Dishwasher does not power on at all; no lights or display, no response to buttons.

Safety first: Before opening the appliance, ensure the circuit breaker is off and the plug is removed from the socket.

• Check household supply: Confirm the wall outlet works by testing with another appliance. Reset any tripped breakers or replace blown fuses.
• Inspect power cord: Look for cuts, crushing, or burn marks along the SMEG dishwasher's power cord. Replace if damaged.
• Access mains filter: Remove the lower front or side panel to locate the mains filter where the cord enters. Check for burnt components or loose terminals.
• Test control board supply: If comfortable with electrical work, verify that mains voltage reaches the control board. If the board receives power but remains dead, it is likely faulty and should be replaced.
• Call a technician if unsure: Mains voltage troubleshooting can be hazardous; seek professional help if you are not experienced.