Checked for 110 volt power coming into unit. It was good. Then checked for 14 volt DC power coming out of main board going to the user interface board. It was good also. Troubleshooting videos I watched said this indicates a bad user interface board. Purchased and replaced. Also noticed the gasket at bottom right side of the door was folded out of place. There were signs of moisture getting inside the door panels. I was able to straighten and seat properly when putting the door back on. Not positive but feel the moisture inside the door might be what caused the interface panel to fail.