Question about Miller DYNASTY 350 TIG WELDER w/TIG TORCH 951074

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I have a merkle tig 200 that has ceased to function properly. i used it on Friday with no dramas but cam to use it again yesterday and it refuses to arc up. it will arc at max power to initialize but then continuously expels gas without arcing and it unresponsive to controls. when i run a test on it it cycles through 3 stages then freezes. any solutions or answers to my dilemma are appreciated.

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Posted on Jan 02, 2017

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SOURCE: LINDE HDA 300 TIG WELDER HIGH FREQ. PROBLEMS

The contact should have a gap .008 .

Posted on Mar 21, 2009

keemo68
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SOURCE: miller Syncrowave 250 / no tig arc start

seems that you have a ground issue. make sure the ground clap is on barte metela and secured tight. make sure your tungsten electrod is about 1/8 of an inch form the edge of the cone. you will find that you will get a faster arc this way.

Posted on Apr 19, 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

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SOURCE: Tig welder wont strike up arc, power to welder ok,

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Posted on Mar 27, 2010

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Typically, you would want to use AC below about 250 amps. In this case (to keep it simple), use AC, adjust your balance to about 4, use an 1/8" pure tungsten, pure argon at about 20CFh, and set the panel at 170amps to get things started. For general purpose, use 4043 filler.

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