I was welding today, and my welder started sputtering. When you pulled the trigger, it would weld for about a second, then kick off. It welded each time for about one second with the trigger held on. Just like it was spot welding.
I hadn't welded enough (I think) to kick in the duty cycle. I believe I have welded more than that before. I shut it off and let it sit for a while. Then I disconnected it, and opened it up, and made sure all the lugs were tight. I wiggled the connecting wires. Everything seemed good.
I fired it up and it took off welding again.
Any idea of what this was?