Question about Hobart Handler 140 Mig Welder
Could be a board but it is common for the diodes to overheat and burn out. These welders are only 20% duty cycle. If you do lots of continuous welding it will overheat. If you open the cover and follow the main lead you'll see the two large diodes . See if there are any burnt wires or melted insulation. You can order the diodes from hobart or from your local welding supply. You can test the diodes with an ohm meter. They should conduct in one direction, but not the other. Let us know what you find out!
Posted on Nov 06, 2010
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Posted on Jan 02, 2017
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