Dicas Reparação SONY
Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | XR740 | UNIT WOULD LOCK UP WHEN SEEK BUTTON WAS PRESSED | System control lock out would occur when seek button wasdepressed, otherwise all function buttons worked OK. By shutting unit offand then back on, it would work again until seek button was pressed.This symptom was noted on another unit (XR-787R) in the | ||
| Sony | XR787R | UNIT WOULD LOCK UP WHEN SEEK BUTTON WAS PRESSED | All functions worked OK until seek button was depressed.Then unit would momentarily search up and then stop. At this time,system control lock out occurred that is, no function button wouldoperate. By shutting receiver off and turning it back on, it wou | ||
| Sony | CDP310 | DEFECTIVE OPTICAL DEVICE | Unit will not read TOC or play discs. | ||
| Sony | EVS700U | PCM DROPOUT | Dropout occurs during PCM mode. Stereo light flashes. | ||
| Sony | KV25XBR | NO PICTURE - SLEEP LIGHT ON | These three units had a mass failure of the velocitymodulation circuit. D1651 shorted and opened the resistors and shortedthe transistors. The C board had dark spots on it around the resistors.The symptoms on these units were only sleep light on with n | ||
| Sony | KV2775R | HORIZONTAL SQUEAL BY YOKE | This unit had an intermittent horizontal squeal caused bythe yoke. Attempts at covering the coils with silicone rubber, asinstructed by the Tech. Dept., did not resolve the problem. | ||
| Sony | KV1926R | INTERMITTENT CONVERGENCE, CRT | This unit has intermittent convergence caused by the tube. | ||
| Sony | HVM302 | NEED P/N FOR FORMER IC3 (DF-BD) - SEE B & W S/B #75 | S/M doesn't show P/N for former IC3 MSM6205GS-K (24 Pin). -HQ COMMENTS: P/N listed in Semiconductor Replacement Handbook is8-759-919-98. We will update this S/B to include this P/N. | ||
| Sony | EVA80 | UNIT WOULD NOT LOAD | Unit would not load. Gear retaining clip missing for gearassembly. Could not be found anywhere in the unit. | ||
| Sony | CDXR88 | DC-DC CONVERTER | Unit dead. No display. All fuses good. This was the secondunit the customer has had, first unit failed in the same manner. Checkedfor 12 volts OK, 30V OK -5 was 1.13V and -5 OK. Isolated +5 volt linefrom converter. Found no shorts, used bench suppl | ||
| Sony | D55 | UNIT WOULD NOT RUN | Unit would not run. Found no -5V. DC-DC coonverter was bad.Replaced DC-DC converter but still no -5V. | ||
| Sony | KV25XBR | OUT OF VERTICAL SYNC | Out of vertical sync - w/no color and raster is dark. | ||
| Sony | WMF70 | HEADPHONE PLUG DAMAGES JACK | Plug on MDR-A10 headphones, which come with WM-F10, seems tobe too long. If fully inserted, they make poor contact and one channelis intermittent. Dealer here has complained of at least five units likethis. | ||
| Sony | CCDV3 | PIGGYBACK IC | CCD-V3 has piggyback IC on IC301. What do you do to changeIC? -HQ COMMENTS: First 3000 units in production have this piggyback IC. Wewill issue a S/B shortly on this. | ||
| Sony | VTX1100R | DEAD SET | When unit is first turned on, there are no functions fromremote control hand unit, except on/off function. Manual functions allwere OK. After about 10 minutes, hand unit functions were all normal.Inspection revealed signal present at base of Q213, but |