Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por:![]() |
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Sony | SLVR5UC | BLACK HORIZONTAL LINES (LIKE DROPOUTS) IN E-E: IC701 LR10 BD | In E to E mode, black horizontal streaks - similar todropouts. | ||
Sony | XR5507 | NO AUDIO | Unit powers on. Tape and radio are okay, but no there was noaudio. Found C313 shorted. | ||
Sony | CDPC235 | U/D GEAR/BU HOLDER DISPLACED, PLASTIC PIN FOR REF.111 BROKEN | Unit was shipped into Sales office for show and found to beinoperative out of box. Initially, we found tray would not open and unithad constant clicking sound. Opened bottom and found BU holder pinion hadbeen displaced out of groove in gear ref #119. Fur | ||
Sony | CDP397 | NO AUDIO, NO -5V (REPLACE OPEN L291/L292, P/N 1-410-658-31) | Unit plays disc, but has no audio. The low-pass filters andbuffers have no -5 volts. This voltage is produced from coils L291, L292and the +5 volt regulator IC291. If either coil is open the -5 voltswill be missing. | ||
Sony | SPPS10 | NO AUDIO TRANSMITTED FROM BASE - RESOLDER C79. | No audio transmitted from base. After confirming the handsetwas good through the analyzer, I checked the base to see if audio wasbeing transmitted. Working my way from Pin 3 of connector (main PCB tobase power PCB), up to Q11 emitter, I noticed that ther | ||
Sony | SPP320 | NO CODE TRANSMITTED FROM BASE | Unit did not lock up. Trying out handset and base in testmode, unit worked fine. I tried new ID ROMs, the unit still did not lockup. Going to the base, pushing intercom it should output code (which canbe heard through receive section of the analyzer), b | ||
Sony | CCDV101 | NOT RECORDING RF FOR HEAD 2/REPLACE Q202, VS99 BOARD | Unit will not record RF for channel 2 head. Replaced HR10board. Problem still persists. Traced the signal on HR10 board - Foundno output at Pin 37/IC101 - DC voltage 0.06V higher then pin 24/IC101 -Found Q202 (SS99 board) leaky base collector. | ||
Sony | FD285 | POOR PICTURE, REMOVED GLUE AROUND RV801 | Blury picture, has sound. | ||
Sony | KV32TS36 | DEAD UNIT, REPLACED Q601, Q602, Q591, AND D603 | No picture or sound. Set is dead. Found Q591 (horizontalout) shorted. Also, Q601, Q602, and D603 shorted. R607 was open. | ||
Sony | FDC290 | CAN NOT SET CLOCK, RESOLDERED CN703 ON THE "B" BOARD | The TV works, but the clock can not be set. | ||
Sony | KV10FMR20 | NO PICTURE - HAS SOUND, REPLACED R835 | No TV channels - video inputs work fine, but verticaldeflection was shortened at top and bottom. | ||
Sony | D34 | DEAD UNIT - JUMPER Q451 AND Q453 EMITTERS. | The unit will not function and will not run a test. Checkedpower supply and found proper voltage on emitter of Q451. There was novoltage on emitter of Q453. | ||
Sony | D33 | UNIT IS DEAD - REPLACE TOP COVER | Checked all power supplies, but the unit would not function.Found the door close switch was staying open when the door was closed.The upper assembly panel (top cover) has an arm which closes the switch.The arm was broken. | ||
Sony | CDP297 | NO AUDIO, NO -5V (REPLACE OPEN L291/L292, P/N 1-410-658-31) | Unit plays disc, but has no audio. The low-pass filters andbuffers have no -5 volts. This voltage is produced from coils L291, L292and the +5 volt regulator IC291. If either coil is open the -5 voltswill be missing. | ||
Sony | CDPC725 | NO AUDIO, REPLACE DEFECTIVE IC203 OR IC204(+/-12V REGULATOR) | I have seen this problem several times (no audio or distoredaudio). There are two regulator IC's used to power the audio amp circuitafter the D-A converter: +/- 12 volt supplies from IC203 and IC204.Checked voltages and found one missing. |