Dicas Reparação
Modelo - Chassis KV2084R
Pesquisa: KV2084R Enviar Dica Resolvida
Resultados 15
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV2084R | INTERMITTENT VERTICAL, RE SOLDERED OPEN GROUND BY IF SHIELD | Intermittent vertical deflection. Very sensitive to tappingof the A board. | ||
| Sony | KV2084R | ARCING IN SET, REPLACED FBT | Found case of FBT melted with a hole in it. | ||
| Sony | KV2084R | BRIGHT SCENES OVERDRIVEN, L922 OPEN | Certain bright scenes appear overdriven. L922 proved to beopen which altered the bias voltage to the video buffer Q935. -HQ COMMENTS: With L922, the Video DC level is shifted. | ||
| Sony | KV2084R | INOPERATIVE, OPEN Q602 RELAY DRIVE | Unit was inoperative. | ||
| Sony | KV2084R | LOSING VERTICAL DEFLECTION/VERTICAL FOLDOVER IS INTERMITTENT | On A board unit would have intermittent vertical foldoverand lose of vertical deflection. | ||
| Sony | KV2084R | AUDIO LOW; NO STEREO INDICATOR, REPLACE T-204 | Pin 13 of IC-201 measures only 0.83 volts instead of 4.8volts. | ||
| Sony | KV2084R | OSCILLATION IN PICTURE, REPLACE T-251 & C-256 | Unit would tune stations, but showed an oscillation in thepicture. The oscillation appeared sometimes as only covering part of thevideo, and other times covered the full screen. The interfering oscilla-tion was severe, and looked as if the fine tuning | ||
| Sony | KV2084R | PICTURE BLANKED, REPLACE R552 | Picture blanked. Hi V OK. Noticed negative voltage on baseof Q305, which the schematic calls out as positive. | ||
| Sony | KV2084R | CHANNELS NOT STABLE - PROBLEM WITH LOCK UP, SHORTED Q934 | The channels would take a couple of seconds to lock in and itappeared as if the unit was hunting. We found that there was no horiz.input on the upc - IC101/P.8. We traced the problem to a defective Q934/horiz. sync separator on the U board. | ||
| Sony | KV2084R | INT RED PICTURE, CRT | On both of these units the picture would intermittently turnlight red and the luminance level would drop. This would stay for abouta minute, and then the tube would snap, and the picture would return tonormal. | ||
| Sony | KV2084R | REMOTE CONTROL BUTTON FAILURE | Excessive and repeated remote control failures due to remotecontrol sheet rubbers are open. The following buttons are usually open:picture/volume/channel. | ||
| Sony | KV2084R | NO COLOR, REPLACE IC301 | No color, only black and white picture. | ||
| Sony | KV2084R | ADD, ERASE AND PICTURE BUTTONS WON'T WORK, CHASSIS POSITION | Chassis was not up against front bezel. | ||
| Sony | KV2084R | NO PICTURE, CRACKED BOARD | Unit would turn on, Hi V would come up, but no pix, blackscreen. Push button controls inoperative. No signal on key scan lines.Sleep light on. | ||
| Sony | KV2084R | WEAK SYNC, REPLACE Q203 | Unit had bend in picture and color hue was off. Traced theproblem to Q203 (A board), sync looked good but at emitter horizontalsync was clipped. |