I picked up a non-working Beocord 5000 cassette player alongside a Beomaster 5000 amp and RL60 speakers a while ago and got around to opening up the Beocord today to see why it wouldn't play the tape that was stuck inside. The drawer would open and close with a little difficulty and all the lights and buttons seemed to work.
My thought was that the belts were bad.
After a little fumbling (no service manual) I figured out to remove the two back screws which allowed me to remove the entire cover (very cool). I was staring at the circuit board (which is hinged btw - very very cool b&o!). Everything was very dirty, and the belts had turned to mush. Literally, thick black ink, that was almost impossible to scub off my hands.
I don't have tapes, and didn't fancy fixing this one since working ones seem to go on eBay for $60-70 USD. So, reluctantly, this one is headed to the dumpster. If anyone is in need of any parts, let me know and I'll send them out to you.
Here are the autopsy pics :)