Dicas Reparação PANASONIC
Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Panasonic | Z4 Chassis | No video with faint unsync lines in background | Sync pulses leaving pin14 IC521 poor - 180pF cap connected to this pin leaky | ||
| Panasonic | Z4 Chassis | No sync | Comes from Txt board where IC3507 MAB8461-PW216 was faulty (dis pins 2 & 3 to check) | ||
| Panasonic | Z4 Chassis | No sound and half a pic (shifted over) | C503 0µ01 cap across line shift control leaky | ||
| Panasonic | Z4 Chassis | Letter "C" displayed towards left/centre of screen | Reset micro by pressing VOL- button on TV whilst pressing Timer button on Hset - Oks then displayed | ||
| Panasonic | Z4 Chassis | Int loss of sound | Check conns to speakers | ||
| Panasonic | Z4 Chassis | Field int collapses or rolls | C402 3µ3 tant cap in Field osc stage | ||
| Panasonic | Z4 Chassis | Dead after initial burst of life | Trips even with LOP stage dis'd - fault in prot cct - Q558 2SA879 faulty tho checked ok out of cct | ||
| Panasonic | Z4 Chassis | Dead - surge lim res R802 4R7 5W o/c | STR54041M IC801 & Q801/2 s/c & D854 overvolts prot diode s/c. C809 0µ1feedback cap was the cause (caused excessive HT) also change C808 10µ 63v | ||
| Panasonic | Z4 Chassis | Dead - blank raster when optocoupler overidden | No activity from main micro - IC1202 EEPROM ST24C02A faulty | ||
| Panasonic | Z4 Chassis | Comes on with field collapse - gradually opens up then int shuts down | C462 470pF ceramic cap leaky in FOP cct | ||
| Panasonic | Z4 Chassis | Col int low or absent | C2651 0µ01 sm int o/c | ||
| Panasonic | Z4 Chassis | Bright green at sw on & int cuts out | C350 on crt base | ||
| Panasonic | Z4 | Tuning drift - sound muted. | C524 ( 180pf ) leaky. | ||
| Panasonic | Z4 | TUNING DRIFT NO SOUND NO SOUND OSD | Q1272 3 4 OR MORE LIKELY C524 180pF | ||
| Panasonic | Z4 | TUNING DRIFT | TUNER UNIT |