Dicas Reparação SONY
Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | TAAX320 | SUB PART DOES NOT FIT | Original switch part number 1-553-318-41 subs to 1-553-318-31.The sub part will not mount due to the screw holes that mount it notaligning with the holes in the frame of the unit. Please advise. -HQ COMMENTS: I had KCP check this out. The spacing betw | ||
| Sony | BMC550 | POOR COLOR - VERY LOW GREEN AND BLUE | The unit recorded very poor color with almost no green andvery little blue. We found the problem to be caused by a (noseeum) acrossRV70 on the PM-2 board. There was approx. 150 OHMs to ground from thehigh side of the control. This of course loaded dow | ||
| Sony | KV2675R | UNIT STAYS IN SLEEP MODE, IC-104G | The unit was in the (Sleep) mode and acted as if the UPC wasnot receiving a vert pulse. Upon examination, we found the vertical pulseto be only 1VPP at IC103/p.4. This was caused by a defective charactergenerator, IC104 loading the line down. Replacem | ||
| Sony | KV25XBR | SCREEN HALF DARK | The left side of the screen was lighter than the right. Also,the video was smeared. We found the problem to be caused by C1658-it hasopened up. This capacitor filters the B+ to the RGB drivers. Replacementresolved the problem. -HQ COMMENTS: C1658 is | ||
| Sony | VTX1100R | DISPLAY UNSTABLE | The display was very unstable. We found that there was ex-cessive noise on all the B+ lines. This was due to an open decouplingcapacitor - C135 in the DC-DC converter. Replacement resolved the pro-blem. The tip off was the fact that the converter was | ||
| Sony | KV2735R | PIC INSTABILITY WHEN USING VIDEO DISC PLAYER, Q-353 REMOVED | When using a video disc player, the picture would jump ver-tically whenever there were rapid changes in brightness. We resolvedthe problem by defeating Q353. This prevented the vert. pulse from beingexcessively processed. All input modes work correctl | ||
| Sony | SL300 | WILL NOT THREAD TAPE ALL THE WAY | The unit would load the cassette and thread about 1 inch andthen eject the tape. We found that the capstan motor was not turning andwas the cause of the problem. Replacement resolved the problem. | ||
| Sony | SL250 | NO TUNER VC | No VC voltage for the tuner, unable to tune differentchannels. (Also S/N 810516, 813107) | ||
| Sony | SLHF1000 | SERVICE BULLETIN NO. 312 | This service bulletin has incorrect information. The correctpart number for Q830 a DTC144ES is 8-729-900-89. Also the diagram forVI-18 mount side is incorrectly drawn. It should look like this correctedversion. -HQ COMMENTS: A revision on this servic | ||
| Sony | CDPC5F | SERVICE MODE TEST PROCEDURE | The method of grounding pin 2 of CNP 521 and pin 8 of IC505does not enable the disc to spin. It will check front panel functs. butcannot make RF adj. or EF adj. -HQ COMMENTS: This method came from Tokyo. We did not know this pro-cedure did not work un | ||
| Sony | EVC8U | NOISY PICTURE (PLAYBACK) | Tape recorded on this unit played back ok on another unit. InPlayback mode, picture very noisy, looked like a de-tuned picture fromtuner. Inspection revealed excessive noise on pins 12 and 13 of IC-101,AR-4 board. Also, noise present on 5 volt line on | ||
| Sony | D10 | NO SPIN AND NO MOVEMENT OF OPTICAL ASSEMBLY | The turntable spins very weakly and makes very loud noise.The spindle motor was moved inside between two motor brackets. The sledmotor does not move at all. | ||
| Sony | KV2785R | DISTORTION IN STEREO MODE, ATTN SUGGESTION | The unit would occassionally develop distorted audio in bothchannels when in the stereo mode. It sounds as if there is an audio out-put starting to break down - popping, crackling, distoriton. The problemwas particularly pronounced on Ch. 4 which is ve | ||
| Sony | CDP750 | FOP ASSEMBLY DOES NOT MEET DISC | FOP assembly does not come up to meet disc. | ||
| Sony | D3 | NO OUTPUT | No output, no 9 volts to regulator. |