My Sega Genesis/Mega Drive II get stuck (the image on the screen seems frozen) after some incidents that occurred to it. It doesn't matter when that is happened, which game did I play or even how hot is it gets. For instance, it happened when it bump from something, like from moving it the slightest with the cord (because it's really short).
But my major concern is when I leave it still, at some pause menu, for a while (because, you know, there weren't so many games for it with a save feature), let's say, for an hour. I can fix it if I'll push the reset button, of course, but the temperature of the Mega Drive is still somewhat between 60°C-80°C.
I don't know if it's a defect with the production, or is it only with mine. I suspect this is happening because of a loose connection between the controller nor the cartridge, because it happened even if staying at "idle" after a while.
I suspect that the reason is due the overheat of the component circled in this image: