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Resultados 81736

MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyXM3520
PROTECTOR LIGHT COMES ON IMMEDIATELY UPON POWER-ON Unit will come on but will go to protect mode right after turnon.
SonyKPR53EX20
THE WORD VIDEO IS DISPLAYED WHEN NO VIDEO IS INPUTED, NORMAL SSC field technician reports two incidents of the following:In video one mode with no signal input the ON screen display remains ON(with jitter of course) but will go off as soon as a signal is applied. Acustomer complaint is involved. What answer do we
SonyKV27XBR10
RASTER BLANKED, REPLACED Q-716, AND R-744 ("C" BOARD) No RGB outputs. Confirmed picture was muted. CheckedV-blanking pulse from IC-301 traced to Q-716 on C board. Also noticedR-744 was blown.
SonyKV27XBR50
PICTURE IS SMEARED WITH INTERMITTENT LOSS OF COLOR, IC-1303 The picture appeared to be smeared with intermittent loss ofcolor. The same sections of the picture looked negative. Reportedlycaused by lightning damage. The waveform at IC-1302/pin 28 on the Bboard looked good but had distorted Y signal at pin 26.
SonyKV27HSR10
HORIZONTAL OUTPUT TRANSISTOR SHORTS OUT, REPLACE C-522 Q-503 (horizontal output transistor) shorts out after beingreplaced (instantly). Disconnecting Q-503 collector restores 137V line.With the transistor in circuit the line goes to 0VDC.
SonyKV27XBR55
NO COLOR/CANNOT ADJUST COLOR No color and cannot adjust color. Using remote to adjustcolor would shut unit off.
SonySLV686HF
NO SOUND AND UNSTABLE PICTURE FROM RF OUT WHEN COLD Unstable audio on RF out until unit warms up. Line out signalis ok.
SonyWM7
CONSTANT AUTO REVERSE Unit only works with headphones. If customer hooks up unit toamplified speakers, home stereo, or 2 piece wireless headphones, the unitwill constantly auto reverse. Customer no longer has original remotecontrolled headphones and they are no longer avail
SonyCCDV101
ADJUSTMENT SCREW ON DRUM BASE ASSEMBLY
SonyCCDF401
UNIT WILL NOT COME ON Unit would not power on. Checked IN/OUT data on the VK-14board and found distorted data. Traced problem to shorted zener diodeD-517, (K-in 2 output). Checked another board and found no zener diodeson the data lines. It seems Japan eliminated the diod
SonyEVS550
ADJUSTMENT PROCEDURE NOT CORRECT: SB CSV-2 188R1 Per servicer, the adjustment procedures of the EV-S550 is notcorrect (see 9-4-2) switching position adjustment CM-13 board and mech-anical adjustment 8-1-2 adjustment preparation. Unable to translate.
SonyCFS903
THRUST RETAINER DOES NOT CONTAIN NYLON BUTTON RETAINER FPR M1569 states that this unit does not contain thrustretainers for the flywheels. Jeff Choate from San Francisco indicatedthat he has a unit that has a worn nylon button on ref. 118 (page 15 ofS/M) which retains flywheel ref. 131. When ordered from K
SonyCDPS107
UNIT SKIPS WITH NEW MD ASSY, DEFECTIVE NEW STOCK Units needed MD assembly (skips).
SonySTRAV270X
NO STATION PRESET MEMORY After programming stations into preset memory, memory is lostwhen unit is turned off (but still plugged in). IC-301/pin 26 loses the5V when set is switched off.
SonyTAAV601
LEFT/RIGHT OUTPUT DIFFERENCE IN SURROUND MODES Customer and servicer are questioning normal operation of thisunit. When equal levels are set with surround modes off, then whensurround modes are switched on, left channel has slight gain increasewhile right channel has slight gain decrease. -HQ COMME



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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