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Sony Repair Tips




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Search: sony
Results: 20100
Make Model Symptom Problem Solution By
SONY DTC75ES
Troubleshooting digital circuits Intermittent audio distortion. found that using a leaderlb05860 waveform monitor hooked up to the digital output quickly demon-strated that one unit had a problem with it's digital circuit and onedid not. viewed the digital output on rear panel with th
SONY DTC700
Troubleshooting digital circuits There were two dtc-700s in the shop both had intermittentaudio distortion. found that using a leader lb05860 waveform monitorhooked up to the digital output quickly demonstrated that one unit had aproblem with its digital circuit and one did not. viewe
SONY DTC700
No sound The unit had no sound. looked at coaxial digital out withscope. found it distorted even in stop mode. checked ic-307 x-302 andx-303 waveform. found both crystals producing a distorted waveform.found x-303 was bad.
SONY SLV757UC
Intermittent shut down Found weak drive voltage from pin 11 of ic-001 on md-22board causing flat spot on drum motor.
SONY ITA600
Main pcb has wrong micro installed Boards coming from kansas city have wrong micros installed.the correct ic number is tmp47c47n-9613. the ic in the new boards istmp47c47n-9635. these ics are not compatible.
SONY TAM50
No operation of tape transport No operations of tape transport i.e. pinch roller would notengage gear, reference no. 75, was not engaging due to the washers,reference no. 72, being gone.
SONY SPP150
Unit works o.k. in norm but dead in batt save mode. Unit works fine in norm mode, however no action in batt savemode when talk is pressed. ic201/pins 12 and 29 went correctly from highto low when the mode switch was switched from norm to batt save,indicating a good switch. ic201 was replaced to no avail.
SONY SLVR5UC
Cannot set timer function When trying to set timer, after entering all information onremote it doesn't work. when the transmit button on the remote ispressed, the vcr indicates it has not received the information (bymultiple beeps) and the timer is not set. all other remote fun
SONY KV1981R
No main audio - low sap output, replace ic-810 Unit came in with multiple problems (lightning damage) inclu-ding no audio, ic-810 was changed, still no main audio, some sap. inputmpx (pin 1, ic-810) was present. pin 14 showed 0v (sap mute) pin 29 (l &r out) had output but no signal on the other sid
SONY CDX6020
No preset memory for radio stations Unit would not preset audio station memories. stations andbuttons functioned normally but when memory 1-6 was attempted unit wouldnot hold and would revert back to prior selection.
SONY HSTV102
Deck b records from deck a but not other power supplys Tape deck b would only record from deck a not from otherpower supplys such as tuner or cd. found voltage at pin 13 of ic-502 was high(+6 volts) regardless of deck a being in stop or play mode. unsolderedpin 13 from the pad and still had high voltage on the p
SONY SLV70HF
Missing ground in switch block schematic The schematic of the switch block (page 158) does not show theground reference connection for most of the buttons. only the odd anderase buttons are shown to have a ground.
SONY STRD2020
Intermittent loss of audio Low current failure. loss of audio signal all modes, and allfunctions. tapping unit may cause or correct problem.
SONY TCK444ESII
Replacement of r/p head When replacing r/p head, it is very difficult to align and ad-just. particularly bias adjustment. record output is very low. the partsupplied was a replacement part no. original 8-825-500-31. it wassupplied with no information on connections which co
SONY TCRX420
No functions Display flashes and function lights blink - no functions work.replaced micro-p, fl tube, rectifer diodes-all voltages up and correct.noticed some pulsing on power line to up. found open fusible resistor ontransformer board.
SONY ITK500
No radio or speakerphone audio No audio from speaker.
SONY PSLX3
Turntable plays 33 ok, not 45 - arm drops at 12" location Would play 33 records, but when switch to 45, arm still wouldland on 12 33 not on 7 45.
SONY TAF444ES
When volume turned up past 16, distorted sound occurs Distorted volume only when attenuator is turned past 16.
SONY STRGX7ESII
Unit is dead Blown fuses f-801, f-802 also shorted d-803 power supply diodecaused by th-801 being pinched by power transformer metal housing. seemsthat from factory this part was accidentally pinched underneath the trans-former which caused it to over dissipate and
SONY STRAV1020
Left channel distorted at higher volume Left channel distorted only at higher volume. found thatrt-701 bias control had no response on bias adjustment at all. checkingfound that r-713 10Ω resistor was open.