Mornigstar,
If there is power to the pedal and it's getting hot, but no power is getting to the machine itself, then there is an open somewhere.
I'd start by taking the controller apart and cleaning it as I inspected it. Check all the connections at the motor, the plug, the controller too.
I don't know how the wiring on the Viking is set up, so that is the best guess I can do from here.
Joe