I just bought a used Nakamichi RX-505 and it won't eject or auto- reverse. When I press the button, I can hear it engage and the mechanism responds, but no movement.
I' removed the cover and nothing is showing to be wrong. Can anyone help?
Thanks, Terry
If it uses a function motor to raise and lower the mech, I would suspect the motor is faulty (open internal connection to coils). Seen it before, and the fault can be intermittent. Try rotating the motor a bit by hand - it might just take off and run for a while.
As for fixing the motor, that's a tough one but the best "cheat" I've come up with is to disconnect the motor wires, loosen the motor from it's mount, and apply an external DC voltage of perhaps 6 or 7 volts and let it run for at least a couple hours, then reverse polarity and repeat.
The intermittent internal connections result from years of not much usage. Running it continuously seems to fix them - I've not seen any recalls after applying this fix. Of course this does NOT apply to shorted motors quite as well, but I've not seen these types of motors go shorted.
I've also seen this work on MR-1 reel motors for example - and it's SO much easier than taking out the motor, disassembling it and trying to clean the tarnish etc off the commutator and risking physical damage to the brushes etc on reassembly.
Mark Z.
Service the power supply, and check for proper current consumption of the scanning output stages, especially the horizontal output stage.
The clicking you hear is the power start relay cycling, not the degaussing!
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JANA _____
If it uses a function motor to raise and lower the mech, I would suspect the motor is faulty (open internal connection to coils). Seen it before, and the fault can be intermittent. Try rotating the motor a bit by hand - it might just take off and run for a while.
As for fixing the motor, that's a tough one but the best "cheat" I've come up with is to disconnect the motor wires, loosen the motor from it's mount, and apply an external DC voltage of perhaps 6 or 7 volts and let it run for at least a couple hours, then reverse polarity and repeat.
The intermittent internal connections result from years of not much usage. Running it continuously seems to fix them - I've not seen any recalls after applying this fix. Of course this does NOT apply to shorted motors quite as well, but I've not seen these types of motors go shorted.
I've also seen this work on MR-1 reel motors for example - and it's SO much easier than taking out the motor, disassembling it and trying to clean the tarnish etc off the commutator and risking physical damage to the brushes etc on reassembly.
Mark Z.
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