Dicas Reparação SONY
Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | CCDV8AFU | NO CAPSTAN LOCK | In playback unit showed white noise bar moving through pic-ture. Checked all voltages at IC106, all good but Pin 25 showed only0.7VDC and would not change. Put scope on Pins 11 and 12. Pin 11 was OK.Pin 12 showed only noise. FL108 open. | ||
| Sony | D5 | RANDOM SKIPPING | Unit is randomly skipping. When adjusting tracking balancethe waveform is low, about 2.5Vpp instead of 5Vpp. | ||
| Sony | EVC8U | NO EJECT AND SHUTDOWN DURING PLAYBACK | 1) Tape unthreads during eject mode, but will not unload.After unthreading eject LED blinks. 2) During playback, unit stops afterabout 10 sec and eject LED blinks. | ||
| Sony | KV25DXR | INTERFERENCE IN PICTURE | This unit had an interference pattern in the picture, like aherring bone. | ||
| Sony | KV25DXR | NO RGB OPERATION WITH PC-701 | Inside the PC701 Pin 2 is shorted to Pin 28 with a shortingwire. In the DXR Pin 2 is 5 volts and Pin 28 is ground. | ||
| Sony | KX8200CD | NO ANALOG RGB, REPLACED IC108 | Digital RGB okay, no video on analog RGB. Sync was low atQ130 collector, found Pin 1 of IC108 shorted to ground. | ||
| Sony | CCDV8AFU | SHUTDOWN | Unit shuts down in about 10 seconds any mode. Checkedvoltage at PH601, 602, 603. Found voltage at PH603 Pin 3 to be 1.3VDC.LED side of PH603 open. | ||
| Sony | CCDV8 | TAPE COUNTER INOPERATIVE | Tape counter inoperative, all modes. All other functionsnormal. Checked voltage at PH602 Pin 3, found to be 1.3VDC. Comparedwith PH601 and PH603 Pin 3 showed 0.59VDC. LED side of PH602 open. | ||
| Sony | SLHF400 | CO-CHANNEL INTERFERENCE ON UHF CH. 21 FROM CH. 27 | Local UHF channels are ch. 21 and ch. 27. Co-channel appearsworse while viewing lower channel from the higher channel | ||
| Sony | KV25XBR | WHITE VERT. LINES ON CABLE | Group W Cable of Chicagoline on both sides of screen about 3/4 wide. | ||
| Sony | CDP70 | INTERMITTENT OPERATION | Sometimes unit works and can align completely but noticewhen door is open, display is out. Measured +5V supply and would loaddown to almost 0VDC when door was open. | ||
| Sony | KV1722 | DEAD | Starter transistor, Q604 would not turn off after start up,so R631 would overheat and burn out. | ||
| Sony | SL20 | PARTS | The schematic page 83 calls for Q501 to be a 2SC2785. Theparts list page 112 calls for Q501 to be a 2SC2458. Q501 in the unit hasa different transistor marking 603E or F. What is this transistor? -HQ COMMENTS: The correct P/N for Q501 is 8-729-245-83 | ||
| Sony | KV2670R | DELAYED TUNING, JUNGLE IC-301 | When switching channels, picture flickers and audio is mutedfor several seconds. AFT voltage at Pins 32, 33 of IC103 bounces untilpicture stabilizes. No horiz. sync pulse from Pin 3 of IC301. | ||
| Sony | WM10RV | MOTOR NOISE IN HEADSET | Harlan Maurer at the Minneapolis SSC reports that motor noisein one channel can be caused by a defective headphone jack. |