I have a Samsung galaxy tab 2, and recently its been having some battery problems. every time I plug the charger in, it gets a red x on the screen. when it gets to 100%, the battery goes dead in less than 1 minute. why, after 2 years of working fine, all this starts in less than 2 weeks? I think I might need to replace the battery, but I have no clue how. I also heard about this guy with the same problem, but he said something about a "motherboard". what is that? or is it just time for a new tablet? I got my tablet at hhgreg, and the guy there wasn't very helpful.