The lights on my wheel grinder lost power. One of the components on the circuit board had fried. I'm a good enough mechanic to keep most of my trains and accessories running but I can't even identify parts on a circuit board. My electrical engineer son came to my rescue. See the repairs and more information on the Wheel Grinder on the following web pages.
12767 Steam Clean And Wheel Grind Shop - Wheel Grinder Circuit Repair
12767 Steam Clean And Wheel Grind Shop - Wheel Grinder Assembly Sequence (use for disassembly also)