I have a millermatic 200 (black face). Built in 1984 or so. 220v 1 ph power....My problem is when the trigger is pulled, the wire will not feed. I can hear the solinoids clicking but no wire will feed. the feed motor will jump a bit but will not continue to feed. put a volt meter on the wires leading to the motor and it only powers for a second (if that) and then no power. I just replaced the circut board so I know that its not that. There are a few solinoids on this machine could it be one of these?? what about the round blue things ( im not sure what they are). I tapped on one of them and the wire motor rotated, but then I tapped on the solinoid next to that and that also made the wire motor rotate. Im 90% sure my problem is I am not getting continuous power to the wire feed motor. I was told it was most likely the circut board so I sent it out. When they called and said it was bad I figured OK thats the problem. Obviously it was not the only problem, but at least now I know the circut board is good....I bought this welder new in 1984 or 85 and it is used at my home so the usage is mild..
Sounds like a loose or bad connection, resolder the soldered joint, these do hide hidden problems. The "blue things" might be capacitors, be ever so carefull if you remove them or you will get an awfull shock, an electrician will have the equipment to test these out, play it safe,
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