Dicas Reparação PANASONIC
Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Panasonic | Z3 Chassis | Field - reduced height with poor lin | C404 4µ7 50v | ||
| Panasonic | Z3 Chassis | Failure to start | R802 330k o/c - bias provider for chopper chip | ||
| 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 | ||
| Panasonic | Z3 Chassis | Dead - no volts from psu | Remove Q806 st/by tr & wind up mains via variac; all worked ok & Q806 2SA683 was faulty | ||
| Panasonic | Z3 Chassis | Dead | R801 4R7 5w o/c, IC801 STR50103A-M s/c, D816 HT SR2KN prot diode s/c, Q806 St/by sw tr 2SA683 s/c,, R559 10R 7w o/c, Q551 2SD1439 LOP Tr leaky | ||
| Panasonic | Z3 Chassis | Cuts out on bright scenes | R316 47k in beam lim cct o/c | ||
| Panasonic | Z3 Chassis | Colour at max & won't reduce - OSD does alter | IC1101 micro pin 31 doesn't vary when col adj. Control carried out in IC101 pin 21 on if/dec panel; when this pin grounded a mono pic observed; D1149 MA165 diode leaky | ||
| Panasonic | Z3 | XRAY PROT WORKING | CHECK R560 270k | ||
| Panasonic | Z3 | Tuning drifting - worse from cold. | C17 ( 10nf ) leaky. | ||
| Panasonic | Z3 | Trips off aft 2 secs | R560 270k in trip cct (185v supply to RGB monitor) | ||
| Panasonic | Z3 | TRIPS OFF | R560 270k R552 27k | ||
| Panasonic | Z3 | STUCK IN STBY IC1104 5v RAIL LOW AT 4v | Q804 OR ZENER DIODE D810 | ||
| Panasonic | Z3 | Set buzzes from PSU but dead | If pin 15 IC101 high ( X-ray protection ) try shorting to chassis , if set ok check Q502 and R560 270k | ||
| Panasonic | Z3 | Reduced height poor linearity | C404 ( 4u7 ) 50V | ||
| Panasonic | Z3 | POWERS UP THEN GOES DEAD | REMOVE Q451 POWER UP ON VARIAC , IF FIELD COLLAPSE CHECK D4539 ON ODD OCCASIONS FLASHOVERS IN TUBE CAUSE DIODE TO FAIL |