Dicas Reparação




Modelo - Chassis


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Resultados 73605
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SonyTCFX1010ERROR IN MANUAL The system control schematic on page 49 shows the +5 volt lineand the -11.7 volt line connected together at the positive side of C773.The fly speck where the lines cross should not be there. -HQ COMMENTS: When we need a S/B on this model for something e
SonyTCFX500RGEAR WEARS Unit makes grinding noise when reversing. Intermittently willjam at same time noise is heard. Gear is made of soft plastic. Inreverse mode torque is too great and teeth pre-destroyed.
SonyTCFX44BURR ON CAM No fast forward.
SonyTCFX33ERROR IN MANUAL Several mistakes were found in the TC-FX33 preliminary S/Mduring trouble-shooting use. I did not have time to check all connectionsand components but have listed the mistakes I did find obvious.
SonyTCFX33DEFECTIVE C580 The AMS solenoid would not consistently engage which resultedin the transport not locking into the play mode. We found the solenoidpre driver not turning on hard enough. C580 had appreciably decreased invalue which did not allow the base of C580 (sol.
SonyTCFX30DEFECTIVE REEL MOTOR Motor noise was audible through the right channel. This wascaused by excessive sparking of one of the brushes in the reel motor.
SonyTCFX4DEFECTIVE RELAY One channel intermittently records and the sound duringplayback is muddy.
SonyTCFX4DEFECTIVE RV104 The right meter on this unit stays on with all led'silluminated. We found RV104 (meter adjust pot) open.
SonyTAF70DEFECTIVE INPUT JACK This unit had an intermittent hum on the phono input. Wefound the input jack to be defective.
SonySTRVX22DEFECTIVE IC301 This unit was locked on aux. We found Pin 26 of IC301 have asteady 5.4V.
SonySTRVX6DEFECTIVE IC401 This unit had no display or tuning action on AM/FM.
SonySTRVX6DEAD Dead unit. Output transistors were shorted causing pulsepower supply to fail - replaced known defective components restoredoperation but bias current, after adjustment would start to increasecausing outputs to run hot. Removed power before damage resul
SonySTRVX6OVERHEATING REGULATOR The +15V regulator overheated to the point where it burntthe board badly. After replacing the board and modifying according tothe service bulletin we still had a very hot regulator. How can we coolit down?
SonySTRVX5MALFUNCTIONING MUTE CIRCUIT Upon turning power off, a slight popping sound through bothspeakers will be heard. By grounding inputs of main amp the popping iseliminated. An imbalance in the decaying time of the positive andnegative supply voltages can be seen on the scope. This r
SonySTRV25AGED RESISTORS The customer has owned this unit for 16 months and has hadit serviced by an independent servicer 4 times. She said it would playfor a while and then one or both channels would go out and it would stopworking. The relay would kick out.






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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