by mjwraw » 27 Jun 2012 16:30
I'm in no way an expert on these, but having had a quick Google I'd say the platter isn't designed to be removable, so there's probably something broken I'm afraid, in which case you'd need to find a detailed design drawing on the internet if you want to try and fix it yourself, (and I can't find one), or pay a visit to your local hi-fi shop to see if they can help.