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Miller syncrowave 300 woes

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  • Miller syncrowave 300 woes

    I picked up 3 of these units not too long ago. I planned on keeping one for myself. Anyways I have one unit that is not giving any output voltage... Ive set it up for stick welding and cannot get it to run.

    The unit powers on but makes some sort of buzzer noise (maybe a contactor issue?) for about 3 seconds then the noise stops. the fan comes on and the power light comes on.... anyways I made some videos so someone may recognize the issue!?

    http://s530.beta.photobucket.com/use...01305.mp4.html

    http://s530.beta.photobucket.com/use...65822.mp4.html

    this is one working correctly with all the similar settings and leads anyways its 1/16" 7014 rod lol...

    http://s530.beta.photobucket.com/use...65822.mp4.html

  • #2
    I would sure like to see and hear your machine with the AC/DC switch in the AC position...

    Comment


    • #3
      Originally posted by Dipsomaniac View Post
      I would sure like to see and hear your machine with the AC/DC switch in the AC position...
      It did the same thing upon startup in the ac position.

      Comment


      • #4
        If its a buzz its just a contactor. Usually dust in the shunts. Just take the coil part of it apart and clean it.

        Comment


        • #5
          Originally posted by cruizer View Post
          If its a buzz its just a contactor. Usually dust in the shunts. Just take the coil part of it apart and clean it.
          could that be the reason im not getting any voltage output? also would that explain why its a loud buzz then after about 3 seconds it stops?
          Last edited by user name:; 11-27-2012, 11:12 AM.

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          • #6
            ? anyone

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            • #7
              Didn't I already answer your question, how many varifications do you need.....

              Comment


              • #8
                Originally posted by cruizer View Post
                Didn't I already answer your question, how many varifications do you need.....
                I put a video up... why would you ask me "if its just a buzz"? I am not a sound technician so I have no idea how to describe sounds. did you see the video I linked, if so is that just a buzz that would cease after a few seconds and still leave me with a dead welder? for all i know it could be a gobbledy gook humming sound. Im not quite sure what the "coil part" is either... there is a ton of coil parts in this massive welder.

                Comment


                • #9
                  Originally posted by user name
                  ... Im not quite sure what the "coil part" is either... there is a ton of coil parts in this massive welder.
                  I think if you locate Relays CR1 and CR2 you will find one of them (more than likely CR1) is your "buzzer"...


                  Take a look in the Resource section on this site for your machine manual and wiring schematics and you will also find the location of those two relays in the parts section of the manual. They should be very close to one another.

                  Good luck!
                  Last edited by Dipsomaniac; 11-27-2012, 05:25 PM.

                  Comment


                  • #10
                    Originally posted by user name: View Post
                    I put a video up... why would you ask me "if its just a buzz"? I am not a sound technician so I have no idea how to describe sounds. did you see the video I linked, if so is that just a buzz that would cease after a few seconds and still leave me with a dead welder? for all i know it could be a gobbledy gook humming sound. Im not quite sure what the "coil part" is either... there is a ton of coil parts in this massive welder.
                    Well, your vids never worked for me anyways. And since no tech is there to look at it, all we cn do is throw out suggestions. You want it fixed take it to a repair center. Could be a relay, could be a failed contactor. If you have zero electrical knowledge, us suggesting things is is little useless. However if you know someone handy in such things. Have him post here then we can easily figure it out.

                    Comment


                    • #11
                      Originally posted by Dipsomaniac View Post
                      I think if you locate Relays CR1 and CR2 you will find one of them (more than likely CR1) is your "buzzer"...


                      Take a look in the Resource section on this site for your machine manual and wiring schematics and you will also find the location of those two relays in the parts section of the manual. They should be very close to one another.

                      Good luck!


                      Is this it? sorry about my horrid paint skills, ha.

                      Originally posted by cruizer View Post
                      Well, your vids never worked for me anyways. And since no tech is there to look at it, all we cn do is throw out suggestions. You want it fixed take it to a repair center. Could be a relay, could be a failed contactor. If you have zero electrical knowledge, us suggesting things is is little useless. However if you know someone handy in such things. Have him post here then we can easily figure it out.
                      I'll get it figured out I think. I do appreciate your help though buddy.
                      Last edited by user name:; 11-28-2012, 08:22 AM.

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                      • #12
                        Originally posted by user name

                        Is this it? sorry about my horrid paint skills, ha.
                        That does look like CR-1...

                        Comment


                        • #13
                          so should I just blast this out with compressed air? I cant find directions in the tech manual on how to test this relay? How can I test it to find out if its bad?

                          Comment


                          • #14
                            Originally posted by user name: View Post
                            so should I just blast this out with compressed air? I cant find directions in the tech manual on how to test this relay? How can I test it to find out if its bad?
                            Well, I would take the relay out, disassemble, refurbish the contacts and of course blow all foreign material out of this unit, IF it is the source of the "buzzing".

                            Comment


                            • #15
                              Originally posted by Dipsomaniac View Post
                              Well, I would take the relay out, disassemble, refurbish the contacts and of course blow all foreign material out of this unit, IF it is the source of the "buzzing".
                              thank you sir, I imagine I would want to put my multimeter on it to make sure its getting 24vdc as well right?

                              Comment

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