Dicas Reparação SONY
Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | TCFX7 | INCOMPLETE INSTRUCTIONS IN MANUAL | Page 22 of S/M, instructions for servo adjustment areincomplete. Step 7 should refer to Pin 21 of IC902 for pulse adjustment. -HQ COMMENTS: As you pointed out, the TP (silk-screened as SPEED) isnot shown for the #7 in the adjustment procedures. The Pi | ||
| Sony | TAN88B | INCOMPATIBLE V-FETS | Replaced V-FETS with new ones and power supply fails. Butwhen a set of V-FETS from another unit are used, unit worked correctly. | ||
| Sony | STRVX550 | TAPE DECK PLUGGED INTO AC OUTLET ON BACK MALFUNCTIONS | Tape deck plugged into this unit STOPS/STARTS/REWINDS etc.automatically and randomly upon POWER ON/OFF activation. It is notedthis only happens when the speaker grounds are wired together or when unitis used with a speaker switch box that does not have | ||
| Sony | PSX75 | DEFECTIVE HALL IC D601 | The turntable motor did not turn although there was a kickpulse (current) through the motor coil. | ||
| Sony | PSX75 | NO STYLUS FORCE | The tone arm did not go down and there was no stylus force. | ||
| Sony | MTL10 | DETECTION SENSITIVITY ADJUSTMENT MISADJUSTED | Unit would not line up properly to load the first cassette. | ||
| Sony | M100B | TAPE JAMS | The unit jammed the tape intermittently. When it happened,the take up reel was not turning although the capstan and the pinchroller were turning fine. | ||
| Sony | ICF7750 | OPEN FOIL TRACE | Sound was very low and distorted or there was no sound atall. We found an open foil associated with R41. The foil looked finebut was open. Foil repair resolved the problem. Although this appearsto be a straight forward repair, it STUMPED the technici | ||
| Sony | CRF320 | BAD CONTACT ON SS-6 SWITCH | The unit came in with very poor sensitivity in AM, SW and LW.Checked and found there was almost no local oscillator signal at thecenter tap of IFT201 in the second mixer circuit. | ||
| Sony | CDP501ES | MISSING GROUND PATH | At the end of each selection of music unit would go intoPAUSE, no matter what position switch S917 was in AUTO/PAUSE. | ||
| Sony | XR75B | JAMMED TAPE | Tape jams or unit will not take up tape. Problem is withPart #318 on P51 S/M. Roller bearing on right side of tray is bent andloading mechanism cannot move smoothly. | ||
| Sony | WMF10 | NO FM | FM was not working. Only white noise was heard. Since therewas FM white noise, I suspected RF section was bad. | ||
| Sony | WMF10 | ERRATIC SPEED | The problem has been traced to poor solder connections onR904 and TH901. Often these two components have been installed offcenter. Resolding resolves the problem in about 50 percent of the cases.The balance of the units require replacement of R904/TH90 | ||
| Sony | WMD6C | NO SPEED CONTROL | The motor turned at maximum speed regardless of the functionor speed control. I replaced IC601 and FG901 but they did not help. | ||
| Sony | WMD6 | PAUSE DOES NOT WORK | All functions worked correctly except PAUSE. We found piece#387 not engaging #396. It appears that this was shipped from the factoryin this condition. There is no way for this to dislodge easily. -HQ COMMENTS: I checked using the tape transport which |