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Anyone Have a Miller 375 Service / Tech Manual... Board Schematic??

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  • Anyone Have a Miller 375 Service / Tech Manual... Board Schematic??

    Anyone have a Service / Tech. Manual or Board Schematic For a Miller 375 X-TREME Plasma? Serial Number Range: LG130001P through LG190233P

    Need to Get the Value of R123 a Ceramic Power Resistor.

    Will be digging further but just removed the parts that had a visible catastrophic failure / damage

    Will Still need to find the failure that caused the Resistor to Go Nuclear!

    So Far My Parts List
    2 X 1500UF 250V Caps
    1 X AVX FFB16J0395K 3.9uf 525v Capacitor
    1 X Unknown Ceramic Power Resistor

    Pulled the Heatsinks and Don't Look Like any of the Transistors Melted Down..






    Last edited by Contract_Pilot; 07-01-2018, 03:20 PM.
    My Shop Tools:
    Tormach PCNC 1100 CNC Mill
    12X36 Lathe CNC
    Miller Diversion 180 Tig
    Miller 211 Non-Inverter Mig
    Miller LMSW-52T Spot
    Quincy QT54 Compressor
    SkatBlast 960DLX
    I Support The Right To Repair https://repair.org/stand-up/
    Personal Blog: Http://www.stevenrhine.com

  • #2
    No, I don't, but if you're making AK-47s, you'll get along just fine around here! I've repaired a couple receivers myself. among other gun projects.

    Comment


    • #3
      Originally posted by MAC702 View Post
      No, I don't, but if you're making AK-47s, you'll get along just fine around here! I've repaired a couple receivers myself. among other gun projects.
      Yea, I Like Building AK's Here is My Gun Show Table.

      My Shop Tools:
      Tormach PCNC 1100 CNC Mill
      12X36 Lathe CNC
      Miller Diversion 180 Tig
      Miller 211 Non-Inverter Mig
      Miller LMSW-52T Spot
      Quincy QT54 Compressor
      SkatBlast 960DLX
      I Support The Right To Repair https://repair.org/stand-up/
      Personal Blog: Http://www.stevenrhine.com

      Comment


      • #4
        Were you set up at the Red Oktober AK Nationals in St. George, UT? I shot the inaugural one two seasons ago when I was still very active in competitions. I had many compliments on shooting it with an original Sile, NY, Norinco.

        Miller related: I had the predecessor 375 Spectrum Cutmaster before they came out with the X-TREME model.

        One of the Miller guys should be able to tell you the part you need tomorrow (Monday) morning.
        Last edited by MAC702; 07-01-2018, 07:30 PM.

        Comment


        • #5
          I set up Portland Oregon Area Fall, Winter & Spring Time..

          My Shop Tools:
          Tormach PCNC 1100 CNC Mill
          12X36 Lathe CNC
          Miller Diversion 180 Tig
          Miller 211 Non-Inverter Mig
          Miller LMSW-52T Spot
          Quincy QT54 Compressor
          SkatBlast 960DLX
          I Support The Right To Repair https://repair.org/stand-up/
          Personal Blog: Http://www.stevenrhine.com

          Comment


          • #6
            Here Are My 3 Machines.. This Plasma Will Make a Welcome Addition..

            rs.jpg


            211... The K Bottle Gonna Break The Harbor Freight Cart hahaha...


            My Mini PCB Rework Bench.

            My Shop Tools:
            Tormach PCNC 1100 CNC Mill
            12X36 Lathe CNC
            Miller Diversion 180 Tig
            Miller 211 Non-Inverter Mig
            Miller LMSW-52T Spot
            Quincy QT54 Compressor
            SkatBlast 960DLX
            I Support The Right To Repair https://repair.org/stand-up/
            Personal Blog: Http://www.stevenrhine.com

            Comment


            • #7
              Need to remove the Plastic Cover From the Board So Removing & Checking The Transistors..

              Waiting On Larger Nozzles for My Desoldring Gun.. Wish I had a Hakko Stocking dealer here.. Seems Like Motion Industries has Purchased all the cool stores and nixed all the good stuff!

              All the IGBT's Seemed to Check Out With Multi Meter.

              Negative Lead on Collector Posotive On Emitter Open.. Touch Gate With Posotive Lead Will Tone ON Emitter/Collector, Short Emitter and Gate = Collector and Emitter is Open Again.



