Dicas Reparação




Modelo - Chassis D9


Pesquisa: D9 Enviar Dica Resolvida
Resultados 103
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(Chassis)
SintomaCausaSoluçãoPor:
SonySTRD911
PROTECTION MODE/OUTPUT SHORTED - REPLACED OUTPUTS Output transistors shorted, Q755, Q756, Q751 overdissipated. R759, R760 open. Unit had no bias control.
SonySTRD911
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.
SonySTRD990
UNIT WILL NOT TURN OFF - RESOLDERED JUMPER WIRE The unit would turn on when power was applied. The mute lightwas always on. All front panel controls work, but there is no audio andunit will not turn off.
SonySTRD990
TUNER BLEED WHEN USING OTHER INPUTS - USE S/B 225R1 Also s/n 8863992. Units have tuner noise when listening toother inputs at volume level 2 and up. Noise increases as volume isturned up. Please provide remedy. -HQ COMMENTS: Please try the STRAV920/1020 modification (S/B 225R1).It transfers to the STRD9
SonyCPD9000
RECOMMENDED SCREEN CLEANER
SonyCFD970
BROKEN LID ASSY, CD Broken CD lid assy, on hinge portion. No apparent physicaldamage. Second unit with same problem. Lid broke on one corner. Maybethere is a problem with the design.
SonySTRD990
UNIT GOES INTO PROTECT - IC202 FAULTY 8-759-071-90 Unit would go into protect. Upon diagnosis found all poweramps and IC's to be functioning properly. Desoldered the protect input ofIC202 pin#47 and the unit still went into protect.
SonySTRD911
UNIT SHUTS DOWN AFTER 5 MIN. - IMPROVE GROUND CONNECTIONS Unit shuts down after 5 minutes of use - Brand new out of thebox.
SonySTRD990
UNIT SHUTS DOWN - Q658 (8-729-321-21) & Q660 FAULTY Unit shuts down. Locate and replace shortedQ654/Q655/Q658/659/660.
SonySTRD990
UNIT INOPERATIVE - D957 FAULTY 8-719-933-41 Unit is inoperative. Cannot turn on and no relay click, no+5v regulator, Q951 off. I found shorted diode D957.
SonyCFSD960
REPLACEMENT HEAD HAS EXTRA WIRE - JUMPER YELLOW AND BROWN Original head had six wires.
SonySTRD990
MISSING PARTS ON SURROUND TUNER BOARD - IC308, IC309, MORE A number of units have been received which are missing partson the Surround Tuner Board and have jumpers installed in place of theparts. Some units have a different version PC board (Some have1-644-100-11 version board and some have 1-644-100-12 version
SonySTRD990
ORIENTATION ON D301 AND D302 SHOWN INCORRECTLY IN S/M The orientation on D301 and D302 in the schematic diagram(page 24, location P/8) and the PCB layout (page 28, location E/8) isshown incorrectly (both shown reversed).
SonySTRD990
DLRC MAIN ON DISPLAY WHEN UNIT IS OFF - RESET IC202 When unit was on, it would function fine. When turned off,display would read DLRC MAIN.
SonySTRD990
UNIT CYCLES OFF IMMEDIATELY WHEN POWERED UP Unit immediateley shuts off when powered up. Fuses were allfine.


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