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  • Airco Heliwelder High current problem and solution

    Heliwelder IV High current problem and solution


    Machine:
    Heliwelder IV 1341-0176 code 665


    Problem:
    Weld current at range maximum regardless of range selection or weld current adjustment


    Research:
    I obtained a copy...
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    Last edited by ceceljoeh; 12-30-2014, 04:49 AM. Reason: more accurate description

  • ford8700
    started a topic XMT 300CC/CV Main Board Problems

    XMT 300CC/CV Main Board Problems

    I have blown components on the main PC1 board. The serial number of the welder is KA846407. Board Assembly number 138735. From visual inspection I have the following bad components: Q4, Q6, Q8, HS1, SR1, T1.
    Q4,Q6,Q8 = IRF543 N-channel MOSFET.
    HS1 = ??.
    SR1 = KBU8B single...
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  • PTWelder
    started a topic Spectrum 375 Problem

    Spectrum 375 Problem

    Hello, Everyone
    At work we purchased a new Miller 375 Cutmate six years ago. I would estimate that this unit has less than 5 total hours of use on it. I tried to use it a few weeks ago, air blows out of the torch, no arc, cup light on machine comes on. I replaced the cup, tips, swirl ring....
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