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Plazma cutter/no arc

Thermal dynamics cutmaster 50
no pilot arc,,arc at gap on circuit board. torch works on another machine.
has high voltage

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The Cutmaster 50 used two different CD "Capacitor Discharge" Boards. The only ones I have seen a lot of issues with were the smaller ones that are 3.5" X 4"

I have worked on several of the them over the last few months. Even though you might see a spark at the spark gap on the board it might not be sufficient to create a pilot arc.

If your air pressure and so forth are correct your issue is most likely the two white capacitors on the CD board.

Posted on Nov 07, 2009

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Check pilot/output board

Posted on Sep 18, 2009


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