I am new to this forum and I need some advice. We have a plasma gouger thermo dynamics. We are having problems and are at our wits end. I am needing to find out if you have any ideas of what direction to take, wether we should get this one fixed or just buy a new one. This is obsolete and very expensive to replace. The problem we are having is that the tip saver board has two 1n4007 diodes that keep blowing and we just can't find anything shorted that would cause this to happen. I would appreciate any advise you could give me and thanks very much for your help!!!!