| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV2649R | NO SOUND, REPLACE IC605 | No sound in left or right channels. | ||
| Sony | KV2648R | NO BAR DISPLAY, REPLACE SHORTED Q4028 | No bar display in any function except if volume was atmid-range. Picture control would increase or decrease length of bardisplay. With color, hue or brightness there was no bar display.Pressing hue, bar was all green. Checking input to counter reset, | ||
| Sony | KV2647R | WHITE H LINES ON THE PICTURE, REPLACE Q001 | The picture had white horiz lines producing a venetian blindeffect. There was also a buzz of 7-8kHz in the sound. We found that theVC line was not being properly filtered. Found Q001 (FET) in the activefilter to be defective. | ||
| Sony | KV2647R | DARK PICTURE, SHORTED C725 | This unit had a dark picture and the picture control did verylittle. Found C725 shorted. | ||
| 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 | KV1953R | NO TUNING OPERATIONS, REPLACE IC003 | Channel up or down inoperative. Also unable to erase anychannels. No logic change at Pins 1-4 on IC003. | ||
| Sony | KV1952RS | NO FUNCTION, REPLACE X2001 | Unable to control volume picture or channel change. LED wouldnot light. Found osc crystal low in amplitude at IC2001. Freezingcrystal would change amplitude from 20mV to 2V. | ||
| Sony | KV1946R | DARK PICTURE, R715 OPEN | Picture was dark. Measured screen voltage. Range was from105-185 Vdc. Found R715 reading in the megohms. | ||
| Sony | KV1922 | PICTURE DISTORTION | Set had pincushion problem. Traced problem to Q514. Signalat collector was distorted. | ||
| Sony | KV1915 | DARK PICTURE | Picture was very dark. No brightness and no 900V to CRT. | ||
| Sony | KV1914 | TUNING DRIFT | Stations could be locked in, but then would drift off. Pin 10of IC201, AFT amp out was floating, and voltage was varying. | ||
| Sony | KV1747RX | DARK PICTURE | Color information was present but there was no luminance atoutput of IC341. Input signal was OK. | ||
| Sony | KV1713 | PICTURE DISTORTION | Short width - from 1/2 to 1 inch. Problem starts as PINproblem. Servicer then finds picture just a little short of width. Mayhave been like that for some time. | ||
| Sony | KP5040 | MECHANICAL MISOPERATION, GREASED SMALL GEAR SHAFT BEARINGS | The door would open only halfway and the motor would shutoff. The door would not close more than 2 inches before shutting off.There was no grease on the small gear shaft bearing. | ||
| Sony | KP5020 | OVERSCAN GREEN CRT | Green tube was overscanned. Traced problem to Q5337.Transistor was leaky from collector to emitter. |