About a week ago, my TouchPad would no longer seem to charge. When I plug it in, it just flashes the plug image and low battery image. I tried several fixes, including twisting the charger and holding down the power and home buttons for 15+ seconds. Then I got it to charge, but the next day it was dead again and will not charge once again. I don't think there is anything wrong with the port because when I try a different charger, it says to use the manufacturer's charger for a reliable charge, so it recognizes when something is plugged into it. Could it be that the ac adapter is just no longer good? Or is there anything else I can try before I attempt to buy another plug on eBay?