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  • Comparc TIG 250

    Hoping someone can help!
    I recently picked up a Comparc TIG-250... It looks identical to a Older Syncrowave 250, has a shunt, and seems to have the same wiring numbers as the older syncros do.
    Problem with it is.. It has no amperage control, nor do the voltage and amperage gauges work... It burns a rod like its set at 300 amps.. In another words.. violently!
    So far I have:
    Replaced the EMI filter
    tried using it with the EMI filter unhooked
    Tried using a remote and the panel control knobs
    checked the panels rheostat - which checked out good.
    Visually inspected the circuitboard - no visible burns
    Visually inspected the wires... all look ok..
    Other then a new circuitboard.. what else can I check?

    Is there still a LEM conversion kit available for the older millers?



  • #2
    Originally posted by andy the digger View Post
    Hoping someone can help!
    I recently picked up a Comparc TIG-250... It looks identical to a Older Syncrowave 250, has a shunt, and seems to have the same wiring numbers as the older syncros do.
    Problem with it is.. It has no amperage control, nor do the voltage and amperage gauges work... It burns a rod like its set at 300 amps.. In another words.. violently!
    So far I have:
    Replaced the EMI filter
    tried using it with the EMI filter unhooked
    Tried using a remote and the panel control knobs
    checked the panels rheostat - which checked out good.
    Visually inspected the circuitboard - no visible burns
    Visually inspected the wires... all look ok..
    Other then a new circuitboard.. what else can I check?

    Is there still a LEM conversion kit available for the older millers?

    SERIAL NUMBER...PLS

    clear pics of the front panel would sure help to ease identification..
    .

    *******************************************
    The more you know, The better you know, How little you know

    “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

    Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

    My Blue Stuff:
    Dynasty 350DX Tigrunner
    Dynasty 200DX
    Millermatic 350P w/25ft Alumapro & 30A
    Millermatic 200

    TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000

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    • #3
      Serial number is -
      345-004H7

      Comment


      • #4
        Originally posted by andy the digger View Post
        Serial number is -
        345-004H7
        Was hoping the serial was a MILLER#.... was unable to cross it...

        I agree... it dos look like an OEM Sync

        Hopefully Cruizer or Miller Kevin can help... they have deeper resources
        Last edited by H80N; 01-29-2016, 10:53 AM.
        .

        *******************************************
        The more you know, The better you know, How little you know

        “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

        Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

        My Blue Stuff:
        Dynasty 350DX Tigrunner
        Dynasty 200DX
        Millermatic 350P w/25ft Alumapro & 30A
        Millermatic 200

        TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000

        Comment


        • #5
          I might be able to cross-reference the wiring on mine to a miller serial number..
          A lot of the numbers on the wires match some of the wiring diagrams I have compared too so far without getting too deep into it....
          None however use the same plug identifying tags ( eg Instead of RC, my plugs are listed as R only )
          It does have the wiring diagram on the sidepanel.. I will take a photo of it and post it later if would help.
          One thing I forgot to mention.. When I bought the welder, the previous owner had hooked it up to show me it would work.. The first time he came from the breaker box after switching it on, it didn't work.. He then returned to the breaker, and came back 10 minutes later.. I think he may have wired it incorrectly.. Ground to L1, L1 to ground maybe.. Unsure though..

          Comment


          • #6
            Well, Not a Miller, actual Mexican Comparc

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