I just tried my PowerTig 250EX-2013 and it make a spark when you first turn it on, I guess as Rambozo referred to as self test on start up. Sound good to me. I will have to try my MTS250S in Tig mod turn it off and on again to see if it does the same later today.
Everlast PowerTig 325EXT (Canada)
Everlast Power I Mig 250 (Canada)
Everlast PowerPlasma 80S (Canada)
Everlast PowerCool W300 (Canada)
Everlast PowerMTS 250S Fitted with a 30A Spoolgun(Canada)
Miller Dynasty 400 wireless(Canada)
Millermatic 252 plus 30A Spoolgun(Canada)