Your problem could be a couple of things.
You could be picking up some contamination when you ball the electrode over steel. I've got a 2"x3"x.25" piece of copper that I use to ball the electrode. Keeps things nice and clean.
You could have a short developing somewhere. We did have troubles with the wiring in the foot pedal from time to time. Also check the wires from the torch for any short. Check in the torch and in the machine. Really, any wire that could get jerked around should be inspected.
Also, check the gas cup for any contamination.
Dirt bad. Clean good. |