Please help...I'm not very knowledgeable about the Wii but the remote keeps turning off by itself. I have replaced batteries, tried taking off the motion plus thing, tried rechargeable batteries...but this thing keeps turning off on its own. We will be in the middle of any game and it will turn off. Is there something that I have done wrong or is it best to just exchange the remote? (it is the black remote with motion plus). Thanks for any help.