Dicas Reparação
Modelo - Chassis KV1923
Pesquisa: KV1923 Enviar Dica Resolvida
Resultados 12
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV1923 | WRONG FBT P/N IN SERVICE MANUAL, TWO FBT USED | Found TV had a bad FBT and ordered one by the number given byService Manual. It does not work TV shuts down. Part number is wrong!In the manual it reads 1-439-235-00. Part number should be 1-439-254-00. | ||
| Sony | KV1923 | INTERMITTENT TUNING OPERATION | The unit would intermittently not tune or accept tuningcommands. All the control ICs of course were changed. The problem wascaused by a very intermittent L035 coil. It would increase resistance toabout 1000 ohms. Replacement resolved the problem. -H | ||
| Sony | KV1923 | NO VERTICAL | The unit had no vertical. We found the voltage at IC-501/P14to be zero. C-520 was shorted and causing the problem. -HQ COMMENTS: C-520/10uF/16V is located OFF pin 14/IC-501. | ||
| Sony | KV1923 | PIN CUSHION DISTORTION | SCC-204F-A chassis. Picture was narrow, slight pin cushiondistortion and about 5 narrow dark vertical bars on left side of screen. | ||
| Sony | KV1923 | PICTURE DISTORTION (V) | Unit came in with 2 of vertical. We found C520 shorted andthis restored height but the linearity was poor. Found C529 to havechanged in value - evidently damaged. C520 must have tantalum replacementfor best results. | ||
| Sony | KV1923 | SOUND DISTORTION, REPLACED IC CX760 | Sound becomes garbled as volume is increased. | ||
| Sony | KV1923 | NO PICTURE, HAS SOUND, REPLACED C516 | No picture, just sound. | ||
| Sony | KV1923 | TUNING UP/DOWN WOULD NOT LOCK | In the program mode tuning up/down set will not lock onchannel. | ||
| Sony | KV1923 | SOUND DISTORTION, REPLACED D2006 | When set was first powered up, volume was maximum and couldnot be lowered. Unit was turned off and restarted with no sound now atall. Checking output of A/D convertor, TNS3701BNS, found no PWM signal.Measured standby supply voltage, Pin 8, with power o | ||
| Sony | KV1923 | PICTURE NOISE | Retrace line. | ||
| Sony | KV1923 | DEAD | Dead set. Found defective the following parts F602, Q901,D514, D502. After replacing defective parts it was found R560 and R561were getting hot. Traced cause to an open contact between circuit boardand L502 the HLC coil. | ||
| Sony | KV1923 | TUNING SHIFTS | Channels would program correctly. If set was on channel 2and moved to channel 8 then back to channel 2, channel 2 would not comein. Same with channel 8 when set was returned to this channel. Thiswould also happen if the set was turned off and back on. |