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Mac tools ultramig 200 buttons wont work but has power

I have a mig / gas micro controlled welder from Mac tools. It has power to the transformer and to the panel on the front of the welder but the buttons wont work. Is there a fuse or relay that is bad ? I got it from a friend that used it maybe 20 times and took exelent care of it.

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More than likely you will need a PCB, and they are expensive. No fuse that I am aware of. Check the control transformer for voltage.

Posted on May 01, 2015

  • cutnshoot196 May 15, 2015

    Dont the pcb usually show some sign of burnt/blown components on them? I know that you cant see the problem if one of the IC chips are bad. Is there anyway to verify its the pcb that you might know of . I also keep hearing that the diode on the transformer witll cause this problem. I am getting power thru both transformers and up to the pcb that works the push sensor buttons on the front panel.



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