Dicas Reparação




Modelo - Chassis


Pesquisa: Enviar Dica Resolvida
Resultados 81407
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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyFD525
STATION DOES NOT LOCK, REPLACED IC101 Can't sync video on all the channels.
SonySPPS20
DEAD AC ADAPTER Charge board is broken (4 pcs). The part # is recognized butthere is no stock. Furthermore, there is no part # for complete charger. -HQ COMMENTS: You can go ahead and order the charge board. KCP has 2 onback order from WRPC.
SonySPPER1
WILL NOT TAKE CHARGE Intermittently will not take charge.
SonySPPA450
UNIT FAILS TX FREQ OFFSET IN BASE - REPLACE C113 AND C114. Unit fails TX freq offset in base.
SonySPPA250
ICM CUTS OFF AFTER 7 SECONDS - RESOLDER R101 Unit cuts off ICM after 7 seconds, whether or not person wastalking. Vox circuit not working properly. Found excessive glueprevented proper solder flow on one end of R101.
SonySPP2010
NO AUDIO HEARD ON EARPIECE WHEN YOU SPEAK Complaint was: Cannot hear caller. No feedback audio heardon earpiece. B & K did not register modulation, but Schlumberger showedno problem with handset. Base failed audio test. There was audio at pin3 of expander but very low at pin 2.
SonySPP2000
NO DESIGNATION OF ID ROM ICS Unit would not grab line.
SonyITID500
NO DISPLAY NO FUNCTION - REPLACE IC501 Unit had no display no dial tone, no ring and no keyfunctions however, line light would come on when off hook.
SonyITA555
DISTORTED AUDIO DIGITAL - REPLACE IC608 AND IC609 Playback audio pulsates on and off rapidly.
SonyGVS50
UNDOCUMENTED DIODE ON AU-136 BD / P/N 871911827 There is a diode across the video connector on the AU-136board that looks like it was a modification to the original board. Thereis no part number. -HQ COMMENTS: The part number is 8-719-118-27. It is there to protectagainst static electricity.
SonyGV300
NO COLOR OR PLAYBACK OF TAPES - REPLACED IC701 No color on playback of tape
SonyTCWR901ES
SLOW IN ONE DIR, OR WON'T PLAY DECK A/B - CLEAN & RE-LUBED The tapes play slow in one direction only or will not playat all. The problem is caused by the grease used on the flywheelassembly. It gets hard and impedes free movement.
SonyTCWR545
BOTH WELLS TAPE JAM - REPL PINCH ROLLER AND CAPSTAN BELT 1 . both tape decks eat tape. 2. deck A auto reverse n/g andrigh ch n/g. 3. both cassette doors stuck
SonyTCRX311
INTER FUNC, SPEED VARIES, MAY EAT TAPES - REPL FLYWHL GEAR The unit had intermittent mechanical functions, intermittentspeed variations and occasionally damaged the tape. The problem wascaused by a small crack on the flywheel gear.
SonyTCR302
RECORD BIAS ON ALL THE TIME - Q308 DEFECTIVE the bias oscilliator was on continuously thus erasing thetape during playback. The problem was caused by a leaky Q308 bias switchwhich was maintaining the bias oscillator in an ON state.


Assistência TécnicaAs dicas apresentadas destinam-se a técnicos de eletrónica, a tentativa de reparação ou assistência sem ter conhecimentos de eletricidade e eletrónica, podem provocar danos mais graves aos equipamentos e, devido a tensões muito elevadas em alguns circuitos, graves danos fisicos que podem constituir um risco em determinadas reparações.

Não arrisque reparar equipamentos com tensões elevadas se não tiver conhecimentos técnicos para o fazer em segurança.

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