Dishwasher does not power on at all; no lights or display.

Safety: Always turn off power at the breaker before inspecting electrical connections.

• Check outlet and breaker: Verify the socket has power by plugging in another appliance. Reset any tripped breaker or replace a blown fuse.
• Inspect power cord: Check the dishwasher's power cord for cuts, burns, or loose connections at the terminal block.
• Test on/off switch: Access the control panel and check continuity of the on/off switch with a multimeter. Replace if faulty.
• Control board: If power reaches the board but there is no response, the board's low-voltage supply may have failed and the board will likely need replacement.