Dicas Reparação
Modelo - Chassis KV2647R
Pesquisa: KV2647R Enviar Dica Resolvida
Resultados 61
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV2647R | JAILBARS, POOR GROUND ON "S" BOARD | Jailbars present on left side of screen more pronounced onthe higher channels. Found poor ground on S board opposite the groundingposts from the tuner. | ||
| Sony | KV2647R | NO VERTICAL SWEEP, REPLACE RV2206 | No vertical sweep. Voltage at IC501 Pin 11 should be 6.3 VDC.Actual reading was 2.2 VDC. Found vertical hold control had an 8000 ohmreading center tap to case at all times. | ||
| Sony | KV2647R | BLACK LINES ON THE SCREEN, REPLACE IC501 | Solid black line across the screen about 1/2 inch thick,2 inches from the top. Very intermittent. | ||
| Sony | KV2647R | NO COLOR, REPLACE IC501 | No color. Very low burst. | ||
| Sony | KV2647R | BLACK LINE ON THE SCREEN, REPLACE V OUT IC502 | After set would warm up a black line about 3/8 inch (veryfaint) would appear in the center of screen. | ||
| Sony | KV2647R | NO OPERATION, H OUT Q-502 | No sound, no picture. Found horizontal output shorted. | ||
| Sony | KV2647R | NO VERTICAL SYNC DURING CHANGING CH., WRONG VALUE R580 | Vertical sync loss when changing channels, OK when scenefades out before a commercial. | ||
| Sony | KV2647R | SHUT DOWN WITH JIG, GROUND HVR | This particular unit shut off instantaneously when power wasturned on. It happens only when chassis was attached to the jig. Most ofthe time technicians spent useless hours to find out that the ground onthe HVR was missing (usually a screw grounds the | ||
| Sony | KV2647R | NO PICTURE, OPEN R057 AND PRESCALER, | R057 resistor open (MF board). No problem found in reg.circuit. Solder splash on feed thru terminal of prescaler. | ||
| Sony | KV2647R | TUNING DRIFT, RESOLDER R053 | Upon changing channels a good video will come on for a momentbut will drift off to barely viewable negative picture. | ||
| Sony | KV2647R | NO CONTROL OF BRIGHTNESS, BROKEN FOIL ON CRT BOARD | No control of brightness. Picture would start at normallevel and slowly get dimmer with retrace lines, then flash to normalpicture level again. No G2 voltage on Pin 12 of CRT board. | ||
| Sony | KV2647R | PICTURE DISTORTION, REPLACE C549, C550 AND C554 | Slight PIE CRUSTING and marginal horizontal sync. | ||
| Sony | KV2647R | SNOW PICTURE, RESOLDER R053 | Set displayed snow on all channels. I found R053 on MF boardimproperly soldered. | ||
| Sony | KV2647R | SET WOULD NOT TURN ON/OFF BY REMOTE, IC-101 | Set would not turn on/off. | ||
| Sony | KV2647R | RETRACE LINES AND RASTER PULSADE, HAIRLINE CRACK ON C BOARD | Raster was pulsating at a steady rate about 3 times persecond, retrace lines were visible, excessive brightness and video fading.Found a hairline crack on C board G2 line. |