I haven't played the machine in a few months but it worked fine when last played. Now when I turn it on and play it, it will freeze up after a few minutes of play. Self test appears fine. Any ideas? I'm not very good at fixing these things.
If it plays for a few minutes and freezes after likely warming up, then I'd suspect either a connector or socket. Also, you could check the p/s for +5, but I'd reseat connectors and think about reseating chips.