I received the replacement switch. All speeds 1-2-3-4 work. I did notice on the replacemnt  ( used) that the same location showed some burning (speded 4) so I don't know if this is common. Speed 3 and 4 are still getting hot, I don't know how hot or warm these are supposed to get, I didn't let it get to hot. Speeds 1 and 2 seem to be fine.

So I'm guessing there might be a resistor problem on speeds 3 and 4 or a short somewhere. Can anyone tell me where to find the resistors at the fan? I have a testor, I'm guessing I'm looking for continuity (ground and terminal?)at the plug?