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Old 08-29-2009, 10:29 AM
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Fixing a mig welder

Hey I was just wondering if anybody can come up with any suggestions for me before I take this thing to a repair shop. It is an older 110v Hobart mig. It has always been a good welder and has a fair amount of hours on it but now it just flips my breaker when I try weld. I have tried different breakers and outlets. Anything obvious I can check before taking it in? Thanks.

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Old 08-29-2009, 10:44 AM
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Check the power supply cord going into the housing, these things have been known to short against the case and cause the breaker to trip. Since it is tripping the outlet breaker it probably has something to do with the supply cord, these things get pulled, twisted, stepped on and have things dropped on them sometimes so make sure it is not just a bad cord either outside or inside the welder.
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Old 08-29-2009, 10:46 AM
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If its tripping the breaker in your electrical panel, theres a couple things to check, take the covers off, have a good look at the transformer in the machine, if its blown you will most likely see it, also check the diodes in the machine to make sure one of those hasn't shorted out on you.
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Old 08-29-2009, 10:59 AM
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Ok thanks i will try check the obvious, I really dont know much about these things and im not an electrical specialist but I will see what i can do!
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Old 08-29-2009, 12:35 PM
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Just sent my 20 yr old miller in to get rebuilt,
runs like new and looks like new and the bill was only $375
Better than spendin 2 grand for a new 1.
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