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  1. #1
    Join Date
    May 2013

    Default Millermatic 250 Surging Problem

    I have a MM250 that seems to be surging. It will not hold a continous arc at low voltage on thin metal. I have to turn voltage up to get it to weld and then its too hot and burns through. On thicker metal it sounds like it is surging and weak.

    i have a new gun and new roll of wire. Wire speed seems to be working fine.

    Any suggestions on where to start??????

    Last edited by JRS; 05-04-2013 at 01:56 PM.

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