I was trying to play pokemon mystery dungeon on my ds when it powered off after i closed it after a hour of play time without saving. i tried playing again and it powered off after another 20 mins and that repeated a few more times. i came to the conclusion that its the ds because this dosent happen with my 2dsxl and it happens with other games too. also if i lightly move the console around with the lid open then it will freeze, any help is greatley appreciated