Hi - I have a MTS 210s machine. I was tig welding today and burned a big hole through the work. I looked at the machine's amperage reading and it was around 40 or so. I turned the amp knob down and the Amps reading dropped to around 25-30 and I started welding again. The next time I looked at the Amps reading it was around 60.

After welding for awhile I noticed that the amperage reading did change when I turned the knob, and other times it wouldn't read anything above 40. I am confused.

So, it seems that the Amps knob is working, but the display is not? Can anyone help me with this?

Thanks