Thanks for the ideas. I know nothing about these things, and have not removed the back, so I really can't answer any of those questions. Even if I removed the back I doubt I would know what I was looking at. However, it is intermittent. For example tonight, I played it for 4 hours or so and it played beautifully, like new. Almost like it knew if it didn't shape up I might start messing around in there. NObody wants that!
