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Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KPR46XBR15 | INTERMITTENT SNOW AND STATIC, REPLACED TUNER | Main picture was intermittently going out to grey/snow rasterwith heavy static in audio. PIP was OK. | ||
| Sony | SLV575UC | AUDIO BUZZ IN HIFI PB- SELF RECORDINGS. ADJUST CTL HEAD | Buzzing noise on self recorded tapes only. Monitoring RFenvelope I noticed a gap between A and B heads areas. The gap disappearsduring the last few seconds of each recording. | ||
| Sony | CDPC325 | DRAWER OPENS AND CLOSES CONTINUOUSLY WHEN POWERED ON | When unit is powered on, the drawer will open and close untilunit is turned off. I found the right side of MCB had come loose fromfinger snap. This was shorting MCB to bottom of metal case. (I alsonoticed that the left side of MCB was in the correct p | ||
| Sony | SPPS10 | INTERMITTENT TX IN CHANNEL 9-REPLACE C-539, P/N 1-163-183-00 | When twisting the main PCB, the transmit frequency on channel9 would jump from 49.990 MHz to 50.064 MHz. Going to the channel 9 TXcrystal X505, I discovered that when you twist the PCB, the frequencywould change. After visibly checking the board I fou | ||
| Sony | TCWR670 | TAPES STUCK IN UNIT WHILE DUBBING - Q701 FAULTY 8-729-620-05 | While dubbing, both decks locked up, but display stayed lit. | ||
| Sony | CCDF40 | DISTORTED COLOR (SLIGHT DISTORTION) L381, VA40BD | Found noise in color which was a very minor wave, littlenoise. | ||
| Sony | CCDFX410 | NOT RECORDING VIDEO BUT PLAYBACK IS FINE/ L002, CS31 | No video is recorded on tape, but playback is fine. I checkedfor (Rec C RF) and (Rec Y RF) signals and all were there. I also checkedd.c. voltages and found no voltage to video heads. | ||
| Sony | KPR41EXR95 | NO RECEPTION ON CHANNELS 2 THROUGH 6., REPLACED TUNNER | Channels 2 through 6 will not function, all other stations areOK. Tuner pins voltages measured normal. | ||
| Sony | KV27XBR35 | INTERMITTENT UHF TUNING, REPLACED TUNER | UHF channels distort after about twenty minutes of operationand then all UHF channels will be lost. VHF is not affected. | ||
| Sony | CDXA20 | JAMMED MECHANISM, E-99 DISPLAYED (CLEAN Q-403 ON EHS BOARD) | During operation, if switching from disc 1 to disc 10,elevator would go too high or stop in wrong position. While checking thetiming of large elevator gear, I found the top looked scraped. So Ichecked Q403 on EHS board and found the slot for phototrans | ||
| Sony | CCDFX410 | NO VIDEO IN PLAYBACK/C6, CS-31 LEAKY | No video in playback but camera and record worked fine. Isuspected IC1, but that did not fix the same problem. After checking allD.C. voltages, the voltage on pin 31 was 2.8 Vdc, and it was supposed tobe 2.1 Vdc. All other voltages were correct and on | ||
| Sony | ITA4000 | BUZZING SOUND IN HANDSET - REPLACE IC-301, P/N 8-759-979-34 | There was a loud buzzing sound in the handset. The speakerphone was OK. | ||
| Sony | KV32XBR95S | PIN CUSHION DISTORTION, REPLACED Q-506 | Picture was bowed in on the sides. | ||
| Sony | CCDTR71 | NO PB VIDEO/RESOLDER L007, VS-93 | No PB video. | ||
| Sony | STRAV270X | UNIT INOPERATIVE - B+ SOLDER SHORT TO GROUND ON DISPLAY BD | B+ regulator Q701 was heating up and R703 was glowing hot.When CNS501 is disconnected, the regulator runs normally, thus short is ondisplay board. After troubleshooting display board, I traced the shortto an area where IC-302 would be placed when MCB is |