Dicas Reparação




Modelo - Chassis D9


Pesquisa: D9 Enviar Dica Resolvida
Resultados 103
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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonySTRD915
NO FM RECEPTION - REPLACE FRONT END FM station does not come in.
SonySTRD915
DEAD - RESOLDERED RY901 Found one side of coil on the power relay unsoldered.
SonySTRD990
ALL INPUTS BLEED THROUGH TUNER When tuner is selected and there is an input into cd it bleedsthrough tuner. The same happens if you switch input from cd to tape,dat, video. -SOLUTION : Found capacitor that was not on schematic across pins 10and 14 of IC803 electronic volume control,
SonySTRD990
DISTORTED RIGHT & CENTER CHANNELS - REPLACED IC311 Distorted right & center channels.Replaced Q654 per FPR N2180,However this was not cause of this problem. Found right channel distortedat input jacks and worse as signal went through the amp. Using scope probeas antenna found noise radiating from IC311,
SonySTRD990
BUZZ IN REAR AND CENTER CHANNELS Buzz in rear and center channels.
SonySTRD990
SURROUND SOUND DOES NOT WORK - REPL Q641 AND 643 Q641 and Q643 shorted, relay for surround speaker did not kickin.
SonySTRD915
MEMORY PRESET 1, DIRECT, & TAPE BUTTONS WON'T FUNCTION The memory preset, direct, and tape function buttons areinoperable.
SonyCFSD960
NO TAPE FUNCTIONS No tape function, upon opening saw that second lever waspopped out of place, put back in place and adjusted unit.
SonyCFD970
NO POWER WITH 9V ADAPTOR - REPAIR TRACE ON J901 Unit had no power DC. Upon checking DC jack, it was foundthat the middle trace that carries 9v to the other parts of the unit wasbroken at J901.
SonyCFD970
NO POWER AC/BATT - REPLACE PS901, P/N 1-532-686-21 Unit had no power by 9v adaptor and by the batteries. Powercoming into J901 was ok. Checked PS901 which was open. This is a verycommon problem with this model.
SonySTRD990
NO CENTER CHANNEL - IC202 DEFECTIVE Found IC202, pin 27 not going high enough to activate thecenter channel relay.
SonySTRD990
UNIT WORKS, BUT THE DISPLAY WILL NOT LIGHT UP - T902 OPEN Unit works O.K. but no display. Found transformer T902 open,at pin 21 and 23. There was no AC voltage to the display.
SonySTRD911
SHORTED OUTPUTS Found shorted output. Transistor's base lead of outputtransistor overdisipated and had fallen off. Have seen three units likethis.
SonySTRD911
WEAK AND CRACKLING REAR SURROUND - IC414 DEFECTIVE Very weak and distorted rear surround, center was fine.
SonySTRD911
LOST FM RECEPTION, CUTS OUT WITH VOLUME TURN UP - IC973 DEF. +5V reg, IC973 defective. Lost FM reception, no tuner.Lost +5 line regulator. Unit cuts out after volume turned up to 4 or 5.


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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