My Dreamcast will only play for about 10-20 minutes (30 MAX) before freaking out in a number of ways (glitching into oblivion/refusing to load/going to a blank screen but the music still plays/just going completely blank/freezing up/returning me to the main system option screen/etc.) At first I thought maybe it was the game (it had a few light scratches, but nothing that should warrant such behavior), but after trying all my games I've discovered that it does it with all of them. After the first 20-ish minute play before it freezes it rarely ever works again until at least an hour later.
This leads me to believe that maybe it's an overheating problem? The fan is working properly, as far as I can tell. Anyone know of something else that could be the problem? Any suggestions at all would be greatly appreciated. I miss my Dreamcast