Hi all, I'm not much of an expert on Diamond Disc machines, but I have a beautiful B250 that stopped working. I had just played a record and went to play a second and the spring would no longer wind. The crank just moves loose. I did not hear the spring break, so I am thinking it may have come disconnected inside the spring barrell. Everything is so large and I've never taken one apart before. Is this an easy thing to check? Is the mechinism in a B250 unique to that early machine or could it be interchanged with another? Thanks for any advise you might have. Dan