Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
---|---|---|---|---|---|
Panasonic | Alpha 2W | Line output transistor sc | Check for dry joints on line drive tx ( often invisible ) | ||
Panasonic | Alpha 2W | Goes bright red then trips off | Q353 red o/p tr coll drops to 3.5v - L353 180µH coil o/c | ||
Panasonic | Alpha 2W | Field collapse | IC501 TDA2579A & check C403 0µ01 pin 2 IC for leak | ||
Panasonic | Alpha 2W | Faint line shading down right hand side. | C858 ( 1 , 000uf , 25v ) leg not through PCB. | ||
Panasonic | Alpha 2W | Excess width & no E?W | Crack in print by pin 1 LOPTx | ||
Panasonic | Alpha 2W | E-W dist | L752 s/c or C754 180pF leaky in base to Q751 | ||
Panasonic | Alpha 2W | DEAD check for 0.4V pin 2 IC801 if missing | CHECK R803 AND R827 ( 220K ) if ok replace R815 ( 5R6 ) Q801 & Q802 & STR54041 | ||
Panasonic | Alpha 2W | Dead - loptr 2SD1441 s/c, R567 1A link o/c | New parts went way of originals - HT high due to STR54041; also damaged CITAC chip SAB3035 causing blank raster/no sound via aerial or AV | ||
Panasonic | Alpha 2W | Dead - IC1204 (st/by 5v reg) overheats with only 1v on o/p | zener D171 MA4082 is leaky, microprocessor IC1203 MAB8461PW134 is faulty. | ||
Panasonic | Alpha 2W | Dead | No volts pin 2 IC801 chopper; check R803 & R827 220k | ||
Panasonic | Alpha 2W | Blowing line transistors. | Drys on line driver transformer. | ||
Panasonic | Alpha 2W | at switch on runs for 2 sec and goes dead | HT too high at 180V, OK if running on a dummy load- STR54041 is faulty. | ||
Panasonic | Alpha 2M TX21MD3 | Dead, relay clicking for three or four minutes, then works o/k | C807 & C806 ( 100uF 50 volt ) in power supply primary | ||
Panasonic | Alpha 2A | SMEARY VIDEO | CHECK C684 ON V MODULE 22mfd BI-POLAR - USE 2 IN SERIES. | ||
Panasonic | Alpha 2A | NOISE ON NICAM | C2572 - C2573 220pf |