I did some welding on my new 200 ac/dc machine the last couple days. At first the machine worked great for about 1.5 hrs and then it would not start an arc. I turned the machine off and unplugged everything and reconnected everything. The machine started back up and worked for a few minutes and then stopped, no arc.
The next morning (yesterday) the machine worked all day with no issues.
So I am a little concerned now since I had those issues. But besides that the welder is great. It works better than our Miller syncrowave 351 at work. And close to the dynasty 200 we have.
Here is a picture of the first pass on AC welding aluminum. Just a test pass.