Need some help. I have a model S-64 Wire feeder has been giving me some problems for the past few months. We have it set up on a production turn table and it does about a 8" dia. circle weld. It is not all the time but during a weld the weld will get wide and hotter till it burns through. Also not sure if this has anything to do with it but I can not turn down the potentiometer. I can go higher but I get down to about 600 and it goes crazy. Think that could be it? Or maybe one of the boards?
Any help would be greatly appreciated.