Dave, Are you sure Power Supply is damaged, or just soot residue?
Was this an: I plugged the harness in upside down? Looks like AC got on the Motor Drive side and the motor too if it is damaged. Unless motor went dead short some how.
I have seen worst, but all those parts are available and replaceable. The power supply board may be fixable, they usually are.
Hopefully it wasn't a flash code engine otherwise you might not get a replacement board. G