Hello. I Recently picked up an Airco Dip-Pak 200. The thing works great except for in the highest range, it will not arc whatsoever. Still feeds wire, just no arc, on any of the 8 settings of the highest power range. Any clues what this could likely be? I'm quite new to welding, and have never had one opened up until about 15 minutes ago. Looks like it could really only be the transformer, but any other suggestions???????
Thanks in advance.
PatD