This is an older welder that was given to me (Hobart Model RC-256, Spec 5269D-1, Serial 79Ws13165). It fires up, but blows the main fuse when the trigger is pulled. Looks like there may be some bad parts in the 404209A board the control wires go to. Could this be the source of the problem? Is this board or the parts to rebuild it available? Any help is greatly appreciated.
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