Frank,
Apologies for the slow response, haven't been able to check the forum for a while. You have a bad circuit board, p/n 860-573-666. Try calling
WCTA (a new division of Lincoln Electric) at 866.236.0044, then option 3. I talked to them a couple of days ago about this particular part, I think that they will have something available shortly. Be patient (don't
toss the welder yet) and good luck.