I need some help from a person that knows electrical problems. I have
used welder that I am refurbishing. I have made a repair to th
interface board that had a blown capacitor. When I turned that welde
on it seemed that everything was okay with the fix so I am testing th
weld capabilities. As I don't have it set up for the tig yet, I am jus
testing the "arc" functions. When I selected AC and used a 7018 3/32
rod I was able to run a bead. When I selected DC (straight polarity) o
DC (reverse polarity) and turned the welder on it flipped the circui
breaker. The question(s) that I have:
1) Is this a dead short in the rectifier bridge? diode? If so how can
check the fault?
2) Can can check to see if the high frequency works using the "stick
Thanks for any help.
16 years ago