I found a JVC stereo shelf system that had a CD player that worked when I first tested it (brought home from the thrift store - I have 2 weeks to return it if it doesn't work) but now it hangs and I hear a hum. It may have a belt that worked at first, but then failed. It's a 1994 unit and I'm waiting to marry it to a the correct remote found on eBay. The whole thing will have cost me $17, and is easily sold on eBay, even as "parts or repair" for substantially more.

I found a pair of Polk Audio speakers a while back that live in the other room where I can test equipment, and those are what I used to test this. Testing the sound now with the radio, it is amazing. But it does needs work. This was sold in the day when the owner's manual included all of the schematics, the parts list, and even an exploded view of the insides of the device. I can manage simple repairs, so since this cost me $6.99 I think it's worth taking the time to fiddle with the CD player. I haven't yet tested the dual cassette players. It has an aux port in back so I can run the photograph through it.