | Q306 collector-to-emitter leak. | 14-09-04 |
| Panasonic | Z3T | Dead - st/by only | No HT - STR54041 faulty | 14-09-04 |
| Panasonic | Z3T | Dead with squeal | LOPTr 2SD1439 leaky - used BU508D - resold Line dr tfmr T531 | 14-09-04 |
| Panasonic | Z3T | Field collapse & lin int | Dry joints TDA4505 IF/timebase chip under metal can | 14-09-04 |
| Panasonic | Z3T | FIELD CRAMPING WHEN COLD | TDA3653C IC451 | 14-09-04 |
| Panasonic | Z3T | Field scan distorted - int collapse | Dry joint IC101 IF/TB gen TDA4505M esp pin 2 | 14-09-04 |
| Panasonic | Z3T | Startup - no start up - intermittent. | D1124 ( 5.1V ) zener leaky. | 14-09-04 |
| Panasonic | Z4 | Blows lop transistors periodically | Check right type fitted - should be 2SD1541LB | 14-09-04 |
| Panasonic | Z4 | BRIGHTNESS SLOWLY INCREASES UNTIL SCREEN COVERED I | R380 680k ON CRT PCB OC | 14-09-04 |
| Panasonic | Z4 | Dead | 270k START UP RESISTOR IN POWER SUPPLY OC | 14-09-04 |
| Panasonic | Z4 | Dead | R802 4R7 o/c; IC801 STR54041 s/c; C808 10µ 63v, Q801 & 2 2SD965 leaky. Note:- C809 = 10µ 6.3v | 14-09-04 |
| Panasonic | Z4 | Dead - slight eht rustle at sw on - no st/by | Works on reduced mains 100v; - STR54041-M | 14-09-04 |
| Panasonic | Z4 | dead - STR54041 blown also Q801, 802, R802 | happens every few weeks - checked mains plug & deguassing positor | 14-09-04 |
| 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 ) | 14-09-04 |
| Panasonic | Z4 | FIELD ROLL FROM COLD | C402 3u3 TANTALUM US | 14-09-04 |