If it's anything other than a simple fix, or if it's fixable but only at high cost, I recommend you junk it and get one of the newer "post CD transports" such as the Audiolab 6000 CDT ($550) or the similar Cambridge model. That's what I did, replacing my Mark Levinson/Proceed CDT ($2,000 new) with the Audiolab. And I was amazed that the Audiolab took my system up several levels! I'm not kidding, very impressive. All the expense and searching to fix the Mark Levinson/Proceed --and it was a total waste of time when such fine new transports are now availab.e
I'm going through my CD collection and it's like I just I'm hearing them for the first time. The improvement is that good.