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Thread: Tig300/300 trouble

  1. #1
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    Tig300/300 trouble

    I hav found a thread on an idealarc 7723-c tig300/300 welder, I have one that worked ~4 years ago prior to being moved, now I try to stick weld and only tiny sparks when the rod contacts the work.
    I have checked the 4 main diodes all god the 0-4 ohm pot is good, I have 14.7v on both dc -+, 30v on AC when selected , my machine is set up on 240v single phase, not sure what to check next

  2. #2
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    Re: Tig300/300 trouble

    I did find 1 more thing to try in another thread, with power set to max knobs turned all the way up , hf off , soft start off in dc max the thread said it should weld, only sparks when the electrode hits the work.
    I think I have read all the posts for this machine or the ones that show up when I search for TIG300/300 or 7723-c

  3. #3
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    Re: Tig300/300 trouble

    Welcome! Are you sure you're getting the full 240 volts to the machine, sounds a lot like my Midstates when I lost 1 leg of the 240. My loss was in the on - off switch. Good luck with it!
    IMPEACH BIDEN!
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    UNITWELD 175 AMP 3 IN1 DC
    MIDSTATES 300 AMP AC MACHINE
    GOD HELP AMERICA!
    "Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety. BENJAMIN FRANKLIN

  4. #4
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    Re: Tig300/300 trouble

    Yes, I checked the voltage it was at 244v with my fluke 87VII

  5. #5
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    Re: Tig300/300 trouble

    I saw that several years back "burnt fingers" had posted a link to troubleshooting guides for the tig300/300 7723-c but the files no longer exist would anyone that is on here possibly have them, I can read schematics and do have quality meters but have not found anything wrong yet. I have been using my gas powered miller welder but it is not nearly as consistent as the 300, not that I am that great of a welder but good even power helps.

  6. #6
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    Re: Tig300/300 trouble

    When I mentioned the voltage issue I was talking about voltage at the switch, both sides with the switch in the on position.
    IMPEACH BIDEN!
    NRA LIFE MEMBER

    UNITWELD 175 AMP 3 IN1 DC
    MIDSTATES 300 AMP AC MACHINE
    GOD HELP AMERICA!
    "Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety. BENJAMIN FRANKLIN

  7. #7
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    Re: Tig300/300 trouble

    Quote Originally Posted by CAVEMANN View Post
    When I mentioned the voltage issue I was talking about voltage at the switch, both sides with the switch in the on position.
    I was out of town for the long memorial day weekend, I had checked power to the switch but will check after the switch this weekend. Thanks Cavemann

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