Hi guys. I've the same problem. I bought a new battery and changed it but the problem still there. I turned on the controller when it was open trying to guess where the !&&* was the problem, and when I touch the mainboard it was really hot, I've been looking for that piece on ebay, amazon, etc, but it's quite expensive 30 to 40 bucks, so I think it would be better to buy a new one...