Multicooker does not power on at all; no lights or display when plugged in.

Safety first: Ensure the socket is switched off and unplug the cooker before opening. This repair involves mains voltage.

• Check outlet and cord: Test the wall outlet with another device. Inspect the AEG power cord for visible damage and replace if necessary.
• Inspect internal fuse: Remove the base and locate the internal fuse near the mains input. Test with a multimeter and replace with the same type and rating if blown. Investigate for underlying causes such as surges or shorts.
• Check mains connector: Ensure the mains terminal block and strain relief are secure and that no wires are loose.
• Examine power supply section: Look for burnt components or bulging capacitors on the main PCB. If present, the board should be replaced rather than repaired in most home settings.
• Test after reassembly: Reassemble fully before plugging in. If still dead, the main PCB or power module will likely need replacement by a technician.