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Miller Blue Star 2E - No Arc

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  • Miller Blue Star 2E - No Arc

    Good evening everyone. I'm hoping to get a little help on a problem with an old Blue Star 2E. Put on a new battery this weekend but I must not have tightened the positive cable enough. When I went to crank it, the cable sparked at the battery connection. I tightened it, cranked it, and went to strike an arc, but nothing. It just sparks a little but not enough to even stick the rod. Battery is brand new and fully charged. Idle doesn't rev up when trying to strike an arc. Any suggestions on where to start? Thanks to everyone in advance.

  • #2
    Serial# please....

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    • #3
      Blue star 2E - no arc

      Thanks for the reply cruizer. The SN on my machine is:
      JD677915

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      • #4
        It's usually diode D8 thats the culprit. didn't mention if its a ac/dc unit, however D8 is in both, just off SR1 in the wiring diagram, its an inline diode likely under some yellow sheathing

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        • #5
          Thank you for the help. Very much appreciated.

          Yes, it's an AC/DC unit. D8 diode. I've never broken into one of these machines but I do have the wiring diagram. I'm guessing the diodes can be ordered online most likely and a simple solder connection????

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          • #6
            3A 1000 volt. Yes soldered in. Long time since I've seen a 2E, but its in the wiring harness. Looks like wire #7 comming off the start switch between it and the control bridge SR1

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            • #7
              Not the D8 Diode

              Well, got in the new diodes. I bought 2 just to have a spare. Took out the old one, cleaned the connections, put in the new one, cranked it up, but same thing. Nothing but fine sparks. Not even enough to stick the rod.

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              • #8
                A diode is an electrical "check valve".

                Did you install it in the proper direction?

                The band on one end should go toward bridge rectifier SR1.
                Last edited by duaneb55; 07-29-2014, 09:11 PM.
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                • #9
                  Not trying to be smart But have you made sure it is in weld mode and not power. Reason I ask is because it happened to me .

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                  • #10
                    Yes to proper direction. The connections are in such a manner to make it idiot proof. Male / female connections. Can't install it backwards.

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                    • #11
                      Originally posted by josh birkhead welding View Post
                      Not trying to be smart But have you made sure it is in weld mode and not power. Reason I ask is because it happened to me .

                      Thanks for the tip. Yes I double checked. It's definitely in "Weld" mode.

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                      • #12
                        Stumped everyone

                        Originally posted by jrgrtx View Post
                        Good evening everyone. I'm hoping to get a little help on a problem with an old Blue Star 2E. Put on a new battery this weekend but I must not have tightened the positive cable enough. When I went to crank it, the cable sparked at the battery connection. I tightened it, cranked it, and went to strike an arc, but nothing. It just sparks a little but not enough to even stick the rod. Battery is brand new and fully charged. Idle doesn't rev up when trying to strike an arc. Any suggestions on where to start? Thanks to everyone in advance.

                        Well, looks like I stumped everyone. Ok. Next question. Anyone know of a good repair shop in the Dallas, Fort Worth, Waco areas?

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                        • #13
                          I don't see it written here, but do you have 120 auxillary power?

                          Say for a grinder

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                          • #14
                            Originally posted by cruizer View Post
                            I don't see it written here, but do you have 120 auxillary power?
                            Say for a grinder
                            There is a 118v outlet (can use while welding) along with the other normal 110 generator outlet.

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                            • #15
                              I know what the unit has,,,,,,,. what I want to know is if they work??

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