Question about Yamaha CDC-502 5-Disc CD Changer

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CD tray repeatedly opens and closes

When I turn on the CD player the tray opens. I hit "close" and it closes only to almost immediately open again, even if there's a CD in it. Needless to say, it won't play any CD's.

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Re: CD tray repeatedly opens and closes

Is this a yamaha 5 disc changer, table. not the cartridge type...

Posted on Mar 19, 2008

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Re: CD tray repeatedly opens and closes

If you open the mechanism you will see a motor that gives the force to the rest of the mechanism to open and close the door.The mechanism is been driven by the motor with a "plastic wire" (my bad english...). Replace this on with another one a little bit smaller in size and you will be done. (it is a special one and you can find this only in the electronic parts shops). Have fun (with my bad english???? xexexe!)

Posted on Aug 10, 2007

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(these tell to the control unit the position of the tray - open/closed), so that the control unit can start/stop and reverse the direction of the tray ejector motor.

These contacts are located somewhere underneath the tray (usually near the front unit cover), and since you mentioned that the tray was bumped while it was open, it is possible they were damaged. Also, the behaviour of the tray suggests that the control unit can no longer tell whether the tray is open or closed so it operates the tray motor in a wrong manner, which, again, points to these same contacts as the possible cause.

Repairing the contacts may be a somewhat delicate procedure, first you need to locate them (it may require partial disassemby of the tray mechanism), if they are bent a pair of tweezers might do the job, if there's hard damage, it's probably better to replace them (scrapped CD ROM units or a dead CD unit might be a good source, they just need to be of the same dimensions).

There may also be other causes for this malfunction, i just mentioned the first thing that i would check.

Hope this helps somehow.


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