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[MAC702]

It should run just fine with no load for as long as you like.

[MAC702]

Wow. What's the cost for repair versus replacement on something like this? Or is it mostly time and self-sufficiency that make repair the choice?...

[MAC702]

If you have to ask, then no. Just keep the spare argon tank in the next room out of the way.

[MAC702]

Same here. No one taught me to do that. I just thought it might work and it did....

[MAC702]

Totally.

[MAC702]

Any changes to settings, materials, or project, at all, since it was working just fine? New tip, correctly matched to the wire?

Verify wire speed and that it's not hanging up on something.

[MAC702]

If it's able to be wired to accept 230 V or 460 V nominal inputs, there isn't any practical difference in how well it will weld between them.

Is it currently wired for 230 V input?

Have I missed where we've been given the model number or machine specifics?...

[MAC702]

Why do you think the breakers are weak? That's a rare diagnosis.

No, you "can't" use the weld terminals for AC electrical supply. The engineering involved to even attempt it would be harder than acquiring the larger generator or more efficient inverter-based plug-in machine.

[MAC702]

Man, do you need to spend a lot more money!...

[MAC702]

There must be a switch somewhere that selects spoolgun or stick. The contactor would only be used on spoolgun. With stick, when selected for stick, the leads should be hot all the time. Is there a big switch that changes the power to go directly to the stick leads studs, and not through the contactor?...

[MAC702]

This is not a grammar issue. You are actually misleading us, causing us to think about the wrong parts of your machine and issue. That is a contactor, not a breaker. When you say "breaker" I start thinking about the breaker. Which made no sense whatsoever. Now that we know it's a contactor,...