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Trailblazer 301D - no exciter voltage

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  • cruizer
    replied
    Had a few odd problems where PC1 tested fine , however the input to the display board was blown. Simple fix though

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  • cruizer
    replied
    Do you have digital display when running?

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  • hardhatsrri@gmail.com
    replied
    Fuse on the firewall is blowing talk to the Miller rep he said that I needed to check the Ohms on the Armature which is checked out fine he said that I need to replace pc1 so I bought a new board still having the same problems any suggestions

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  • AJMauch
    replied
    Traliblazer 301 no exciter voltage

    Took a while for me to get back on this, but the checks on RC15-2 to RC15-8 are 12 volts and on pins 1 to 8 are zero volts. The serial number is LE066615 so from what is stated below, it sounds like this is correct. Do you have any other ideas?

    Thanks

    Originally posted by cruizer View Post
    lets check to make sure you've got battery voltage comming in to run the darn thing first so test from RC15-2 to RC15-8

    So depending on your serial#, you should have say -13 VDC at RC15-1 to RC15-8 with a serial # less than LC241176 (Pos lead on RC15-1)

    Above that serial #, you should get zero volts

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  • cruizer
    replied
    May be as simple as a corroded R5 connector plug from the engine to the power board and front switch.. It happens....

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  • cruizer
    replied
    lets check to make sure you've got battery voltage comming in to run the darn thing first so test from RC15-2 to RC15-8

    So depending on your serial#, you should have say -13 VDC at RC15-1 to RC15-8 with a serial # less than LC241176 (Pos lead on RC15-1)

    Above that serial #, you should get zero volts
    Last edited by cruizer; 09-07-2010, 04:27 PM.

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  • AJMauch
    replied
    Thanks for the reply. F1 is fine. SR2 was replaced all ready.But would this affect voltage on wires 131 to 134 going to the rings? I do not detect any voltage coming from the power board on these pins.



    Originally posted by cruizer View Post
    Check fuse f1 and bridge SR2. If F1 is blown then SR2 has to be replaced

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  • AJMauch
    replied
    Thanks for the reply. F1 is fine. SR2 was replaced all ready.But would this affect voltage on wires 131 to 134 going to the rings? I do not detect any voltage coming from the power board on these pins.

    Leave a comment:


  • cruizer
    replied
    Check fuse f1 and bridge SR2. If F1 is blown then SR2 has to be replaced

    Leave a comment:


  • AJMauch
    started a topic Trailblazer 301D - no exciter voltage

    Trailblazer 301D - no exciter voltage

    Hi-
    We have a Trailblazer 301D that is not putting out any voltage for welding or AC. Voltage checks shows that there is no exciter voltage coming from the power board. The power board is getting DC voltage however and both the power board and control boards work when swapped with an identical machine. Does anyone have any idea what else I can check?
    Thanks, Austin
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