Question about Miller 903777012 SPECTRUM 2050 PLASMA CUTTER

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How much does a circuit board cost for a miller spectrum 2050 plasma cutter

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Depend the circuit boar but is be twin 500 and 700 usd

Posted on Feb 08, 2011

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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...


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.

Jul 30, 2010 | Miller 903777012 SPECTRUM 2050 PLASMA...

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Plasma cutter no cutting


the tech is probably pretty close to the cost of board,but you may have moisture in air that still wont take out the p.c..you have a warrenty on the unit,go to your local welding store and request a new one if refussed tell them you want to talk to the miller salesman which they should have no problem to set up.if not call miller direct in appleton wisc.they are good people.

Apr 07, 2010 | Miller Spectrum 375 X Treme Plasma Cutter...

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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...

1 Answer

How hard is it to change out the main circuit board on a spectrum 375 plasma cutter? What is the cost of the board?


The replacement of a board is no TOO hard, just DRAW a Diagram of ALL connections when you take the "Old" one out. NEVER work on the machine live Duh, also always wait a bit to allow capacitors to discharge, or use a shorting stick, if in a hurry. Anyhow, make sure you keep all fixtures together note down all connections and label them with little stickers, With any other information on the stickers as need be. I always do this as one never remembers whats what after a bit, anyway. Just be methodical, and you will prevail.

Feb 24, 2010 | Miller Spectrum 375 Cutmate Plasma Cutter...

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It runs but when you press tha trigger theres no


go to miller.com they have downloads for most everything they make. it sounds like you might have a ground problem or a bad connection in the tip

Jan 24, 2010 | Miller 903777012 SPECTRUM 2050 PLASMA...

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Power light blinking fast and voltage is fluctuating on load side of system and no power to handle


The machines that I have seen do that need the main circuit control card assembly. It is not a cheap circuit board either.

Jul 15, 2009 | Miller 903777012 SPECTRUM 2050 PLASMA...

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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...

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Miller 3080 plasma ,won't fire


check groun dconnection on workpiece and where connected to machine>> check reset switch.>
There is a screw in fuse on the back make shure you unplug the machine befor removing any fuse or working on any electrical problem.>>OUCH!

Jan 14, 2009 | Miller 903777012 SPECTRUM 2050 PLASMA...

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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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