Dicas Reparação SONY
Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | STRVX4 | DEFECTIVE IC404 | We were unable to vary VC voltage to the tuner on this unit.The display worked normally. We found that there was no output from 11 ofthe PLL IC404. | ||
| Sony | STRV55 | LEAKY C101 | Only white noise was heard in FM mode. PLL tuning voltage(2.8-20V) did not change at all. | ||
| Sony | RS30 | OPEN R205 | Unit would not enter answer mode or playback OGM. OGM wouldbe put on tape with cue signal but not played back. Private message wouldplay back normally. Cue signal (Pin 2 Port C) on IC202 was 1.8K squareand unstable causing CPU not to read cue. This | ||
| Sony | RS20 | DEFECTIVE Q901 | When switching S502 from OUT to IN position and pressing C601for OGM recording stand-by, this unit rewinds the tape halfway, fastforwards, forwards, and then stops. When pressing S601 again to recordOGM, the alarm beep comes on, and it does not record O | ||
| Sony | PSFL1 | WORN RACK AND GEAR | When attempting to operate turntable drawer, a loud clickingcould be heard. Inspection of the rack and gear revealed the rack haddamage on the first tooth, and the gear also appeared damaged. | ||
| Sony | M102 | MOTOR WOULD NOT FIT | I found the mounting bracket to be incorrect in size and holespacing. KC told me that I was wrong and that the motor should work.They suggested that I reorder a motor, which I did, and this one came inwith the same problem. -HQ COMMENTS: Motor mounting | ||
| Sony | CDP101 | DEFECTIVE CX193 | Disc motor spins backwards on start-up and then reverses tonormal drive. No kick start and only 1.5 Vdc B+ at chip instead of 5 Vdc.Failure to accept disc after warm-up. VCD + focus bias out of adjustment. | ||
| Sony | CDP101 | DEFECTIVE KSS-100A | Skip of program material at random. Full and accuratealignment had no affect. Acquisition time is excessive and unit isvibration sensitive. | ||
| Sony | XR25 | INCORRECT MOUNTING OF FADER | Unit came in with no sound, amp chip was replaced. Foundfader control was mounted 180 degrees which caused the pins on the controlto short to chassis. Remounted fader control. | ||
| Sony | WM4 | BATTERY SHORTS | Not operating on batteries. | ||
| Sony | TAAX4 | ERROR IN MANUAL | On schematic, Page 27, and in unit, the capacitor for C905has a value of 0.82 uF at 250 volts. On Page 34, in the parts list thevalue listed is 1.2 uF at 250 volts, the part number is shaded becausethis part is critical to the power supply section. -HQ | ||
| Sony | STRVX750 | IC301 NEED TO BE REPLACED | In reference to T/N #8512, this STR-VX750 has the former IC301(8502) which causes the problem that had been thought to only occur inthe early production (806,000) STR-VX550. | ||
| Sony | STRVX550 | AMP OVERHEATS | When using amp on a 4 ohm load after 5 to 7 minutes powerchip will overheat and short. This is at 50 watts which is the spec. onthe service manual. On 8 ohm load at 50 watts, power chip runs extremelyhot, also. -HQ COMMENTS: We ran our unit into a 4 o | ||
| Sony | STRVX6 | LEAKY P405 | Ones digit of the display always shows 0 or 8. Checkedthe waveform at Pin 18 of IC401 (u-com) of this unit and the good unit(S/N 804552) as shown below. | ||
| Sony | STRVX4 | REPLACEMENT TRANSISTORS FAIL | The 2SC-1826 or 2SC-1986 is used as a regulator in the abovelisted models. When these parts fail and the part 8-729-398-62 is orderedthe part is subbed to a 2SC-2768. -HQ COMMENTS: 2SC1986 (8-729-398-62) does not sub into a 2SC2768 atKCP. However the |