| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV20S10 | NO SYNC, REPLACED IC102 | Unit exhibits no horizontal or vertical sync and displaysred 3 lines at top of screen AKB ref. | ||
| Sony | KV20EXR20 | SHUT DOWN, REPLACED Q605 | Unit would power up and immediately shut down. Problemcaused by leaky transistor in Over Current Protect double latch circuit,Q605/G board. Problems with latch circuitry can be thorny. Problem foundby lifing significant loads and then monitoring sh | ||
| Sony | KV13VM20 | INTERMITTENT VOL AND CH OPERATION, WATT-SAVER BULB AFFECTS | Customer complained that unit would int. change vol. andchannel. Vol would start to rise by itself and not stop or channel wouldstart to change and not stop. Removing unit power would stop problem.CNV at SSC. | ||
| Sony | KV10FMR20 | NO AUDIO, REPLACED C252 | Unit had no audio in FM/Video or TV mode. Discover defective capacitor C252 on Y PC board. -HQ COMMENTS: C252 filter cap is located on the Y board on the9v supply line. Schematic grid location B-5 | ||
| Sony | FDT5BX5 | FUSE F602 BLOWS DUE TO INT HIGH CURRENT DRAW RESOLDER D505 | F602 blows causing no pix. Replaced fuse found unit worked,put amp meter in place of fuse, unit showed 600-900 ma current drawaveraging 750ma with normal pix. Found cold solder on D505 damper diode.After resolder unit had 490-680ma, current draw aver | ||
| Sony | FD525 | NO RASTER, REPLACED C803 | No raster, Hor Out TRS gets out. Traced waveform @ IC201, Pin17 (Hor Drv) to base of H drive TRS - OK. Checked signal on other side ofC803, at Hor. Output Q802 base. Severe loss of signal. | ||
| Sony | SPPA450 | FLYWHEEL BROKEN ON MECH | Unit had no answering machine funtions and had a rattle.Found flywheel broken from capstan shaft assy. | ||
| Sony | TCWR645S | DECK B INOPERATIVE - RESOLDERED CN81 | Deck B would not always play tapes. Deck B would notdistinguish between different tape types. | ||
| Sony | TCWR645S | DECK A NO FUNCTION - RESOLDERED CNP81 | No function on A deck. | ||
| Sony | TCRX79ES | EATING TAPES, PLAYS TOO FAST - REPLACED M1053 | Unit has fast playback. M1053 capstan motor went defective,speeds up to 5014 hz normal instead of 3000 hz. | ||
| Sony | TADL100 | NO POWER - REPLACED POWER TRANSFORMER | No power. | ||
| Sony | TADL100 | NO AUDIO - REINSERTED CNP903 | Unit had no audio. -SOLUTION : Connector CNP903 not plugged in. This connector suppliesvoltage to decoder board and main. | ||
| Sony | TADL100 | FUNCTION LIGHT FLASHES - ADJUSTED RF | Function light on digital signal transfer box flashes andunit has no audio on functions that are flashing. | ||
| Sony | STRGX69ES | NO AUDIO WHEN LOUDNESS BUTTON IS OFF - INSERT SHORTING PLUGS | No audio when loudness button is off. | ||
| Sony | STRGX50ES | UNIT IN PROTECT - REPLACED LEAKY D714 | Unit in protect. |