Dicas Reparação SONY
Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | CFS500 | TRANSPORT JAMS | The unit's tape transport jams in the attempt to record forno apparent reason. Button lock plate bar #352 is bent at the recordlever #344. -HQ COMMENTS: I suspect abnormal customer force applied to the recordbutton while pressing another button at the | ||
| Sony | CDP101 | BREAK IN FOIL | Although the unit played discs, there was no sound, no counterdisplay. GFS was high and the eye pattern was good. But there was nodata at Pin 17 of IC503 (CX7934). | ||
| Sony | XR85 | LOADING GEAR | Loading gear in unit is not being pushed back to mesh withdrive gear, therefore, the tape is not dropping. When pushed manually,the gear meshes and initiates the loading sequence. -HQ COMMENTS: Replacing the cassette loading gear spring (#335) shouldpe | ||
| Sony | XR70 | PINCH ROLLER SHAFT | Pinch roller shaft loosening from chassis assy causing to eattapes and have speed changes. | ||
| Sony | XR70 | DEFECTIVE Q804 | Tape will not load (drop) properly every time it's loaded.Lever assy in question cocks the drop mechanism when it catches onthreading arm shaft (P/N 3-573-870-0). -HQ COMMENTS: When the cassette springs back out a little after beingloaded into the carri | ||
| Sony | WM5 | LEAKY Q101 | One channel dead on cassette, radio works fine. | ||
| Sony | TCM7 | ON SERVICING | No way with unit opened up to apply power to any mode andobserve voltages gears operation or functions. We need some kind of jigso that audio board can be remote from mechanism and still be operated.This also applies to Model WM-7 as well. -HQ COMMENTS | ||
| Sony | TCPB10 | SHORTED D301 | One servicer found NO POWER in several unit. All of them hada defective bridge diode (D301). One of the rectifiers connected to thenegative side of the bridge was shorted. | ||
| Sony | STRVX550 | DEFECTIVE IC301 | Memory would not hold functions. Battery and power supplygood. | ||
| Sony | STRVX550 | TUNER NOT ALWAYS FUNCTION | Output would switch on and off. Tuner would not alwaysfunction. Display intermittent. | ||
| Sony | STRV25 | DEFECTIVE RELAY | When the unit is cold, the speaker protection relay (RY601)clicks, but no audio comes out. Opened the case of the relay and foundthe flux from PC board which was preventing the contact of the switchinside the relay. | ||
| Sony | STR454 | OPEN R447 | Preset memory would not take stations, no last stationrecalls. | ||
| Sony | SPP11 | ERROR IN MANUAL | The part reference is indicated on the printed circuit boardsare wrong. In the base unit, RV9 is marked R59. In the handset, C34 ismarked C37. This is one of the caps to be replaced during channel changemodification. | ||
| Sony | PCM701ES | LEAKY D201 | Volume control appeared to be defective. It was noisy whenvaried. Input to Q201 always had a negative voltage present. This wascaused by a leaky D-201. | ||
| Sony | ICFC10W | POP IN AUDIO | Pops in speaker when radio alarm is activated. Seems to becaused when Q4 is switched. There is DC differences between switchedgrounds. -HQ COMMENTS: The mild pop prior to audio is normal and as you suspectedcannot be eliminated. Further efforts to el |