I have a dishwasher that seems to not have power, but I confirmed that it does. It's about three years old, Frigidaire, no indicators on the top/front panel come on at all.
"I confirmed that it does"
In doing so, you removed the toe kick, disconnected the wires in the "J" box and after ascertaining there was power there, reconnected the appliance?
Next in line is the internal electronics.