Diagnosis
The unit has no power. The outlet and breaker are confirmed good. The issue is internal: a blown thermal fuse or a failed main control board.
How to Fix It
Check the thermal fuse (also called a thermal cutoff). It is located on the heating element housing. Disconnect power. Access the heating element from below. Use a multimeter to test the thermal fuse for continuity. If it has no continuity, it is blown and must be replaced.
If That Didn't Work
If the thermal fuse is good, the main control board has likely failed. The control board receives household power directly. If it fails, no power reaches the display or controls.
Heads Up
A blown thermal fuse indicates an overheating event. Before replacement, verify the heating element for a short to ground and that the high-limit thermostat is functioning. Otherwise, the new fuse will blow again.