I just got a Derby Saturn. It's in great shape cosmetically, but it has a strange problem. It'll run fine for quite a while. Sometimes it happens as quickly as 15 minutes, sometimes it takes about an hour, but eventually the game sound will go and then about a minute later the game will freeze. Sometimes the game will just freeze outright. It doesn't matter what game is in the console. I've cleaned the lazer lens too, so that's not it. Any solution? Know anybody who'd be willing to repair this?