I am new to TIG welding, and the Dynasty 200DX in particular, so any help will truly be limited. However, I copied your settings, fired up the Dynasty, formatted the machine to your settings, and tried it. It worked just fine. Only two things come to mind. One, is have you set the amperage high enough to actually be noticably variable? For instance, if it were set too low, the range of the foot pedal would only be from zero to the too low setting, and may not be visually discernable. Two, is that on page 33 of your manual, it shows how to reset to factory defaults. Maybe this will help. Greg
I found the problem!
It's in the foot pedal. I took it apart and found there is a geared belt that rotates the potentiometer and one end is connected to a plastic stub that you can see by looking at the top right-hand side of your foot pedal if you have the same one I have. The other end is connected to a spring. The belt broke right where it goes into the stub. The foot pedal looks to be heavy duty like the name says but the belt could probably be a bit stronger since it is a moving part. I put some 5 minute epoxy in the broken part, tried itand it works fine now. Thanks for the replies and your help.
CPB