Dicas Reparação




Modelo - Chassis


Pesquisa: Enviar Dica Resolvida
Resultados 73930
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MarcaModeloCh:SintomaCausaSoluçãoPor:
SonyHMK119WARPED TURNTABLE Record rubs on frame causing drag.
SonyCFS67OPEN R308, MOTOR AND FUNCTION SWITCH No power in any function. Resistor 308 is open, switchfunction is shorted in tape mode and tape motor is at first shorted andthen open. -HQ COMMENTS: Charging current for C305 (1000uF) through the R308 burnsthe R308. We should replace it with other va
SonyTR3230DEFECTIVE Q1 No sound output. No sound with tracer at volume control.Voltages of emitter to base of Q1 were improper.
SonyTPSL2TYPICAL WOW AND FLUTTER ON THIS MODEL Excess speed variations when the unit was used for jogging.Units measured about 0.3% to 0.4% wow anf flutter while at rest, and wouldvary between 0.5% and 0.8% while jogging around the test equipment.
SonyTCK65DEFECTIVE MOTOR Customer complained that intermittently, unit would lock up,no functions would work. Found that intermittently, capstan motor wouldnot start up when power was applied to the unit.
SonyTCD5MDEFECTIVE Q-901 Fast forward and rewind are stopped after running a fewseconds.
SonySRF80WLEADS OF C606 NEEDED INSULATION Intermittent speaker popping on left channel. Problem wouldnot arise when using headphones but only when radio installed in poweredspeaker unit.
SonyPSX40SHORTED MOTOR Very low drive torque, Q103 and Q104 low outputs. No signalat emitter of Q103 and Q104 - measure emitter of Q103 and Q104 to groundreading should be 38 ohms. L3 and L4 of motor measure short.
SonyPST22MOTOR HUM AT START-UP At start up of motor for about 1/2 revolution of platter thereis a hum, then a pause, as soon as the motor is up to speed hum stops.
SonyICFC310WMODIFICATION TO INCREASE BUZZER OUTPUT Customer is complaining the buzzer is not loud enough.Buzzer becomes loud enough when the sleep switch is on. At that timeQ6 collector receives 12V for a louder amplification than the 6 volts itsees when the buzzer is on by itself. What can be done to
SonyICFC15WDISCONNECTED Q9 Distorted sound in audio section. Used signal tracer to findbreak in landing at the collector of Q9.
SonyICF7600LOOSE CAPACITOR Capacitor had pulled away on the tone control board.
SonyHMK414EJECT BUTTON OUT OF PROPER LOCATION When unboxed, eject button pushed inside of unit. No damageto box.
SonyHMK414MOTOR FELL OUT OF PROPER LOCATION Cassette motor fell out of tape transport during shipment.
SonyCFS55STOP LEVER NOT PROPERLY POSITIONED No audio when placed in play, but tape is erase, recordnormal.






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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