Found the problem. Pulled out the DW and found the wiring in the junction box was burned in two. Cut out burned wiring, removed wire nuts on unburned wiring, stripped wiring back and soldered all connections. Installed new wire nuts over soldered joints, taped everything well and put everything back together. Plugged the DW in and the panel and buttons lit up. Tried to run a cycle, but washer would not fill. Pulled off side panel and checked float switch. Seemed OK. Tried resetting everything by cancelling the drain cycle. Tried "rinse and hold" and seemed to fill normally. Tried a complete wash cycle and everything worked normally. Thanks for your help. My wife thanks you, too, as entertaining during the holidays without a dishwasher is not fun!