Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
---|---|---|---|---|---|
Sony | XR780 | AM/FM TUNER LOCK-UP | When advancing tuning manually, tuner would advance approx.2/3 of the way up the band normally, after which point the display wouldcontinue to advance, but actual station tuning would not. In scan mode,tuner would advance 2/3 of the way up the band, aft | ||
Sony | XR66 | SCHEMATIC ERROR - POWER PCB | Seems radio would not turn off when ignition switch is off.Found power PCB not etched properly causing continuity between yellowlead (back-up) and red lead (acc). | ||
Sony | M80 | REC/PLAY "U" SPRING | Need P/N for U spring that operates R/P SW. | ||
Sony | KV25DXR | HMH NOT LOCKED | Home management helper program was out of sync. Looked likea lot of dashed lines. | ||
Sony | CCDV8AFU | INTERMITTENT BREAK-UP IN PICTURE/SPEED CHANGE SP/LP | Record OK. During playback any tape including self-recordedpicture would break-up with white streaks and speed would change back andforth between SP/LP modes. Troubleshooted ATF circuit to no avail.Changed UI-6 board with known good board, same thing. | ||
Sony | KPR4110 | INTERMITTENT PICTURE, REPLACED IC-6006 | This unit had intermittent muted video (no raster) whentapping on IC6006 or IC6008. The picture would flash to black. | ||
Sony | KV1981R | NO DISPLAY, OPEN L101 | Unit had no on screen display. Found L101 open. | ||
Sony | CCDV8AFU | BREAKS TAPES ON EJECT | The unit breaks or streaks the tape on eject. We found theproblem to be caused by guide number 8. The guide was severely pinchingthe tape. This of course lead to excessive take up torque. Surprisinglythe unit worked fine in PB and REC. Readjustment | ||
Sony | KV2647R | POOR COLOR, B AND G WIRES TO C BOARD REVERSED | The unit had fairly good B/W but the color picture definitelyindicated that there was some sort of demodulator problem. It was notpossible to obtain the correct color bar display - no yellow or magentaand the red, blue and green were misplaced. The ser | ||
Sony | SLHF900 | UNIT INTERMITTENTLY CHANGES CHANNEL INDICATION | Intermittently the channel indication on the display tubewould change. Eg. if channel 11 was tuned in, intermittently the displaywould read 123 and then change back to 11. There was no change in videoor audio information. We found the RQST, data and c | ||
Sony | FD40A | ABSENCE OF VIDEO, ROTATED YOKE | Complaint was absence of video, raster was OK. Please notethat if anyone has replaced the picture tube on these units and acci-dentally installed the yoke 180 degrees out of position, the receiver willnot produce video. | ||
Sony | KV25XBR | NO RASTER - NO REMOTE CONTROL FUNCTION - SLEEP LIGHT ON | No raster - no remote control function - sleep light on.First checked for raster by turning screen control up, raster was visible,checked voltages at A-13 5V was low, checked Q251 OK checked Q251 leaky. | ||
Sony | KV2782R | VERTICAL LINES AND VIDEO COLLAPSED, REPLACED YOKE | At turn on a 2 wide bar appeared on the screen with verticalretrace lines. Scoped Pin 2 of IC501 on D board the vertical pulse had alot of noise and Pin 5 read 6V. Checked all components in the area andused freeze spray unit OK for about 5 min. Traced | ||
Sony | CDXR7 | REPLACEMENT OF DISPLAY DRIVE PC BOARD ASS | Several CDX-R7s with cracked etchings on the display drivePCB assys. Particularly right at the solder connections to the display(front panel) PCB. The face plate cannot be removed more than once or theflex cable breaks due to the angle at which it must | ||
Sony | SLHFR90 | SHUT DOWN IN PLAY MODE | Unit would shut down intermittently in play, FF and REW OK. |