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  1. #1
    Join Date
    Jan 2007
    Posts
    16

    Default Miller Big Blue 300P

    Hi, Have 2006 BB300P with Cat/Perkins. Suddenly, no arc or power output. Engine runs fine. Help code 22. Definitely not overheating. Follow troubleshooting info in operator manual. Pull PC3 voltage regulator module. Burned small component on board. Buy new board #214770 and new exciter brushes. Everything working again. Open circuit voltage at 40v indicated on read-out. Seems like it was higher before. Am I looking for a problem when there is none? Everything seems normal to me. Is the PC3 board updated from the original, and some new OSHA voltage limitation BS incorporated into the electronics? The 115 / 220 AC is correct by my volt meter Just curious. Don't mean to ramble on. Appreciate any input.
    Thanks ,
    Lake

  2. #2
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,910

    Default

    Yep, 40 - 41 volts is completely normal for this unit

  3. #3
    Join Date
    Jan 2007
    Posts
    16

    Default

    Cruizer,
    Thank you very much! I figured you would know if anyone would.
    Lake

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