Diagnosis
A completely dead panel indicates a lack of power to the control unit. This points to the in-line fuse on the main control board or a wiring fault.
How to Fix It
Disconnect power at the circuit breaker. Remove the lower kick plate. Locate the main control board (typically on the right side behind the panel). Visually inspect the small, clear 5-amp fuse on the board. If the metal filament inside is broken, the fuse is blown. Replace it with an identical 5-amp, 250-volt ceramic fuse.
If That Didn't Work
The issue may be at the power terminal block. With power OFF, check that the 120V line (black) and neutral (white) wires are securely connected to the terminal block at the bottom of the dishwasher.
Heads Up
A blown fuse is usually a symptom, not the root cause. Common triggers are a power surge or a short in the control panel wiring. If the new fuse blows immediately, a professional diagnosis is required.