I have 2 DSi XLs that I have bought for my younger cousins and after a few weeks of use on both of them suddenly they stopped powering on. Now they will try to come on with the chargers plugged in but the charge light is now blinking and the screens just shut off. I read on Nintendo.com that if the charge light is blinking it indicates that the battery isn't installed correctly. Well, after have a look at the batteries they are obviously inserted correctly and nothing is wrong with either DS charger. Neither DS has a warranty and I do have knowledge in repairing consoles and computers but not sure where to start with a handheld. Any ideas of what the problem could be and how it may be fixed?