Long story short. My dad let me try out his little inverter welder and I pushed it harder than should. It is a Forney AT-100 inverter stick/ TIG unit. I was trying it out with 3/32 7018 rod maxed out. About 3" of weld total. I then waited 5 minutes and ran 3" of 6013 when it turned off. Is it true Forney slapped their name on the Harbor Freight equivalent ? I can't get it to run again. It also has a constant on fan that will not run. Any info would be great. I just don't want to tell him his poor little welder was burnt up by me. Oddly enough the thing had great penetration on prepped and beveled 1/4" box steel