Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
---|---|---|---|---|---|
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 | STRD990 | 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. | ||
Sony | STRD990 | 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 | ||
Sony | CPD9000 | RECOMMENDED SCREEN CLEANER | |||
Sony | CFD970 | 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. | ||
Sony | STRD990 | 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. | ||
Sony | STRD911 | UNIT SHUTS DOWN AFTER 5 MIN. - IMPROVE GROUND CONNECTIONS | Unit shuts down after 5 minutes of use - Brand new out of thebox. | ||
Sony | STRD990 | UNIT SHUTS DOWN - Q658 (8-729-321-21) & Q660 FAULTY | Unit shuts down. Locate and replace shortedQ654/Q655/Q658/659/660. | ||
Sony | STRD990 | 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. | ||
Sony | CFSD960 | REPLACEMENT HEAD HAS EXTRA WIRE - JUMPER YELLOW AND BROWN | Original head had six wires. | ||
Sony | STRD990 | 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 | ||
Sony | STRD990 | 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). | ||
Sony | STRD990 | 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. | ||
Sony | STRD990 | UNIT CYCLES OFF IMMEDIATELY WHEN POWERED UP | Unit immediateley shuts off when powered up. Fuses were allfine. |