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Trouble with an Econo twin HF

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  • Trouble with an Econo twin HF

    I have an old Econo twin HF I tig with. When I run it in ac for aluminium it trips the reset in about 20 or so seconds. Has anyone had this problem ? I am also looking to see if I can locate a service manual for it through miller. Thanks for any ideas

  • #2
    Originally posted by 1949F1 View Post
    I have an old Econo twin HF I tig with. When I run it in ac for aluminium it trips the reset in about 20 or so seconds. Has anyone had this problem ? I am also looking to see if I can locate a service manual for it through miller. Thanks for any ideas
    Bad shorted recifier diode.

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