Washer-dryer does not power on at all; no lights or display; completely dead.

Safety: Always unplug before inspecting internal components. If you are not comfortable working with mains voltages, contact a professional.

• Check external supply: Test the wall socket with another appliance. Check the plug fuse (UK) and replace with the correct rating if blown.
• Inspect mains cable: Look for cuts, burns, or crushed sections. Replace the cable if damaged.
• Check mains filter: Remove the rear panel and locate the mains interference filter where the cable enters. Inspect for burning or bulging. Replace if damaged.
• Control board power: If the filter is good, the internal power supply on the main PCB may have failed. Look for burnt components or swollen capacitors. In most cases, the entire board must be replaced.