is the 230 a 415v/320v machine only
Hi, Just joined the forum and stumbled across this thread after a lot of googling
I've got the same problem with the same make welder (mines a 160A though) but the boards the same. I've had it around 15-20yrs so its done well.
Mine works but doesn't seem to be providing enough for the feed motor. It works but only at a lower speed and its twitching. Directly off a battery the motor works fine.
Not into electronics so not sure where to start, There is a scorched looking resistor in the middle of the board which is a bit crumbly. Just to the right of D18 in your photo. Is that the same one you had probs with? I'll check tomorrow which number it is.
And did you get any joy from Novatechnology?