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Thread: Sa200 wont weld

  1. #1
    Join Date
    Dec 2020
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    Sa200 wont weld

    Hello all,
    Im new here, I have a mid-late 70s SA200. The plug on my rheostat shorted out against the box causing my exciter coils to burn up. I replaced them, got her all wired up and it wont excite. No aux power, wont turn a grinder at all and only sparkles when I try to strike an arc. Ive tried to flash it and still nothing. However, with a multimeter across the brush terminals I get 125. When I manually flip it to high idle its still the same result When I manually flip it to high idle its still the same result, that rules out the reed switch & PC board right? I have been using this machine without a single issue for about 5 years until last week. I spoke to a professional on the phone about my wiring to the plug on the face of the machine and the rheostat/remote is a little goofy but before I start rewiring what could it be?

  2. #2
    Join Date
    Mar 2010
    Location
    Ceres, California
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    Re: Sa200 wont weld

    You are going to need the correct wiring diagram for your welder. find the code and serial number. You can try calling Lincoln and see if they will send you one. If they can find it. If you have 125 vdc at the brushes and nothing at the front panel plug. you have a open wire or connection.
    Look on the barrel it the code might be stamped there.

  3. #3
    Join Date
    Jan 2021
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    15
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    Re: Sa200 wont weld

    Did you remove the one brush from the commutator? Are you doing this with your machine stopped and a 12 volt battery, positive to the right hand brush holder? May need to flash again. Maybe 10 seconds this time.

  4. #4
    Join Date
    Aug 2014
    Location
    Ontonagon
    Posts
    45
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    Re: Sa200 wont weld

    Another thing to try - reverse the new exciter wires

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