Question about Miller Spectrum 375 Cutmate Plasma Cutter 903891

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Miller Spectrum 375 problem

My plasma cutter just shut off and now nothing happens when I try to turn it on. It was only on for about 30 seconds when it quit and no cuts had been made so it was cold. Now when you flip the switch nothing at all happens. Its like its not even plugged in which it is and I checked the power source. Air was at 90psi so no issue there either.

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It sounds like you have a problem in the power supply input area. Make sure your voltage select switch is in the correct location. Unplug the unit and switch back and forth between the two positions to clean the contacts. Try again. If still bad check you terminal lug connections on the input lead wires. If still bad please answer these questions.

Does the power indicator come on at all? Does the fan start?

Posted on Nov 16, 2009

  • jefrey Otieno Nov 03, 2014

    i have the same problem av tried al the above even opened it up the machine .. there is a red led flashing on the power supply board but nothing happens

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