Dicas Reparação




Modelo - Chassis


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MarcaModeloCh:SintomaCausaSoluçãoPor:
SonyTCFX30AGED RESISTOR Unit would slow down in rewind and fast forward modes whenDolby C was turned on.
SonyTCFX22IDLER WHEEL BINDING Playback was very slow.
SonyTCFX22BEND IN SLIDER NEEDED Transport fails to have take-up in playback or record mode.Transport is excessively noisy and will not engage into FF smoothly.All of this can be caused by slider (355) being bent causing FF lever(305) to have incorrect timing in conjunction with take-up
SonyTCFX5DEFECTIVE REGULATOR Q602 This unit had intermittent bias osc. operation caused by theline mute (Pin 21 IC501) being intermittently activated. We found thiserratic operation of the UPC to be caused by a noisy voltage regulator- Q602. A quick check of the B+ line revealed the pr
SonySTR55DEFECTIVE IC101 Tuner section drifts off station intermittently.
SonySPP11HOPEN Q4 Noise from hand unit in TALK mode even with base-unit powered.
SonySPP11DEFECTIVE IC2 NE567 Base unit would not respond to any function from hand unit.In use light did not light, would not dial out. Found IC2 Pin 8 wouldnot go low.
SonyRT66DEFECTIVE REEL MOTOR This unit had poor FF/REW torque and would stall when using90 min tapes.
SonyRS30NO SHUT OFF AFTER THE CALLER HUNG UP This unit would take one minute and sometimes more to shut offafter the caller hung up. There would be just a dial tone recorded on thetape. About every 15 seconds the unit would try to hang up. There wouldbe a click recorded on the tape but then the
SonyPSX55BROKEN CONTACT ON SWITCH CAM The tonearm on this unit would not move in to the edge of therecord all the way or set down. We noticed a slight amount of friction inthe tonearm travel. Disassembly revealed a broken contact on the switchcam (the electrical feeler that contacts the ca
SonyPS333DEFECTIVE PITCH CONTROL Neither 33 or 45 rpm would lock in. Speed was excessive.Voltage were correct.
SonyPCMF1DEFECTIVE D102 Left channel was noisy - REC level control had minimal effecton noise - input signal was weak and distorted - line amp had some DCoffset at input to LPF - found constant current diode D102 breaking down.When testing this diode on a curve tracer using a 1
SonyICF9540WDEFECTIVE Q1 This unit had poor sensitivity and distorted output in theFM mode. We found the RF amp to be defective.
SonyCFM200MISSING PART NUMBER The P/N for the mechanism chassis is missing from the servicemanual. However, the chassis from the CFS-400 appears to be very similar,this chassis is P/N A-3102-043-A. Are these two chassis the same?The part for the CFM-200 was researched by KC with ne
SonyCDP101UNIT OUT OF ADJUSTMENT Unit would skip on 2nd track and 5th track.






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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