| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | FD30A | POOR VHF RECEPTION, ANT CONTACT PLATE A MISSING | The reception on VHF low channel was very poor. | ||
| Sony | KX2501 | MECHANICAL POPPING NOISE, TIGHTEN CABINET SCREWS | The customer said that the set made loud popping noises evenwhen turned off. The sounds were caused by the cabinet contractingduring temp changes. We found the screws mounting the mask to the maincabinet loose by 2-3 turns each. | ||
| Sony | KX2501 | IMMEDIATE SHUT DOWN, REPLACED R1602 | Unit would go into shut down within 2 minutes of turn on.Found R1602 open. Replaced with another 24 ohm resistor and performedmanual check for shut down circuit. | ||
| Sony | KV2649RX | DARK PICTURE, ADD CAP TO C546 | When viewing scrambled channels using the Jerrold cableconvertor box, the picture is very dark with smeared reds. | ||
| Sony | KV2648R | AUDIO NOISE IN MATRIX, RESISTOR CHANGE | Whistle in matrix audio only. The countermeasure given to meto resolve this problem worked. | ||
| Sony | KV2647RX | PICTURE DISTORTION, POOR GROUNDING AT RCA TYPE CONNECTOR | Weavy red lines from top to bottom about one inch thick onlow VHF channels. Also radiating to other sets on same antenna line. | ||
| Sony | KV1515 | BUZZ IN SOUND | Buzz in sound on SHOWTIME scrambled cable channel only. Allother channels OK. Verified problem, noted that several older Sonychassis in same house worked OK (including KV-1710/1941R/8000). | ||
| Sony | KP5040 | HORIZ. LINES IN THE PICTURE, GROUND LOOP CHANGED | There was a drive line in the picture which was also radiatingto nearby sets. We found this interference to be caused by the horiz. barosc. in the crosshatch generator (BA board). We could find no defectivecomponents and assumed the problem to be a gro | ||
| Sony | FD20A | NO RASTER, REPLACED CRT | This tube had a shorted anode causing no raster. The HV waslow. | ||
| Sony | KX2501 | SHUT OFF, REPLACED IC651 | Set shuts off just after turn on. Found 140V B+ line goingup to 250V. | ||
| Sony | KV3000R | DEAD | Dead. Found 150VDC fuse on the F board open. Second problemis both doors were slipping on the track. Repositioned door motor. Thisis the second unit I have found that the nuts that hold the motors wereloose. Upon closing door would reverse and open. | ||
| Sony | KV2649R | INTERMITTENT FADE OUT, CLEANED CRT PINS | Picture would fade out to a dark raster, very intermittent.All voltages checked OK. | ||
| Sony | KV2647RX | BLACK LINES ON THE SCREEN, REPLACED VHF TUNER | Two black lines on left side of screen. | ||
| Sony | KV2647RX | NO RECEPTION ON CABLE, REPLACED C208 | Set would not receive channel 2 on cable. All other channelsOK. Trimming of AFT coil on the board (T203) did not help. | ||
| Sony | KV2647RX | UNEVEN SHADING AND JAIL BARS, SHORTED L204 | Uneven shading darker left to right, and jail bars. Jailbars show up on dark screen. Shading shows up also on dark picture. |