Trying to repair this Wii for my nephew and it just turns on with a black screen. No idea what happened to this machine and it probably sat for a while cause the batteries in the WiiMote had exploded. I've tried some suggestions I Google'd like using NUSDownloader_v19 to download wad files and place them in a wad forlder in a SD Card. Doesn't do nothing when I turn on the machine. Any help or suggestions on what to do?