Miller Dynasty 300 DX

[Fernando]

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.

[crawler]

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
214-577-9353 cell
786-629-9353 computer
Email: weldersales@airmail.net <mailto:weldersales@airmail.net>

[Fernando]

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.

[Dmaxer]

Or, send Cruizer (member of this forum) a PM. He's a tech and has helped many here.

[Miller servicedude]

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 ?