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Sony Repair Tips




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Search: sony
Results: 20092
Make Model Symptom Problem Solution By
SONY STRGX900ES
In surround mode front channel drops vol and sound muffled When unit is put into surround mode, front channel audioreduces in volume and sounds muffled. this symptom has been reproduced onall of these models that this dealer has in stock. this is not one of themodels that the strgx900es has replaced. all his
SONY STRGX800ES
No display - resoldered ic202 No display r975 open, replaced r975 display then lit uptotally, r975 opened again.
SONY STRGX69ES
No am reception - repl ic21 Fm is ok but am is not locking in. found ic21 defective.
SONY STRD990
Distorted right & center channels - replaced ic311 Distorted right & center channels.replaced q654 per fpr n2180,however this was not cause of this problem. found right channel distortedat input jacks and worse as signal went through the amp. using scope probeas antenna found noise radiating from ic311,
SONY STRD715
Popping in main speakers at turnoff - resoldered rca jacks Found rca jacks had ring cracks, also in protect found outputsshorted.
SONY STRD715
No tuning other inputs ok Cns251 connector to tuner pcb was unplugged.
SONY STRD611
Static noise in tuner other mode, - ic301 defective Ic301 defective r805 burned, ic801 defective. i replacedr805 and ic801 unit still has noise in audio.
SONY STRAV780
Display dark - resoldered loose pin Display comes on intermittently.
SONY SDP777ES
High freq. whine in line out rear - repl ic453 Approximately 400 hz low level buzz. could only troubleshoot to determine it was being produced in digital circuits.
SONY SAVA3
No sound rear channels - replaced f908 No sound from rear channels no dc to amp chip.
SONY HST221
Unit has no audio - ic302 is missing from control bd Unit came in for no audio. noticed that ic302 was missingfrom control board. the layout of the main board in the unit is differentfrom that in the s/m as well. has there been a production change on thisunit? -hq comments: we are not aware of any chan
SONY HST201
No am/fm - resoldered x600 No am/fm. other functions ok.
SONY HCDH1200
No functions cd tape, radio or output - r905 opened No tape movement, no cd functions, no radion tune, and noouput. display is ok.
SONY HCDG2000
Display mode will not display tape or video Display would display cd when either video or tape buttonspushed.
SONY HCDD550
Pin layout of ic 1201 In the service manual ic1201 is written as an 18 pin ic. infact, it is a 22 pin ic. i assume that pin 3 of the 22 pin ic is pin 1 ofthe schematic. -hq comments: this ic, stk4231mkii, is used in several diffrent modelssuch as saw541/441, hst221, 211, 201
SONY HCDC50U
Cd will make scraping noise Other fpr's recommend installing a bumper or mod with ascrew. that's only a shortcut to the real problem. the parts that causethe problem are the top and bottom chassis parts and side supports markednot supplied on page 100 of s/m. when assembling or
SONY HCDC50U
Distortion in high speed dub - redressed components Using high speed dub, distortion in playback signal of deck bsounded like oscillation. problem was caused by c213 being bent overr212. these components are in feedback circuit of ic302 which is pbamplifier for deck b. this did not effect a normal rec
SONY HCD541
No audio in normal dub, hi speed dub can hear cheeping In normal dub you cannot hear any audio, but in high speeddub, you can hear a cheeping sound. this sounds like it is reverse ofwhat it should be. is this normal for this model? the servicer has 3units and they all do the same thing. if you play back
SONY DTC700
Intermittent noise - added heavy grnd wire Reference to fpr's # n2566 & n1993. after replacing ic932 thetoshiba regulator still had only 4.7vdc output pin 3. found ground pin 2to be at -0.2vdc.this was caused by resistance in yellow wire from cn931to cn391 and plug/iacks.
SONY CDPC615
No display, all other functions normal - repl ic201 Unit had no display. but functioned normally otherwise.followed -32v line from ic401, it was missing (no -32v) supply voltage wasnormal at ic201 /pin 1 but no -32v at pin 3, pin 4 was noraml -5v.