There were two mid 70s Lincoln "crackerbox" 220v welders in the shop. I had my way with the both of them today. They both appear to be the same, physically. I blew out the cob webs and dirt dobbers, cleaned up the contacts on the dial, replaced the leads and tested. One of them is now in good working order.
The other had absolutely no response to me throwing the power switch. I heard nothing other than the sound of the bar clicking on the switch - no fan, no "humming" I'd expect. Looking inside they don't seem complicated, but I know nothing of working on them. I saw no fuses or fuse-able links. I'm curious if it is worth spending more time/money on it, or if its in my best interest to call it "spare parts". I'd rather not trash it, but I know their cost new.
I'd appreciate you sharing any experience or knowledge you may have.