1320,
I own a Victrola from 1911. The only thing that can go wrong with them is a part breaking--usually either the mainspring or the arm. If the arm is broken, the thing is useless. Any repair won't give a great sound quality. If the diaphram or a piece of the arm is disconnected then you might be able to reconnect it easily. So you mean it winds, and the table turns, but when you drop the needle on a record you don't get a sound? By the way, if anyone needs needles, I know of a guy in Texas that sells them cheap. I think 3 bucks for 25 or so.
Regards,
Buckleboy