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  1. #1
    Join Date
    Dec 2009
    Location
    Michigan
    Posts
    2

    Default Miller Dynasty 300 DX

    I'm having a problem with a Miller Dynasty 300 DX. I set it up for stick mode, 50 amps. OCV is at 83 volts. When I go to stike an arc she shuts down completely. I lift the rod and OCV is back. Top board has been replaced with new. Output LEM is good. Voltage sense lines are tight. I suspect the control board in front but no spare to swap out. Does anyone have any ideas on this problem? Thanks.

  2. #2
    Join Date
    May 2007
    Location
    Dallas, Texas
    Posts
    323

    Default

    I'd try calling Miller tech support to see what they say.

    If that does not work and you need a reputable repair shop, contact Larry Burross. He knows his stuff and is a very nice guy.

    Applied Equipment, Inc.
    2515 Cartwright St.
    Dallas, Tx 75212

    214-630-9353 phone
    214-630-9354 fax
    888-630-9353 toll-free
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    Email: weldersales@airmail.net <mailto:weldersales@airmail.net>
    Millermatic Passport Plus
    Millermatic 200

    Millermatic 350P with Python
    XMT 304 /w S-64 feeder and 12VS
    Dynasty 300 DX
    Thermal Arc 400 MST
    Victor O/A
    Premier Power Welder for my trail junk.

  3. #3
    Join Date
    Dec 2009
    Location
    Michigan
    Posts
    2

    Default Dynasty 300Dx

    Thanks for the help. I appreciate your time to respond. I hadn't had a chance to answer to replies. I stumped Miller so I'll try the contact you provided.

  4. #4
    Join Date
    May 2006
    Posts
    180

    Default

    Or, send Cruizer (member of this forum) a PM. He's a tech and has helped many here.
    Miller XMT-350 CC/CV
    Miller S-22A wirefeeder
    Bernard 400A "Q" gun
    Miller 30-A Spoolmatic w/WC-24
    CK 210 & WP-18 GTAW torches
    Hypertherm Powermax 30
    O/A Rig, Enco 4x6 bandsaw, etc.

  5. #5
    Join Date
    Oct 2007
    Location
    Medina, Wisconsin
    Posts
    103

    Default

    Quote Originally Posted by Fernando View Post
    I'm having a problem with a Miller Dynasty 300 DX. I set it up for stick mode, 50 amps. OCV is at 83 volts. When I go to stike an arc she shuts down completely. I lift the rod and OCV is back. Top board has been replaced with new. Output LEM is good. Voltage sense lines are tight. I suspect the control board in front but no spare to swap out. Does anyone have any ideas on this problem? Thanks.
    Will the unit do that in AC and DC ? What about Tig, will the unit also do this in the Tig mode ?
    Kirk Kopitzke
    Service Technician
    Miller Electric Mfg. Co.

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