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

Safety first: Do not open electrical panels unless you are competent to work with mains voltage. Always disconnect power before accessing internal components.

Steps:

• Check household supply: Verify the circuit breaker or fuse for the dishwasher circuit is on. Test the wall outlet with another appliance if accessible.
• Inspect power cord: Ensure the power cord is firmly plugged in and not damaged or pinched.
• Door fully closed: Some models will not power the display unless the door is properly latched. Confirm firm closure.
• Internal checks (advanced): Remove the toe-kick and inspect the main control board area for burnt components or a blown fuse. Replace only with identical rated fuses.

When to call a technician: If there is still no power after external checks, or if the control board appears damaged, professional diagnosis is required.