Well, my luck has struck again. Welding along today at 75 amps, DC, no pulse when all of the sudden I couldn't strike an arc. I tried grounding the tungsten to the work repeatedly and nothing, looked over at the machine and the panel is dark with the fan running, WTF!?! Of course this happens when I'm seriously under the gun with work. Called tech support, he said cycle the breaker on the wall, maybe a leg isnt making good contact... well of course that didn't work. No other ideas from tech. Gave me an RA number and said I may could get a board sent to me to try. Two calls in so far, no response. Really really anxious as I've read some horror stories on warranty or service work. The machine is 6 months old, 2015 model, single phase, NOT worked hard at all. Is there any diagnosing I can do myself? I can verify with my meter that theres 240V going to the board at one point, but have no display lights at all and nothing from the gas solenoid when hitting the pedal or switch. Does this seems like a board failure?