My friend downgraded his Wii from 4.0 to 3.2. I don't know why he did such a stupid thing but he did. So he gave me the Wii and said if i can fix it i can keep it. So currently it boots to a black screen the controllers work and the disc drive works.
I found a post on Wiihacks saying there are...
The worst is when its a dry poop, then you spend 20 minutes and ha!f a roll of TP wiping. Its like wiping TP over a magic marker, just won't stop showing.