Hello, I have a treadmill speed controller I want to use on my lathe... I have read just about every forum post about treadmill stuff to try and figure this out. It went full speed and then shut off and the motor looked like it was on the verge of flames. anyways, I have replaced the FET which was blown and I checked the diode and it was still good. The Indicator LED is solid all the time I can post pics if that helps, but I know max has a lot of experience with these types of boards... One more note, when I put it on the lowest speed I am getting around 110VDC on the output granted I have no motor hooked up IDK if that is right. I also have an mc-60 but we can go over that once I figure out this one. I am not an expert but I do know electronics well enough to do just about anything