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

Safety first: Ensure the socket is switched off before removing the plug. Do not work on live circuits.

• Check wall socket: Plug in another appliance to confirm the socket has power.
• Inspect plug fuse (UK models): Remove the plug fuse and test or replace with the correct rating (usually 13A). If it blows again immediately, there is likely an internal short.
• Check power cord and switch: Unplug the machine, remove the top cover, and trace the power cord to the mains filter and on/off switch. Ensure all spade connectors are tight.
• Visual check of mains filter: Look for cracking or burning on the mains interference filter. Replace if damaged with a Bush-compatible mains filter.
• Further diagnosis: If all visible components are intact and the machine remains dead, the main PCB or internal wiring may be faulty and should be checked by a qualified technician.