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Miller Dynasty DX high frequency not working correctly

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  • Miller Dynasty DX high frequency not working correctly

    Late 90's vintage (all knobs, not touch pads, large cabinet like an xmt304) sometimes high frequency gives an approx 2hz spark when set to DC hf start & will not actually start running like that, only will start with lift arc. Sometimes turning the machine off then on again will restore proper operation. Looking at the manual https://www.millerwelds.com/files/ow...uals/O357D.pdf does not mention points & no mention of a points adjustment in the manual, so I guess there are none. Is there something I can fix or adjust or am I looking at a dealer fix?

  • #2
    Opened up the machine today, it apparently does have points. They were set to .015 so I reset to .012 per miller. Still the same problem, though I can now pull away to 1/2-3/4" and get a nice shower of sparks. At closer gap, say from 1/16 to 3/8", I get the 2 Hz spark. Still no arc initiated, and everything I can see inside the machine LOOKS healthy. Miller says when set to HF remote the unit should provide arc power and then shut off the high freq when an arc is established rather than turning on power after a few seconds of high freq, which is how I initially figured it worked. Again, lift arc works fine. I'm thinking I may need to check the switch in the pedal though the pot in it works fine maybe that has something to do with it. Any thoughts?

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    • #3
      No one seems to be picking up on this so I'll give it a try although I do not have nor ever have had a Dynasty. Not that I wouldn't like one.
      What is this 2hz (2 cycles per second) spark you are talking about? If you have high frequency and you can scratch start weld it sounds like all the components are there. Where are you? Maybe someone with a Dynasty who is close by could go over and give it a spin to see what they think is or is not going on.
      ---Meltedmetal

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      • #4
        The high freq, when electrode is close, provides a 2 HZ spark. When I increase the gap from electrode to work, the hi freq then provides a continuous SHOWER of sparks. Welding power does not follow when using hf remote regardless of pedal position. The only way to get welding power is to use lift arc

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        • #5
          No one I know would call 2 hertz high frequency. Where are you getting that number? Do you have the correct remote pedal for the machine? Verify the operation of the pedal at the 14 pin connector. Is this machine new to you and stopped working or has it never worked properly since you have owned it? You could call Miller technical and see what they will tell you or take it in to be looked at.
          ---Meltedmetal

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          • #6
            Might be best for the OP to call Tech Support

            920-735-4356 or 1-800-4-A-Miller (1-800-426-4553)



            The "Dynasty DX" is a bit unusual and has very little in common ... other than naming ...with present Dynasty machines...

            https://www.millerwelds.com/files/ow...O2217A_MIL.pdf

            Last edited by H80N; 12-05-2016, 11:46 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

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            • #7
              The 2HZ probably refers to the PULSE setting...&. has nothing to do with the HF
              .

              *******************************************
              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


              • #8
                Originally posted by H80N View Post
                The 2HZ probably refers to the PULSE setting...&. has nothing to do with the HF
                I guess that would make sense. If he's lucky the problem is only incorrect settings.
                ---Meltedmetal

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