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

Safety first: Unplug the cooker before any inspection. Mains voltage is dangerous.

Steps to diagnose no-power condition:

• 1. Check outlet and plug: Test the wall outlet with another appliance. Inspect the Steba plug and cord for cuts, burns, or kinks.
• 2. External fuse (if fitted): Some regions use fused plugs. Check and replace the plug fuse with the correct rating if blown.
• 3. Open base and inspect mains wiring: With the unit unplugged, remove the base cover. Verify that the mains cord is firmly connected to the internal terminal block or PCB and that there are no burnt connectors.
• 4. Check internal fuse: Many Steba multicookers have a small glass or ceramic fuse on the main PCB. Test it with a multimeter and replace with the same type and rating if open.
• 5. Inspect power supply section: Look for burnt components or bulging capacitors on the PCB. If present, the entire main control board will usually need replacement.

Warning: Do not bypass fuses or operate the unit with exposed wiring. If you are not trained in electrical repair, seek professional service.