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  1. #1
    Join Date
    Feb 2013
    Posts
    27

    Default HF Troubleshooting Dynasty 350

    If anyone knows where I can buy the proper service manual for a Dynasty 350 SN LJ300078L I'd appreciate a link. My machine is out of warranty and has a small problem with the HF. I want to fix it and I'm comfortable fixing it myself. I need to reference Miller's manual so that I'm confident I'm back in their specs. If you have a pdf that works too. Thanks!
    Last edited by wumpscut223; 11-03-2013 at 08:44 PM.

  2. #2
    Join Date
    Feb 2013
    Posts
    27

    Default

    My problem is below... advice on a fix would make me happy too...
    I got a deal on a Tigrunner Dynasty 350 that (I hope) only has a small problem. I like tinkering on everything including electrical so fixing it will be fun along with the functioning welder. It has a HF start issue that is intermittent. You can watch this exact unit weld at http://www.youtube.com/watch?v=GqETCTp5DAs

    The serial is : LJ300078L

    Where would you start with troubleshooting?

  3. #3
    Join Date
    Aug 2010
    Location
    Los Angeles
    Posts
    1,168

    Default

    I had a similar problem when I bought my first Dynasty350 pre-blue lightning. I messed with start parameters and fouled it up so bad I called my rep. He came out and did a default parameters reset and it worked perfect since.

    I would do a parameter reset just to rule that out.
    Nothing welded, Nothing gained

    Miller Dynasty700DX
    3 ea. Miller Dynasty350DX
    Miller Dynasty200DX
    ThermalArc 400 GTSW
    MillerMatic350P
    MillerMatic200 with spoolgun
    MKCobraMig260
    Lincoln SP-170T
    Linde UCC305 (sold 2011)
    Hypertherm 1250
    Hypertherm 800
    PlasmaCam CNC cutter
    Fadal Toolroom CNC Mill
    SiberHegner CNC Mill
    2 ea. Bridgeport
    LeBlond 15" Lathe
    Haberle 18" Cold Saw
    Doringer 14" Cold Saw
    6 foot x 12 foot Mojave granite

  4. #4
    Join Date
    Aug 2008
    Posts
    113

    Default Service Manual Dynasty 350

    Sounds like this is the one from eBay ? I would have to check back to see serial number the same

  5. #5
    Join Date
    Feb 2012
    Posts
    561

    Default Service Manual Dynasty 350

    http://www.millerwelds.com/om/o216869k_mil.pdf
    Try this link
    Kevin

  6. #6
    Join Date
    Feb 2013
    Posts
    27

    Default

    Thanks Kevin. I already have the owners manual. I'm looking for the document a technician would use for troubleshooting. Something with pin voltages and a flow chart I can follow.

    I will reset the unit as a first step then. Is the owners manual method sufficient or is there a deeper reset sequence? From the owners manual "To reset the active memory, polarity, and process to original factory set- tings, lockout feature must be off (see Section 6-9). Turn power on and then press and hold the Pro- cess, Output, and Gas/DIG switch pads before the machine name clears the meters."

    Yes I ebayed this.

  7. #7
    Join Date
    Aug 2008
    Posts
    113

    Default Service Manual Dynasty 350

    Keep us posted I looked at it but would not budge on price so passed but would love to know what's going on with it and if u find a tech manual I would love to face one for later Down the road.
    How many hours and arc starts are on the machine ?

  8. #8
    Join Date
    Aug 2010
    Location
    Los Angeles
    Posts
    1,168

    Default

    Quote Originally Posted by wumpscut223 View Post
    Thanks Kevin. I already have the owners manual. I'm looking for the document a technician would use for troubleshooting. Something with pin voltages and a flow chart I can follow.

    I will reset the unit as a first step then. Is the owners manual method sufficient or is there a deeper reset sequence? From the owners manual "To reset the active memory, polarity, and process to original factory set- tings, lockout feature must be off (see Section 6-9). Turn power on and then press and hold the Pro- cess, Output, and Gas/DIG switch pads before the machine name clears the meters."

    Yes I ebayed this.
    Yes, the owner manual method.
    Nothing welded, Nothing gained

    Miller Dynasty700DX
    3 ea. Miller Dynasty350DX
    Miller Dynasty200DX
    ThermalArc 400 GTSW
    MillerMatic350P
    MillerMatic200 with spoolgun
    MKCobraMig260
    Lincoln SP-170T
    Linde UCC305 (sold 2011)
    Hypertherm 1250
    Hypertherm 800
    PlasmaCam CNC cutter
    Fadal Toolroom CNC Mill
    SiberHegner CNC Mill
    2 ea. Bridgeport
    LeBlond 15" Lathe
    Haberle 18" Cold Saw
    Doringer 14" Cold Saw
    6 foot x 12 foot Mojave granite

  9. #9
    Join Date
    Aug 2008
    Posts
    113

    Default

    Any luck yet ?

  10. #10
    Join Date
    Feb 2013
    Posts
    27

    Default

    Not yet. I'm out of town for a few days for work. I will report back as soon as I get a chance to try it out. I'll do the reset and check hours etc and post results. Thanks for the help guys.

    Does anyone know if the HF cards can be swapped from a newer unit as an "upgrade" to the board design? I noticed the part numbers are different. I think mine has points and the newer ones do not? The newer version card is about %25 percent of the price too

    My SN references these part numbers PC7 . .
    233 144 . . CIRCUIT CARD ASSY, HF (CE ROHS)
    189 786 . . . . CONTACT, SPARK GAP
    196 455 . . . . POINT, SPARK GAP

    The next SN series references this part number
    PC7 . . 235 476 . . CIRCUIT CARD ASSY,
    Last edited by wumpscut223; 02-10-2013 at 07:59 PM.

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