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Modelo - Chassis 21
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV2156R | BURNT (M) BOARD | This was the third unit I encountered with burnt M board.All of them on the same spot. D115 shorted and R181 overheated and burntthe board. | ||
| Sony | KV2141R | HORIZONTAL FREQ OFF - HIGH PITCHED SQUEAL, RESOLDER L801 | Horizontal frequency off produces high pitched squeal. | ||
| Sony | KV1221R | SHUTDOWN, REPLACED Q601 | Using an isolation transformer, unit will work properly.When using the wall outlet, unit will not turn on. The only diff. foundwas the isolation transformer output was 8VAC less than the wall outlet. | ||
| Sony | KV2145R | FOLDOVER AT THE TOP OF THE PICTURE, R520 DECREASED IN VALUE | After warm-up, pix would start to pull down with slight fold-over at top of pix and R520 decreased to 7.8k Ohms. | ||
| Sony | KV1217 | UNIT SHUTS DOWN, RESOLDERED R515 | Unit keeps shutting off after turn on. | ||
| Sony | KV2145R | WEAK VIDEO AND POOR SYNC, LEAKY C208 | This unit displayed weak video and poor sync. We found C208of IC201 Pin 3 to be leaky. | ||
| Sony | KV1221 | NO TUNER LOCK IN, REPLACED N2503 | This unit worked fine except that intermittently the tunerwould not lock in on the C position. When the N position was selectedduring the failure mode then the C channel information would be present.We found the neon lamp N2503 to be the cause of the pr | ||
| Sony | KV2145R | NO V DEFLECTION, REPLACE Q502/503 & R520/R555 | Vertical problem. | ||
| Sony | KV2145R | PIC FOLDS OVER AT TOP, REPLACED D504/505/506 | After two hours, picture folds over at top. Replace 10 kohmresistor (R520) as per FPR of Feb. 1984 but problem still occurred. | ||
| Sony | KV2101 | INTERMITTENT HIGH-PITCH NOISE, H LIN COIL L-803 | Intermittent high-pitch noise. | ||
| Sony | KV2145R | PIC FOLDS OVER AT TOP, R520 DECREASED IN VALUE | Unit had 1/2 inch of fold over top of screen. Found R520reading 8.1K (should be 10K), upsetting bias on vertical outputs. | ||
| Sony | KV2145R | RELAY CHATTERING, RESOLDER D602 | Power relay RL001 would not stay engaged when power on buttonwas depressed. The new MF board didn't cure the chattering relay problem. | ||
| Sony | KV1221R | INTERMITTENT TURN OFF, REPLACED IC001 | This unit would intermittently turn off. We found the remotedecoder IC (IC001) to be thermally sensitive. | ||
| Sony | KV2142R | NO PICTURE, REPLACE C2213 | 33V line shows video on DC of about 1 1/2V. After warm-uptuner drifts off channel with or without AFC. | ||
| Sony | KV2145R | WHITE H BAND ON THE SCREEN, R520 INCREASED IN VALUE | After ten minutes of operation, this receiver displayed aone-half inch white horizontal band at the top of the screen. Verticalsize and linearity were not affected. |