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Miller econotig repair

Miller econotig. output is weak. both for tig & stick. not enough juice to weld. allready cleaned contacts. didn't help. any ideas?

Posted by Anonymous on

6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

  • 3 Answers

SOURCE: bad tig weld job

Wow you have a lot of variables here. Let's go over some of them.1.AC current 2.100%argon shield gas 3.Check your Tungsten, it must be the recommended 1or 2% and the right size, clean and the tip rounded by meting 4. High freq. turned to continous-not just "START"
5. CLEAN,CLEAN,CLEAN your Alum. with a S.S. brush that has touched NOTHING else in in it's life!
Start here and GOOD luck

Posted on Dec 28, 2008

CarlGehrke
  • 169 Answers

SOURCE: miller syncrowave 200 makes buzzing noise from spark gaps.

Odd noises other than the normal sound of the spark gap working are often the result of dust and junk inside the case of your welder. That it also bogs down when it gets warmed up (fan comes on), also points to a need for some "annual maintenance" stuff being done.

Completely isolate the machine from the building power supply, pul the plug, open the circuit breaker, do whatever it is that makes the machine have no connection to any power.

Take off the covers with a 10mm or 3/8 inch socket (can't remember which)

Use a shop vac to **** out all of the dust and debris out of the machine. Low pressure (40 psi) air can sometimes be helpful to dislodge caked on dirt. Avoid any metal tools near the capacitor bank inside the welder.

Wipe off the fan blades.

Clean the spark gap electrodes by inserting and removing a matchbook cover, a business card, or a piece of white cardboard several times. Inspect the electrodes and adjust them according to the manual that came with the welder.

Check all of the power wiring connections for tightness by gently tugging on them. Look for signs of overheating on the power connections and on the internal connections to the welding terminals. Check the range switch for heating too.

With the cover still off, reconnect the power and turn the welder on. Look for obviously vibrating laminations on the main input transformer. If you see one buzzing back and forth, or if you notice lots of wear and tear on the varnish coating of the laminations, shut everything down and repair the loose laminations with some anti-fungal high voltage varnish.

Turn the welder off, disconnect the power, and put it all back together. Then turn the power back on and weld something, if htere is still a buzzing noise you'll need a Miller tech to solve the problem, you likely have a bad input transfirmer.

Regards,
Carl

Posted on Jan 26, 2009

  • 87 Answers

SOURCE: Hi, starts to weld fine after a few seconds hi

It sounds like you need to change out your SCR chip on your motherboard; Miller makes one that i have installed on all our 350xl's, I don't have the number on hand but i can get it for you tomorrow.

Posted on Oct 20, 2009

Testimonial: "appreciate the help."

co7196
  • 3433 Answers

SOURCE: Miller Syncrowave 200 wont strike arc for TIG

proper polarity?

Posted on Nov 12, 2009

  • 5603 Answers

SOURCE: miller 250 dx tig willnot

The inverter or control of it has failed. Unit will require servicing. If you are not electronically adept, this is NOT DIY. Do your best to check the control pedal wiring, especially connectors and the cord near connectors.

Posted on Jun 25, 2011

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    Poor weld quality- porosity. non directional arc, dcen.


    Tig need to very clean prior to weld.Stainless steel wire brush.or dics sand new disc. Argon Gas.
    Tungsten needs to be ground the write way. seen Miller.com they have free info for you.How to Tig.

    Feb 19, 2011 | Welding Tools

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