              Data Sheets For IGBT's
              X 4 https://www.mouser.com/datasheet/2/1...pd-1225850.pdf
              X 1 https://www.mouser.com/datasheet/2/1...bf-1227630.pdf
              X 2 https://www.mouser.com/datasheet/2/1...d1-1225219.pdf

              That Lacquer type Coating on these board becomes a mess.

              The 2 Transistors I Marked 10 and 11 are DSP45-12A Rectifiers That is Were The Traces Go Will Know More When I Remove them all and get that plastic Cover Off.

              Should have my 1.3mm and 1.6mm Nozzles By Friday. Found the solder wick but with that coating PITA..



              So Far Only Transistor I Cannot Identify Miller Part Number.. 5 Pins..



              My Other Gun's


              So Anyone With A Board Schematic Would be Much Appreciated. Otherwise I Will Prob Disassemble this Entire Board hahahah!
              Last edited by Contract_Pilot; 07-03-2018, 07:19 PM.
              My Shop Tools:
              Tormach PCNC 1100 CNC Mill
              12X36 Lathe CNC
              Miller Diversion 180 Tig
              Miller 211 Non-Inverter Mig
              Miller LMSW-52T Spot
              Quincy QT54 Compressor
              SkatBlast 960DLX
              I Support The Right To Repair https://repair.org/stand-up/
              Personal Blog: Http://www.stevenrhine.com

              Comment


              • #8
                I got the board schematic.. it is on my personal blog.. Now..

                Whats Under The Hood.. So far No Bad Parts.. Except the Relay and Resistor.

                So All Burnt Parts, Replacements On The Way Prob Tuesday/Wednesday. Including that HX50-P Prob Still Good But it is Burnt..



                To get the Hood Off Yep.. Lots of Parts Removed..



                My Shop Tools:
                Tormach PCNC 1100 CNC Mill
                12X36 Lathe CNC
                Miller Diversion 180 Tig
                Miller 211 Non-Inverter Mig
                Miller LMSW-52T Spot
                Quincy QT54 Compressor
                SkatBlast 960DLX
                I Support The Right To Repair https://repair.org/stand-up/
                Personal Blog: Http://www.stevenrhine.com

                Comment


                • #9
                  This is a lot more fun on my end than it is on yours.

                  Comment


                  • #10
                    I chuckled when I saw your pics of that PC board. Looks a whole bunch like the one in my passport plus! I'm at about the same stage of disassembly too! I'm gonna start a thread about it as well. I have the tech manual for it so far but haven't got the board schematics yet. So far I've found a bad zener diode for the power supply to the atmega microcontroller.

                    Comment


                    • #11
                      I took some pics of my passport plus board for comparison. No idea if this will help but I bet there are only so many parts bins to draw from at Miller. No warranty expressed or implied, not suitable for use in pollution controlled motor vehicles, I make no claims of safety or suitability for any purpose, for display only. Ive never been bit by high voltage high current DC, And I dont want you to be either.

                      Comment


                      • #12
                        All the boards look about the same layout. Can you look at a part for me? I have to hand it to miller releasing tech data.. A+ to them.. But they are moving away from technical manuals is what I as told
                        Last edited by Contract_Pilot; 07-16-2018, 10:54 PM.
                        My Shop Tools:
                        Tormach PCNC 1100 CNC Mill
                        12X36 Lathe CNC
                        Miller Diversion 180 Tig
                        Miller 211 Non-Inverter Mig
                        Miller LMSW-52T Spot
                        Quincy QT54 Compressor
                        SkatBlast 960DLX
                        I Support The Right To Repair https://repair.org/stand-up/
                        Personal Blog: Http://www.stevenrhine.com

                        Comment


                        • #13
                          yeah tell me what ya need I will do what I can. A shame they don't want to publish all this info any more. I know hobbyists are a very small part of their business, but what does it cost to make available data any more? If I cant fix a broken machine I get for cheap, Im just gonna buy a cheap machine. Industry will do the same eventually. These private equity firms that buy profitable tool companies are killing them. I want to buy American, but I also want good value for Dollar, and buying a $1100 dollar board for a $2000 dollar obsolete light duty machine is not a good value. Plus I'm just cheap and ornery.

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