Hi, I have a Dialarc hf (serial # JA382685) and I was welding up a boat prop and my welding arc dropped to almost nothing, the circuit breaker on the machine tripped and when I reset it and turn on the power the breaker trips as soon as the switch is turned on? I know some thing has shorted out but what?, and is it an easy fix, or do I need to get another welder? The circuit breaker feeding power to the machine is double 50 and it works great and has not tripped. The welder still will weld on high freq if I put the selector switch all the way up in high range and the other switch is on AC I have no amp control just one steady currant.