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Lincoln Wire-Matic 250 welder

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11-21-2020 15:38:14

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I've had this welder for several years, and never had any issues with it, until today. Was welding some 1/4" steel and all is well. Went to strike an arc and had no arc or wire feed, and the power light was off. Turned the power off and on and I could start welding again. This happened several times and finally it would not restart. Checked the easy stuff and couldn't find any issues. There's no evidence of smoke escaping from any component and no funny smells. I do have power through the switch, but don't think I'm getting any power to the boards. Anyone have any ideas/suggestions about what I should check?



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11-22-2020 08:20:09

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 Re: Lincoln Wire-Matic 250 welder in reply to deeretails, 11-21-2020 15:38:14  
I don't know any thing about your welder but my 110 Century wire feed acted similar. What I found was the circuit board was soldered to the wire control switch in three places, two of the three spots were cracked. I bridged the three soldered connections with a couple inches of wire and hung the circuit board with a zip tie to stop any vibration.

The little welder is still cheap junk but at least it works again.

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11-22-2020 03:26:56

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 Re: Lincoln Wire-Matic 250 welder in reply to deeretails, 11-21-2020 15:38:14  
It sounds like the thermal overload protection was tripping. I'll bet if you try it now, it will work just fine.

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11-21-2020 15:49:38

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 Re: Lincoln Wire-Matic 250 welder in reply to deeretails, 11-21-2020 15:38:14  
This may help, it describes testing the boards, and other procedures. Jim

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