Hello group! New member here!(New member section tried had error message)My pleasure! New to me used purchase as/is machine will not weld. The display lights and lets you set It but returns to zero when pedal engaged. Gas seems to flow right. Machine is very dirty inside possibly sticky grinding dust. Ive ordered a new thermostat for it. Im fixing to get a 500 ohm resistor in to drain the large capacitors for a deep cleaning and thermostat install. Ive printed operator manual and a service manual and plan to follow best I can with testing. Any ideas? Thanks in advance.