Dicas Reparação SONY
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV2670R | INTERMITTENTLY TUNING DRIFTED OFF, LEAKY C-202 | Intermittently tuning would drift off. Found that when we usea tuner sub that the AFT pins out of VIF chip would change. Pin 6 of IC20would go approx. 5VDC. This was what was driving the tuner off station.Pin 5 was 0V but pin 7 which should be 3.6VDC | ||
| Sony | STRVX350 | NO AM OR FM | No AM or FM. Display readout was ok and unit would scan butit would not lock in on signal. No variation of VC voltage was noted.VC voltage was short .3VDC and would not vary. DC voltage on pin 10, IC20was locked on 4.7VDC. I was able to locate defect | ||
| Sony | CDP7F | CD WILL NOT PLAY UNLESS UNIT IS UPSIDE DOWN | Unit would play if upside down. In normal position you canhear clicking noise during focus search. | ||
| Sony | SLHF860D | CLOCK GAINING 20 MIN/HR | Clock gaining 20 min/hr. | ||
| Sony | SLHF860D | PICTURE BREAKUP DURING PICTURE IN PICTURE MODE | During picture in picture, inserted picture was broken into 5horizontal lines across entire bottom of screen. | ||
| Sony | CFDD77 | SERVICE MANUAL CORRECTION | P40 of manual shows connection to OV ground for FE, TE adj.Should really be connected to 2.5V reference, CN721, pin 10. -HQ COMMENTS: You are correct. The ground input of the oscilloscopeshould be connected to Vref., pin 10 of CN721. We will inform To | ||
| Sony | ITK300 | SIDETONE/VOICE OUTPUT LOW IN AMPLITUDE | Sidetone and voice output low in amplitude. Receiver sectionok, tone dialing ok. Found R116 unsoldered at pin 15 IC101 speech networkchip. | ||
| Sony | CDP110 | SPINDLE MOTOR RUNS BACKWARDS | Spindle motor runs backwards. Unit was serviced at a dealerwhere the spindle motor had been replaced. | ||
| Sony | KV2782R | INTERMITTENT SHUT DOWN AND/OR HORZ FREQ DRIFT, REPLACE R-515 | Horz. freq. would drift off. A service call made to re-adjusthorz. freq. control. Customer then complained unit would shut down sometime and horz. would drift. Many parts were tried before R515 was con-firmed. SOLUTION: Replace open resistor (R515). | ||
| Sony | ITA550 | UNIT LOCKS UP | Unit would take 1 message then lock up. | ||
| Sony | TCU270 | CAPSTAN MOTOR IS ALWAYS ENERGIZED | This unit maintains capstan motor running for as long as thesystem power is activated regardless if the cassette deck is in the oper-ating mode. This causes excessive wear on the mechanical components. | ||
| Sony | KV1972R | WHAT IS FUNCTION OF DI0DE/NOT LISTED ON DIAGRAM | Diode is mounted between pin 4 and 7 of IC105. Diode notlisted in manual. -HQ COMMENTS: The diode itself is as follows: RD 13EB2, part number8-719-100-68. If servicer replaces the IC105/uPD6250C, this diode is nolonger necessary. (The diode is just | ||
| Sony | SLHFR70 | NO TUNER AUDIO | No tuner audio. TA mute (IC301-11) high. Found L006 on TI5disconnected at collector of Q003, preventing H sync from getting to IC301on SA10. | ||
| Sony | CCDV9 | SERVICE MANUAL ERROR | Part number listed in manual (above) is incorrect. It is forCX522-153. Research revealed that the correct part number is 8-759-112-97for the UPD78112GF-505-3BE. -HQ COMMENTS: Please refer to service bulletin CSV-3 No. CAM0032. | ||
| Sony | SLHFT7 | INTERMITTENT NO AUDIO (R-CHAN ONLY) | Ckt. board pattern open from pin 15 of IC003 to pin 2 of IC202(via C201). |