I just bought a Nintendo DS lite and about every 20 minutes to an hour it will just restart randomly. I've been told it's an issue with the battery being low, but I always keep it charged and it happens even when I'm playing with it plugged in. Has anyone else had this problem/knows what it might be?
Try removing the battery and playing it plugged in to see if it makes a difference if it does it's a battery problem (buy a new battery), if not and it still turns off you should get the DS replaced.