Metered out the pin/switch wiring.
I'm thinking of doing the same mod
I have a foot pedal so can do without the right switch. Replacing the left up/down with front panel buttons is a good idea for programming - or use a momentary centre off toggle switch similar to the mode selector.
Let me...
I was fortunate this welder came complete with torch, brandnew earth clamp & wire, and foot pedal.
I can imagine it might be hard to find a torch, especially with the Euro connector - maybe it's a hint you might need to modify to allow a standard torch.
Doug
Turns out 3 resistors at the exorbitant price of $1.80 has got this welder back on the road. Thanks for the info above.
Now that I have it running, do most still run the original torch or have retro fitted another. Do standard cups fit the Castotig torch?
Doug
I've just picked a Castolin 2002 ACDC up - not working , no volts. Having read these threads I took a punt hoping it was the same resistor issue. Measured the 270ohm & 560ohm resistor - all open. I've ordered replacement resistors and fingers crossed that's the issue.
Will update shortly...