I have a miller xmt 350 mpa that the display is not working, the fan runs all the time, the spool gun feed's but no power. anyone have any idea what the problem my be? It hadn't been used for several months I made two 4 inch welds and started another when it quit.I am also looking for service manual for this machine.Last edited by Ujoint; 05-30-2021 at 01:30 PM.