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  1. #11
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,470

    Default

    Whats the DC+ OCV now??

  2. #12
    Join Date
    Oct 2012
    Posts
    17

    Default

    DC+ voltage at 28.3v at run position OCV

  3. #13
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,470

    Default

    whats the AC output at the studs in dC+ mode. I'd say that your rectifier is pooched.

    Not usually a winding issue.

  4. #14
    Join Date
    Oct 2012
    Posts
    17

    Default

    The DC+ AC voltage is 11.8V at run speed.

    If it is the rectifier, any way to repair a rectifier without purchasing a new one from Miller?

  5. #15
    Join Date
    Oct 2012
    Posts
    17

    Default

    BTT

    Anybody know how to test the rectifier?

  6. #16
    Join Date
    Oct 2012
    Posts
    17

    Default

    Bump. Anybody have a test procedure for the rectifier?

  7. #17
    Join Date
    Oct 2012
    Posts
    17

    Default

    OK. Replaced rectifier with new rectifier from Miller. Still no weld output.

    Where do I start looking next?

  8. #18
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,470

    Default

    Tough one to online T-shoot, best take it into a qualified Miller repair center

  9. #19
    Join Date
    Oct 2012
    Posts
    17

    Default

    I know it is tough online, and I appreciate your help very much. I just like working on them to learn a little before giving up too fast. I switched the C1 cap from another machine, no change. Fuses good, C1 Cap is good, Rectifier good, AC output OK....I feel like I'm down to the Integrated rectifiers or the Reactor

    I want to check the integrated rectifiers SR2 and SR3. What should I be looking for and how do I test them?

  10. #20
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,470

    Default

    Best to us a diode test function on a meter. point ot point on the 4 terminals, will either be open (OL) or have a reading around 0.5Volts

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