I have a speed controller for a welder that was missing 2 resistors. I know that it had 2; (7 watt 4.7 ohm ) resistors. The closest I could find come out of a audio cross over. And I tried them breifly just to see if that was the problem. And it worked they just got hot. Well Im looking for a place to get the correct or a alternative resistor. Ive got a pic of the pcb with the correct ones.