Microwave shows E9 and will not start; interior light and fan may not operate.

Safety: Unplug the microwave before removing the cover. Internal fuses and power supplies are connected to mains voltage.

Steps:

• 1. Check wall outlet: Confirm the outlet has power by testing with another appliance. Avoid using multi-way adapters or extension leads for high-power microwaves.
• 2. Inspect power cord: Look for cuts, burns, or kinks in the Logik microwave's power cord. If damaged, the cord must be replaced by a qualified technician.
• 3. Internal fuse check (for competent DIYers): Remove the cover and locate the main ceramic fuse near the mains input. Visually inspect for a blown fuse (darkened or broken filament). Test with a multimeter for continuity.
• 4. Replace fuse only once: If the fuse is blown and no obvious damage is visible elsewhere, replace it with the exact same rating (amperage and type). If it blows again immediately, there is a deeper fault in the power supply or HV circuit.
• 5. Control PCB inspection: Look for burnt tracks, bulging capacitors, or scorched components on the control board. These indicate the board should be replaced, not repaired at home.

If E9 persists after confirming a good fuse and power supply, the control PCB likely needs replacement by a professional.