My late model Miller 330 power supply quit arc starting from the pedal the other night. I imagine it is a relay that has failed. The gas and water valves both still activate from the pedal and time in and out correctly but the arc won't. Put it in manual instead of remote and it arc starts fine. My welder has a timer that I believe is supposed to provide preflow before the arc will start. I can't find it in the wiring diagram in the cover but it all looks factory to me. I think the relay jd-8 on the pre flow timer is bad and it won't close in. Anybody got any ideas or suggestions? Thanks Brian