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  1. inillinois2

    Reactor in a portable Miller Big 40 welder?

    Excuse me for the name mix-up, bobcat. Is brand new and right out of the box. haven't really even looked at it...........thanx for your input tho.
  2. inillinois2

    Reactor in a portable Miller Big 40 welder?

    Am leavin the welder as is with one lead of coil unhooked. Usage is pry only about 20 hrs a year and have brand new Miller Bearcat 300 to use plus 3 other portable (propane) welders. Thank you all for your help on this matter, maybe look u up when the TMC 150 Thermatool) goes haywire, but can...
  3. inillinois2

    Reactor in a portable Miller Big 40 welder?

    Got it ito work I had an hour today and i did get it to work. I pulled the diodes out and checked, they appeared to read good, all were very close in reading. I scoped the output dc and had minimal ac on the line. The fine current adjust was checked with a fluke and also appears to be good, a...
  4. inillinois2

    Reactor in a portable Miller Big 40 welder?

    Load Bank....750 http://www.millerwelds.com/pdf/spec_sheets/AY6-1.pdf
  5. inillinois2

    Reactor in a portable Miller Big 40 welder?

    I really have not yet gotten a chance to work on this but did turn welder on myself today. I am confident the reactor is not the problem as i did a visual and i sure did not smell coils burnt. What is going on is that if i have the welder turned all the way down i can still strike an arc. I...
  6. inillinois2

    Reactor in a portable Miller Big 40 welder?

    Schematic http://www.millerwelds.com/om/o450n_mil.pdf
  7. inillinois2

    Reactor in a portable Miller Big 40 welder?

    I am looking for some info on a "reactor" that is in a potrtable welder. This reactor is basically a transformer, I believe, and the welding current is controlled by the windings. I would just like to confirm that this is my problem. The welder runs fine except for the fact that the weld power...
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