Dicas Reparação

Modelo - Chassis

Pesquisa: Enviar Dica Resolvida
Resultados 81469
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LOOSE LEAD ON C101 Frequent slowing down of motor. Found one lead of C101loose.
DEFECTIVE DETECTION LEVER Scraping noise. Cause: detection lever had been jammed underprotrusion on bottom of cam gear in shipping and was permanently warped.This was touching the top of the magnet ass'y on the motor shaft.
DEFECTIVE IC101 In play mode turntable operates normally, in stop mode (poweron) turntable rotates backwards. In STOP mode, IC102-2 output goesnegative 2.1V and inverting input remains slightly positive (Pin 6). Theoutput of LOGIC Pin 6 of IC101 remains at +1 volt. G
DEFECTIVE Q203 Automatic function engages when power is turned on or off, andspeed varies. This only occurs when unit is cold.
REPLACEMENT MOTOR WILL NOT MOUNT During troubleshooting, we found that replacement motor(A-460-801-9A) would not mount properly. Dimensions of motor shaft andspindle were different.
OPEN CAP C205 After several minutes of operation platter slows down and getsprogressively slower.
SPACERS TO REMOVE Platter scrapes on side opposite tonearm.
LEAKY Q3 Turntable speed is too fast.
REPLACING STYLUS The stylus of the moving coil cartridge for the PS-20F isreplaceable. The part number is ND206.
WIRES BREAK The distributor (Norcal) has reported to me several brokenwires on these units. The wires break at the plug end.
SPRING OUT OF LOCATION Switch SW3 did not move to OFF position when stop buttonengaged. Problem was spring (3-561-626-00) was off at stud end, not slideend.
SHORT ON MIC. No sound.
SOLDER CONNECTION Sound would come on loud then become low and distorted.
DEFECTIVE IC AND R602 No light in display tube. Low B+ to IC.
BRIDGE SOLDER CONNECTIONS ON PCB Clock running 10 seconds fast per minute.

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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