Can You Help? My Pioneer PD-M640 6cd Player Loads But Won't Play/spin CD's. ONLY Source Voltages Are Present On The PCB. No Voltages Present At Motor Or IC's.

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Anonymous answered
Cd player will take the cd out of holder, put it back & grab another. It does the same thing with all disk.
thanked the writer.
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Anonymous commented
I didn't see a fix or suggestion in your answer. I thought I had it fixed over last weekend when I found the lens to the laser in the bottom of the chassis. It played perfectly after I installed it, then after I put it back together again - it stopped working. Can't believe it. I guess the motor is good since it worked for 15 minutes.????
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Now it will play only one disc.  It will play in any of the six trays-but it is the only CD that will play.  I've tried many CD's.  Can't figure out why it will play only this one???
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Anonymous answered
You will find that there are several (cp`s)) in these units which are circuit protectors most  likely one is open circuit causing loss of voltage 2 motor(these are just fuses but look  like transistors) you might need manual to chase voltage

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