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Dynasty 350 Parts

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  • bulletfab
    replied
    Thanks Cruizer, just send you an email

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  • cruizer
    replied
    Well, yes as the unit has to determine the input voltage BEFORE the regulators in the Mods. yes, your input Mod is blown. . Email me at [email protected]. Perhaps I can throw you the Preinspection for the unit BEFORE you start throwing useless parts at it.

    Leave a comment:


  • bulletfab
    replied
    One thing I forgot to mention was that there was about a 5 second delay from when I powered up till the pop, maybe longer. In addition to fixing my machine I'm more curious as the the root cause. I'm kinda a need to know guy.

    Leave a comment:


  • bulletfab
    replied
    I changed the primary board with the resistor that blew. Cruizer is it common for those Semikron mods to fail if the primary board fails? They seem isolated and feedback failure doesn't look likely. Do you have a data sheet on those mods? Thanks, Mike

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  • cruizer
    replied
    Made a popping sound as the input mod pooched itself. So replacing PC5 will do nothing until the mother primary board and its mods are replaced

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  • Aeronca41
    replied
    Originally posted by Miller Welders View Post

    Thank you, Aeronca41! That's great to hear. We're always happy to help.
    Keep up the good work!

    Leave a comment:


  • Miller Welders
    replied
    Originally posted by Aeronca41 View Post
    Cruizer is a professional welder tech, factory certified, in Canada. He watches most threads here when he's able and really knows his stuff. Just start a new thread with your questions and he will probably join in the discussion. There are a number of other really smart guys here also, so ask away. Great group here, that has helped me out several times, in one case saving me from blowing an expensive board in my Trailblazer. And I now have an avatar thanks to H80N!

    Miller support is why I have Miller welders. Other people make some good products, but I don't think any other big guys provide help like Miller. There are no doubt some who would take issue wth that; everyone's entitled to their opinion, but that's mine. Also lots of good support reports on HTP (usaweld.com). Good place to look for supplies, great people.

    Thank you, Aeronca41! That's great to hear. We're always happy to help.

    Leave a comment:


  • bulletfab
    replied
    Also possibly the main function of 233139 as well. By it's description from Miller does this board store the programable settings for the Dynasty?

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  • bulletfab
    replied
    Yes thank you Cruizer / H80N / Aeronca41 / and everyone else. I am amazed at the timely response you all have given. And I only posted my question
    this morning. I can tell there are many generous people here. I hope and will try to return the favor if I can. I understand Cruizer you are a Miller tech in Canada? I don't know if this is out of line but would it be possible to get some input power voltages to board 233139 ? If this is proprietary info from Miller I apologize. Don't want to overstep my bounds.

    Leave a comment:


  • H80N
    replied
    Originally posted by bulletfab View Post
    Since I have the equipment and time I think I will try to fix it myself. If not I will invest the 600-700 and gamble there is nothing else wrong.
    Cruizer likely has some insight into the probable failure mode...

    his advice might save you a bucket of money & tears... in diagnosis and repair...

    hard to beat the experience of somebody who has fixed the same model many times
    Last edited by H80N; 06-06-2016, 03:51 PM.

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  • ryanjones2150
    replied
    Brother, you lucked out and found the right place. I've read on other forums looking for answers to this and that, I even signed up for a few, usually because they required me to for some sort of permission to do something. I came here and asked a question on how to wire a drum switch to a split phase motor to power an exhaust fan that I wanted to reverse when needed. Yup, not a dadgum thing to do with a welder. Not only did I get the help I need before I let the smoke out of that motor, but I've met some excellent human beings too. And with 32 years of experience, hopefully you'll be able to help someone in return. I have no doubt that you have the knowledge to do so. <br />
    <br />
    A very gracious welcome to you, sir.

    Leave a comment:


  • bulletfab
    replied
    Since I have the equipment and time I think I will try to fix it myself. If not I will invest the 600-700 and gamble there is nothing else wrong.

    Leave a comment:


  • bulletfab
    replied
    The machine made a popping sound when turned on. Was dead. Took it in for repair. Estimate was 3200 with no guarantee. I decided to check it out myself. Found that the primary board (228493B) had blown a wire wound resistor. I was fortunate to find a new board and replaced it. Before powering up
    I notice board 233139 had a blown pulse width modulator and mosfet.

    Leave a comment:


  • cruizer
    replied
    Just an updated part# however, what makes you think this board is gone. I mean, its not a part that generally ever goes. Or do you have it in somewhere and they are guessing? Won\t come up as a error code......

    Leave a comment:


  • Aeronca41
    replied
    bulletfab, you have just been answered by two of the Wizards-I'm not one of them. 😊

    Leave a comment:

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