humming

just bought a lasonic TRC-931 and im trying to restore it. mostly everything on it is fuctional but there is no sound other than a humming noise and you can barely hear and music. please if anyone has come across this before and has successfully fixed the problem id be grateful to be told about it.

So late last night I was in the middle of filming a music video and naturally we were using some of the big boxes. We were playing the 777 and I moved it from one spot to another taking care to be as gentle as possible, like I am with ALL of my treasured boxes. When I put it down on the ground...