110 Volt Miller Wire Welder Problem


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Old 04-11-13, 02:18 PM
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110 Volt Miller Wire Welder Problem

My Miller Wire Welder has a problem now. When I press the trigger feed the wire goes out wide open even when adjusted at slowest setting???? What do I check and what tool (VOM) or ?? do I use to test this problem. And what value am I looking for in the switch or the feed adjustment "Pot" ( I guess)??
Thanks
Louis
 
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Old 04-11-13, 04:22 PM
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I think a call to Miller or one of their service centers would be your best bet. It may not be a simple switch or potentiometer issue.
 
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Old 04-11-13, 06:24 PM
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Money is tight right now, I can't afford to send it in for a estimate.. I was hopeing someone has a small Miller that has had this problem. I called the Dallas shop and they would not discuss what to try to check, or give me any info on what the trigger and the feed "Pot" should check at. They wanted me to drop it off and pay a fee, I understand it could be several different problems and they are in the repair bussiness. My old Lincoln did this many years ago and I had a spare line and trigger and it fixed this same problem. Maybe I wil get lucky and it's the same or something I can replace with a new part.
 
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Old 04-11-13, 06:55 PM
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The switch is just on or off......so if you are getting wire feed the switch is ok.

The potentiometer (pot) should have its value marked on it. A likely marking you could see would be 1k (1000 ohms) or 10K (10,000 ohms). The majority of pots have their value stamped on them.

The pot is on the unit itself......not in the handle.....correct ?

Ok... that aside.... I doubt the control is bad unless it was physically damaged. The pot just sets the value for a variable speed control board inside. The variable speed board may be replaceable.

Leave a model number and I'll scout up a schematic.
 
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Old 04-11-13, 07:24 PM
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Millermatic 130 110 volt.
 
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Old 04-20-13, 07:07 PM
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PJmax the the "pot" is not in the handle. I have been ill and have not had the time to open up the box yet. Did you locate a wiring diagram?
Thanks
Louis
 
 

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