Check if there both hot wires and the neutral are ok at the control board.
You should have 110-120v between each hot wire and neutral, and 220-240v between two hot wires. If power is ok, replace control board (the display unit is on the control board).
Part numbers:
White: 74009221
Black: 74009223
Bisque: 74009222
Repairclinic.com has pictures of the parts.
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