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Sony Repair Tips




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Search: sony
Results: 20100
Make Model Symptom Problem Solution By
SONY SPP70
Handset microphone low/low audio line Unit's handset transmitted low audio to base. foundic-501/pin 30 to be 4 v, which did not allow the incoming signal to beamplified.
SONY SPP190
Part number correction: ic612 Ic612 replacement part is wrong size or package. the originalone is surface mount device but the replacement is to-2 package.
SONY MDP600
Noisy left channel Noisy left channel.
SONY MDP333
No spindle rotation The unit would focus, but would not rotate spindle. inoticed a dc level change at pin 6 of ic202 and none at pin 7.
SONY TCWR690
No functions, pause indicators flash - c708 cold soldered Unit powers on. press any function button, capstan motorturns, reel motor doesn't turn, no function. both pause indicatorsflash on/off.
SONY TCWR590
B deck inoperative - replaced s81 B deck acted as if out of sync, would stop at the wrongplaces on the gears.
SONY TCK611S
Two seconds into play unit shuts down - ic1002 defective Unit shuts down a few seconds into the play mode. all otherfunctions work ok. confirmed clean switching pulse on p4 of ic701 fromic1002. confirmed that s1001(rotary encorder) switch was ok. replacedic701. unit still shut down. could manually rotate t
SONY TAAX520
Volume goes to one level, ic202 faulty - replace ic202 Unit turns on but volume is out of control. level indicatorgoes from bottom and up to the top. volume level cannot be adjusted bymanual or remote. unit has defective ic202.
SONY TAAV421
Dead - q951 shorted Inoperative unit caused by failure of -17vdc regulator:q951 8-729-141-83 (shorted), c964 1-124-907-11 and r955 1-215-890-11(open).
SONY STRGX47ES
Dead/no power - replaced open q802 Unit dead, no power supply voltages present. 5v standby voltage is ok. -found: ry901 was not activated, and q802 was open.
SONY STRG1ES
Unit dead - replaced open transformer The unit was dead, found primary side of t901 open.
SONY STRD911
Weak and crackling rear surround - ic414 defective Very weak and distorted rear surround, center was fine.
SONY STRD911
Lost fm reception, cuts out with volume turn up - ic973 def. +5v reg, ic973 defective. lost fm reception, no tuner.lost +5 line regulator. unit cuts out after volume turned up to 4 or 5.
SONY STRD911
Protection mode/output shorted - replaced outputs Output transistors shorted, q755, q756, q751 overdissipated. r759, r760 open. unit had no bias control.
SONY STRD911
Missing part number, output transistors - listed under misc. Service manual is missing part # for output transistors. for instance q755, q756. -hq comments: the part numbers for the output transistors are listed onpage 60 of the service manual under the heading miscellaneous.
SONY STRD790
Display won't light up - replaced r975 and ic202 R975 overdissipated, minor damage to board/replacedr975, display shows bad segment, and everything lights up at once.
SONY STRD611
Distorted audio - ic301 distorting signal, replaced Distorted output all modes, fm, cd, tape, etc.
SONY STRD511
Intermittent surround volume - ic306 defective When surround rear volume was adjusted +5 up to +8, volume torear would cut out below +5 or above +8. unit would resume normalopeations.
SONY STRD3070X
No audio, display ok, but no graphic display - repl x302 Unit has display, but no audio, no graphic display. i foundon the digital 1 board, crystal x302 defective.
SONY STRD159
Unit had erratic funcitons - resoldered xformer connections Unit had erratic functions. faulty ground pin 14 causederratic low +dc values and equally higher negative voltages.