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Old TR-250 HF

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  • Old TR-250 HF

    I have an old hobart TR-250 HF machine that was working fine. The torch hit the side of the machine and arced out, and now it doesnot tig. The machine just makes a humming noise when you try to weld. Has this ever happened to any one? Or could any one tell me what is wrong with it?

  • #2
    dland,

    When you depress the foot pedal and scratch the electrode will it start an arc?
    Do you get any high frequency to jump from the electrode to the work piece?

    Keith

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