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Sony Repair Tips




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Search: sony
Results: 20077
Make Model Symptom Problem Solution By
SONY STRD511
Left channel out, protection on, ic301 defective Unit is going into protection when power on, if notprotection, left channel cuts off sound output transistor is ok. i foundi301 defective. prologic doesn't work.
SONY STRD511
Unit has no display - transformer t901, open Unit has 5v standby, relay kicked on and allowed 12v thrut901, but nothing on display. t901 open at primary coil.
SONY STRD390
Unit dead/no power - relay drive transistor defective Q960 on main board defective. no display, no relay kick on.unit dead, no power.
SONY STRD1090
Intermittent muting - resoldered class a board Intermittent muting (-20db).
SONY STRD1090
Surround board change The surround board has been changed. in supplement - 2it gives us the circuitry change of the surround board but no part number.if you order part a4347-979-a it comes with ic 417. not like the changein supplement - 2. i need the part number for the
SONY STRD1011
No remote volume operation - ic231 installed backward Ic231 driver put in backward by factory.
SONY STRD1011
Mute button doesn't work - replaced defective q255 Front speaker output is very low, muting button lights up butdoesn't work. i found q255 on a class board defective.
SONY STRAV920
No audio - re-connected volume/balance board No audio out, found that the volume board was not fully plugged in to volume balance board.
SONY STRAV910
Dead - replaced power transformer No standby found primary open on transformer.
SONY STRAV720
No function on video/no video output - replaced q252/ic251 No picture out/no video output. this is occuring on both video1 and video 2. i found q252 shorted, r255 opened and ic251 was defective.
SONY STRAV270
Unit has no power, no display - r703 opened Unit has no display, r703, 39Ω resistor, overdissipated. itbecame 19kΩ.
SONY STJX431
No fm tuning - resoldered tuner to board The unit would not tune in fm radio stations. it only hadstatic. i opened up unit and pulled out the pc board and found the tunermounted at about 35/40 degree angle and not flush with the board. thepins on the tuner had solder over the sides but the p
SONY SDP777ES
Unit is dead - replaced c572 Unit is dead no reset signal from ic557, replacing ic noeffect.
SONY HSTD105
Spot from overdissipation noticeable on mcb Motor is possibly causing damage to the mcb. consumption ofthis part is increasing gradually. it seems that the most cost effectiveway to solve this problem may be to install a smaller wattage resistorr-538? please evaluate. note: missing parts on th
SONY HCDH61M
Unit powers up but no functions - ic581 defective Unit would power up but had no mechanical motion in tape orcd. ( no door opening)
SONY HCDH50U
Intermittent drawer will not open - cleaned fop in switch Intermittently in shuffle, unit would stop playing and discand drawers would not respond to open command or load discs. displays nodisc and drawers would not open.
SONY HCDH1200
Cd and tape section dead - replaced r905 (opened) The display and other functions seemed ok, but the tape and cdsections had no mechanical movement, and no other functions.
SONY HCDC50U
No power - resoldered t901 Unit is dead.
SONY HCDC50U
Sled motor continues to run, cn101 open - repl cn101 The cd made a clicking noise and the sled motor continued torun the pick up to its home position. no cd function. the limit switch wasok.
SONY HCD541
Unit would not power up - resoldered cn701 on main board Only 1 or 2 lights on front panel would light @ power on.visual inspection of main board showed broken solder joints on almost allpins of cn701.