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Test a Welder; No Power

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  • G-ManBart
    replied
    Got it home and unloaded uneventfully. I've powered it up and briefly run beads both AC and DC and everything seems to work. I disconnected the cooler for transport so only ran it a few seconds at a time so I didn't smoke the torch. The cooler works (pumped out most of the coolant with the output line disconnected and was planning on cleaning the tank and then hooking it all back up to be able to weld more than a few seconds at a time. It all needs a good cleaning, but seems to be a sound unit. The serial number shows a 1985 manual, so it's on the newer side for a 330 A/BP unless I'm confused.

    If anybody's interested....$700 for the whole deal, or $500 without the cooler.
    Attached Files
    Last edited by G-ManBart; 12-16-2020, 08:00 PM.

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  • ryanjones2150
    replied
    I’ll take it. But since we’ve all been afflicted by the wu-flu, I need contactless delivery.

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  • G-ManBart
    replied
    Originally posted by stickermigtigger View Post
    Where is it they have to drive to?
    I'm in Michigan...just a bit north of Toledo, Ohio.

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  • stickermigtigger
    replied
    Where is it they have to drive to?

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  • G-ManBart
    replied
    Originally posted by ryanjones2150 View Post
    You have a forklift or a crane?
    I've got a 12,000lb track loader with a forklift attachment and a 2 ton crane so I'm good there!

    I can't see this replacing my Syncrowave 250DX, but I've wanted to try welding with one for a while. This one is clean, has a nice Bernard cooler, pedal, etc, etc and was cheap so I figured I'd give it a try, clean it up and then sell it to someone at a very reasonable price...bonus for them is they'll be able to try it before spending any money.

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  • ryanjones2150
    replied
    You have a forklift or a crane?

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  • G-ManBart
    replied
    Looks like I got a pretty good deal on a clean 330 A/BP that I should be picking up soon...very excited to get to try one finally!

    I'm not planning to keep it, so if someone wants to drive here from NC they might get a bargain....just sayin'

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  • ryanjones2150
    replied
    I bet you’re right.

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  • Bushytails
    replied
    If you have two pedals, I'm sure there's people on this forum who would take one off your hands!

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  • ryanjones2150
    replied
    I have that machine, and unless it comes with a power cord, foot pedal, tig lead, work lead and stick lead of decent shape and length AND a cooler....ok, that might be pushing it....I wouldn’t drop a grand on it. For that much, it would have to be in really good shape. If that’s what you’re looking for, be patient, they pop up fairly often for less than a grand. I think I paid $500 or $700....something like that....for mine and it came with two foot pedals and leads. You just have to keep your eye out.

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  • MAC702
    replied
    I'd be bringing a generator before buying a welder I couldn't test. I also know how to tap a panel. I guess I just don't understand how it can't be tested with power.

    But if not working, the easiest way, by far, to test what's wrong is to plug it in and trace the live power inside the machine. I wouldn't even attempt to test a machine without plugging it in first. And while I'm no welder repairman, I'm a **** good electrician.

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  • Aeronca41
    replied
    I'm with Bushy--not much will go wrong with a 330 that can't be economically repaired except not having a foot pedal--they are very pricey! The major component part in there is the mag amp, and while I suppose it's possible for one to fail, I have never heard of even one instance. The rest is just diodes, relays, switches, resistors, capacitors. Some of them may cost a hundred or so, but most things are 50 bucks or less. I can't think of anything you could test with a multimeter without power that would be of much consequence.

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  • stickermigtigger
    replied
    MAC702: Used welder. Can’t strike an arc to test at buyer’s location. Won’t know if it works till I get it home where I can plug it in (after paying for it).

    330 is my ‘want’. My question is about buying a used welder in general.

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  • Bushytails
    replied
    It's a 330a/bp. It'll work with at most minor repairs. Just make sure it comes with the foot pedal.

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  • MAC702
    replied
    You want to test one that doesn't work to find where the problem is? Or test one that supposedly works, but actually welding with it isn't an option?

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