Dicas Reparação
Modelo - Chassis KV2657R
Pesquisa: KV2657R Enviar Dica Resolvida
Resultados 7
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV2657R | POOR TUNING ACTION - TUNING DRIFTS AFTER TIME, IC602 | Critical tuning and drift after time. Voltages at TP02 andTP03 on the (M) board were very high, about 49V. 33V supply read 43.0V.Q-604 on the (F) board not operating. Measured voltages and found IC-602inoperative ..... open device. | ||
| Sony | KV2657R | NO VOLUME OR PICTURE CONTROL | There was no picture or sound control. Unit would power upand change channels, LED indicators worked. Found the problem to becaused by two shorted buffers - Q005 and Q006. It is strange that theUPC was not defective. I suspect that this was lightning | ||
| Sony | KV2657R | INCORRECT PART NUMBER, COVER NECK | Incorrect Part # 9-910-999-51 Correct Part # 4-334-942-00 -HQ COMMENTS: We will publish service bulletin on this. | ||
| Sony | KV2657R | NO PIX | Same dealer had 3 sets out of box with no raster. Sets hadsound and H.V. They found a crack on all 3 boards in the same spot. | ||
| Sony | KV2657R | VERTICAL ROLLING | After set warms up (approx. 1 to 2 hours), set would havevertical problems, rolling and eventually vertical collapse. | ||
| Sony | KV2657R | NO CHANNEL 4 | When ch. 4 button was pressed, it would not light, instead 3other channels would light. | ||
| Sony | KV2657R | HIGH VOLTAGE INTERFERENCE | Interference with other sets. High voltage arcing because oneside of C867 on the P board was not soldered. It caused interference withother sets in customer's home. |