Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por:![]() |
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Sony | STRD990 | UNIT CYCLES OFF IMMEDIATELY WHEN POWERED UP | Unit immediateley shuts off when powered up. Fuses were allfine. | ||
Sony | TRWR670 | AFTER UNIT HEATS UP, HEAD ASSEMBLY JUMPS ERRATICALLY, IC802 | After unit warms up, heads continue to jump erratically. | ||
Sony | SEQ711 | COULD NOT SELECT BETWEEN TAPE AND LINE FUNCTIONS | Unit only worked through line inputs. It could not switch totape mode. | ||
Sony | TADL100 | NO AUDIO/COMMUNICATION IS OK | No audio out of decoder board. EFM is ok. Found cold solderjoint on X-201 and case ground shield. | ||
Sony | CFD757 | DISTORTED AUDIO ABOVE LEVEL 5 - L-308 (OPEN) | Audio distorts above level 5. Sounded like feedback. I couldsee on scope distortion at selector IC. Finally disconnected MIC AMP ICand distortion won't go away. Ohmed out MIX MIC jack and found it not tobe grounded through L-308 which was open. | ||
Sony | TADL100 | DISTORTED AUDIO | Audio distorted, signal clipped. | ||
Sony | CFD460 | CD PLAYS INTERMITTENTLY | CD would play intermittently. Q-706 junctions checked ok withan ohmeter. | ||
Sony | STRD790 | NO DISPLAY AND UNIT WORKS | Checked AC voltage and +30 volt lines to display and both weregood. Replaced FL-101 without resolving problem. Traced the FL clock andFL data to system control IC-202 pins 18 and 19. Found below standardsoldering on this IC. | ||
Sony | KV27EXR15 | PICTURE GETS DARK INTERMITTENTLY, RESOLDERED R-739 | Picture gets very dark intermittently. It shows color only. | ||
Sony | CCDFX410 | UNIT CHATTERS WHEN FULLY LOADED/UNLOADED | Using the mode box when unloading STOP and FWD lights wouldkeep repeating. | ||
Sony | STRAV1070X | ERRATIC SYMPTOMS | Servicer has four units with the following symptoms:1. Remote may not work. 2. On and Off by itself. 3. E is on display.4. No display. 5. Surround and DRLC relays On and Off by themselves. 6.Cannot turn unit off. Procedure from service bulletin No. | ||
Sony | KV20EXR20 | LOUD MECHANISM HUM, GLUED SHIELD (T-602) | Metal shield around T-602 is loose, causing mechanical 60Hzhum or buzz. Have seen this on sevreal other units also. | ||
Sony | CDXA55 | PART NUMBER CORRECTION: CONNECTOR FLEXIBLE BOARD (REF. 102) | This flex cable does not fit in unit. This part # shows upin the system for model CDX-U300. The part number taken from the flexconnector of the CDX-A55 is 1-643-777-11, which substitutes to1-646-391-11. | ||
Sony | SPPA60 | HANDSET TRANSMIT FREQUENCY IS LOW | X-501 is defective preventing IC-501 (PLL) from operatingproperly. X-501 is producting a low amplitude which is not sufficient tocorrectly run IC-501 (PLL). This also prevents the TX frequency frombeing adjusted to the correct frequency. Also applies | ||
Sony | SPP75 | HANDSET TRANSMIT FREQUENCY HIGH OR LOW - REPLACE X-651 | X-651 is defective preventing the adjustment of the handsettransmit frequency. The TX frequency can be either high or low. I haveseen many of both circumstances. Also applies to serial number 1127339. |