Washer-dryer combo will not power on at all; no lights or display.

Safety first: Do not open live electrical parts. Unplug the appliance before internal inspection.

• Check outlet and breaker: Test the wall socket with another device. Reset any tripped breakers or replace blown fuses in the consumer unit.
• Inspect power cord: Look for visible damage along the SMEG washer-dryer power cable. If damaged, have it replaced by a qualified technician.
• Try another socket: Plug the machine into a different, known-good outlet (without extension leads) to rule out socket issues.
• Internal checks: If comfortable, remove the rear/top panel and inspect the mains filter and terminal block for burnt components or loose wires. Tighten connections if slightly loose; replace burnt parts via a professional.
• Call a technician: If there is still no sign of life, the main control board's power supply is likely faulty and requires professional replacement.