Dicas Reparação SONY




Modelo - Chassis


Pesquisa: SONY Enviar Dica Resolvida
Resultados 18945
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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyTAAX285
UNIT IN PROTECTION Unit is in protection. Emitters of output transistors are 0volts. Q-700 is turned on hard causing 9 volts on collector going toprotection IC-700.
SonyKV32HSR10
ERROR IN SCHEMATIC DRAWING, AROUND R-332, D-301, R-367 Schematic drawing error in the area designated at junctionM-19. Parts involved are R-332, D-301 and R-367.
SonyKV27TX20
P/N FOR "A" BOARD SUPPORT BRACKET, 4-388-969-01 There is no part number for the A board support bracketshown in the service manual (pg 49). -HQ COMMENTS: We have faxed tokyo and they have informed us that thepart number for this item is 4-388-969-01.
SonySPP80
MOTORBOATING NOISE IN HANDSET Motorboating noise in handset speaker.
SonySPP320
NO CHANNEL LOCK No channel lock (or sometimes only channels 8, 9 and 10).Also applies to serial numbers 12072, 12103 and 12826.
SonySPP320
POOR AUDIO CONNECTION ON TELEPHONE LINE Poor connection with outside line. Audio and dial tone barelyaudible or nonexistant both in and out.
SonyD77
NO AUDIO No audio due to loss of -4.7vdc at Q-405 collector.
SonyCDP590
HIGH FAILURE RATE OF IC-102 Have seen many of these ICs fail in various models. They getvery hot and removal is difficult.
SonyCDP190
HIGH FAILURE RATE OF IC-102 Have seen many of these ICs fail in various models. They getvery hot and removal is difficult. Sometimes the PCB traces are damagedby the heat which means the PCB must be replaced.
SonyCCDTR5
NO COLOR RECORD Camera had no recorded chroma - all other modes had color.Found L-502 in the chroma convert circuit - circuit on the VC-60 boardopen (little tiny part). No part in Kansas City Parts - pulled fromscrap. -HQ COMMENTS: With L-502 open, the 743kHz chroma c
SonyCDXR77
DISPLAY PCB DISLODGED Display PCB becomes unseated from plastic clips that holdlower edge causing no operation of several buttons on front panel.
SonyEVC8U
SNOWY PICTURE EVERY TWO OR THREE SECONDS Every 2 or 3 seconds the picture would become snowy. Soundremained OK.
SonyKV27TX20
DISTORTED PICTUREM, RESOLDER IF BLOCK IF-201 Both normal and PIP had what looked like AGC overload perservicer. Output from video input was good. Bypassing antenna switch didnot correct the problem. Prior to subbing tuner, unit began to operatenormal. Tapping on IF block indicates loose connect
SonyKV20EXR10
RED RETRACE LINES APPEAR ON THE SCREEN, REPLACED IC-701 On TV mode and Video mode, red retrace lines appear on thescreen. The lines more visible on video mode and no signal connectedcondition.
SonySPP120
HANDSET CHANGES CHANNELS ON ITS OWN After hand unit and base establish contact, the hand unitcycles to the next higher channel about every 12 seconds (just as itwould if the channel button were pushed). Also applies to S/N 12352.


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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