I have been repairing welding machines for over 25 years. In that time; you can collect a lot of stuff. We used to get a bunch of Maxstar 150's in but I have not seen one in years now. It is time to clean out all my 150 stuff. There are 5 user interface boards, 4 are out and one is in the front panel assy. The board numbers are Miller 212905 - Miller 217787 - Miller 226861 - Miller 226868 (still active in Miller) - There are other parts as well. $125 shipped or might trade for something....Thanks, Chris