Question about Miller 903777012 SPECTRUM 2050 PLASMA CUTTER

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Spectrum 2050 plasma cutter . Cutter blows air and stops when trigger is pulled no pilot arc or any cutting when trig is released air flows again and stop after 10 sec new tips was working the day before just once free advice

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Check compressed air pressure is in limits otherwise unit will cut out. Try adjusting the pressure up. also make sure the supply pressure is correct as it may not be your plasma cutter at fault.

Posted on Aug 02, 2010

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Spectrum thunder plasma cutter will not cut steady, keeps stopping and have to pull trigger to cut


Check the contactor contacts for pitting. if severly pitted, replace contactor. If a death grip on the switch makes it work better then a light touch- replace the trigger switch.

Aug 17, 2012 | Miller Spectrum 375 Cutmate Plasma Cutter...

1 Answer

It runs when u press the trigger theres no fire or air comes out


Is the compressed air pressure in the limits for the unit to work. try turning the pressure up.

Aug 01, 2010 | Miller 903777012 SPECTRUM 2050 PLASMA...

1 Answer

Spectrum 2050 plasma cutter will not arc


Possible failure of the trigger switch and or the cable back to the unit. Use an ophmmeter to check that the trigger and cable are good,

Then with the ohmmeter check the continuityu of the cable to the electrodes,

Connectors are always suspect.

These are starting ponts to check.

Mar 04, 2010 | Miller 903777012 SPECTRUM 2050 PLASMA...

2 Answers

Plasma cutter started cutting at an angle even when held perfectly perpendicular. New consumables were put on, same amperage, same air pressure. I'm stumped!


did you put all new consumables in ,sounds like there is still old one there.make sure nozzel is put back together right.I have worked on welders and plasmas for years,the torch head is very tempermental.

Mar 01, 2009 | Miller 903777012 SPECTRUM 2050 PLASMA...

1 Answer

Miller 2050 that will not spark.


This is relative to 3 causes , contol board , pwm board or torch

Feb 28, 2009 | Miller 903777012 SPECTRUM 2050 PLASMA...

1 Answer

Plasma cutter


in order to cut the thicker steel just boost the air pressure this will allow you to thourghly blow through the steel. just remember not to turn it up too much. this should do the trick. please rate

Sep 15, 2008 | Miller 903777012 SPECTRUM 2050 PLASMA...

1 Answer

Plasma cutters problem


Depending upon the design of the torch (e.g., orifice diameter), electrode design, gas type and velocities, and the current levels, several variations of the plasma process are achievable, including: * Plasma Arc Welding (PAW) * Plasma Arc Cutting (PAC) * Plasma Arc Gouging * Plasma Arc Surfacing * Plasma Arc Spraying

Aug 27, 2008 | Miller 903777012 SPECTRUM 2050 PLASMA...

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