Dicas Reparação
Modelo - Chassis KV2643R
Pesquisa: KV2643R Enviar Dica Resolvida
Resultados 31
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV2643R | PICTURE SHIFTS, DEMAGNETIZED CRT | Graphics were shifted to the right. When unit was taken toservice shop and center-cross generator placed on set the centering wasoff approx. 2 inches to the right. All associated circuitry was checkedand found to be in proper operating condition. Repl | ||
| Sony | KV2643R | NO PICTURE, REPLACED C607 | The following parts were bad in this set: Q901, Q902, Q601,R605 open, R609 open, R232 open, connector A-10 on PC board arcing.After all these parts were replaced, the set would come on and thepicture would blink severely, both horizontally and verticall | ||
| Sony | KV2643R | NO SOUND | No sound, picture OK. | ||
| Sony | KV2643R | CHANNEL LOCK, REPLACED L001 | Right after turn-on, tuner would lock on a channel. Wouldnot change channels manually or by hand unit. It had no clock on Pins12 and 13 of IC001 (volume and on/off OK). | ||
| Sony | KV2643R | SHUT DOWN, REMOVED L810 | This unit would shut down by itself. The picture wasexpanded in size (a lot of overscan). The HV was 3KV lower. | ||
| Sony | KV2643R | SOUND NO MUTE DURING CHANGE, REPLACED Q042 | Sound would not mute during channel change. Checked Pin #13of IC032 positive pulse was present during channel change, therefore,Q042 was suspected. | ||
| Sony | KV2643R | CLOCK DISPLAY DIMS, REPLACED DISPLAY | Clock display dims when touched by hand. Display flickerswhen someone walks by TV. | ||
| Sony | KV2643R | CHANNEL DRIFT, REPLACED IC2003 | Set would drift off channel during operation. Found IC2003(display memory) apparently loading control IC and changing PWM voltage. | ||
| Sony | KV2643R | RETRACE LINES, BROKEN LAND ON C BOARD | Servicer informed me of a problem where the picture would benormal and then get brighter and go into retrace and then back to normal.Then it again would repeat itself. | ||
| Sony | KV2643R | DEAD, REMOVE JW54 AND OTHERS | No operation above 100VAC. H. voltage was at 23KV. Servicerhad replaced flyback and IC501. Voltage to shutdown circuit was 5.7V.Removed L801, H. voltage went up to 26KV. -HQ COMMENTS: We will publish updated info on this problem shortly. Asfor now c | ||
| Sony | KV2643R | RETRACE LINES, REPLACED CX556 | Set would gradually change from normal to retrace lines.Video signal on output of CX556 changing level. | ||
| Sony | KV2643R | WEAK PICTURE, REPLACED LEAKY C208 | Set had weak video with sync problem. | ||
| Sony | KV2643R | NO TUNING, REPLACED IC033, CX804 | After pressing channel button J none of remaining channelscan be manually selected until remote selection is used, at least once. | ||
| Sony | KV2643R | PICTURE BLANKING, REPAIRED CRACKED FOIL | This unit would rhythmically go from good picture to excessbrightness with retrace lines then to black screen. This would happen atabout a 7 second interval. This would happen continually as long as setwas turned on. The collector voltage on Q704, 705 | ||
| Sony | KV2643R | NO SOUND OR PICTURE, REPLACED IC2002 | No sound or picture. Could not program any channels norwould the set change address positions. |