Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
---|---|---|---|---|---|
Sony | KV1943R | IMMEDIATE SHUT DOWN, REPLACED C-539 | Unit came in dead. After replacing shorted Q-901, Q-902 andopen F-603 regulated +115VDC read about 130VDC. Replacement of IC-601didn't help. Scoping TP-91 for ripple found about 4VPP horizontal rate. | ||
Sony | KV1943R | NO TUNING - LED CHANNEL INDICATORS ALL LITE UP, L-511 OPEN | Turn unit on, all channel indicators (LED) are lite up, noreception. Checked: 24VDC is missing from IC-034. | ||
Sony | KV1943R | TUNER LOCKS UP, RUBBER CONTACT, 9-919-577-00 | Tuner was locked up on Channel 5. When channel button waspressed, the picture from other channels would appear for an instant, thenrevert back to Channel 5. Volume and power would not function. | ||
Sony | KV1943R | POOR HORIZ SYNC ON WEAK STATIONS, REPLACED RV501 | The unit worked fine on strong signals. However, whenreceiving a weak signal the horiz. sync would be poor. We at first lookedat the IC, but the problem turned out to be RV501. It was very noisy. | ||
Sony | KV1943R | FOLD OVER ON TOP OF PICTURE, REPLACED C-523 | The unit has a fold over on the top of the picture and doesnot fill the screen. The problem is caused by C-523 drying out. This isbecoming a more common problem with this chassis now because the capacitoris located near components that become warm and | ||
Sony | KV1943R | BLANKING - VERT PROBLEMS, REPLACED C529 | Set was stretched on bottom three inches of screen. The topfour inches were fine but there was a black vertical bar that was aboutone inch wide on the left and widened to three inches on the right side.It was blacked out in this one area only. Adjustin | ||
Sony | KV1943R | NO POWER ON, REPLACE C001 AND C003 | The unit would not turn on. | ||
Sony | KV1943R | DEAD, REPLACED BRIDGE DIODES AND FILTER CAP | Four times within the past 3 years customer has had to havelow volt diode replaced. Found that only one diode at a time was beingreplaced. Found filter cap leaky. Replaced all 4 diodes along withthe filter cap to help prevent further customer aggravat | ||
Sony | KV1943R | NO LOCK CHANNEL AND VOLUME, OPEN C001 ON M2 BOARD | Set would change channels on its own. Also sound would go upon its own. Found C001 on M2 board opened. | ||
Sony | KV1943R | INTERMITTENT SOUND, REPLACED C226 | Highly intermittent audio. Slight popping noise beforegoing out. | ||
Sony | KV1943R | INTERMITTENT SOUND, REPLACED T207 | Sound intermittently goes dead. Troubleshooting indicatesthat the sound is not passing through the IF section. Isolated problemto T207. |