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

Safety first: Verify the outlet with another appliance. Unplug the air fryer before opening any panels. If you smell burning or see smoke, do not attempt further use.

Step-by-step checks:

• Outlet and breaker: Confirm the wall outlet has power and the circuit breaker is not tripped. Avoid using extension cords.
• Inspect power cord: Check the GoWISE USA cord for cuts, frays, or burn marks. If damaged, the cord must be replaced; do not tape or splice.
• Internal fuse check (advanced): Remove the bottom or rear cover to locate the small glass or ceramic fuse on the input side of the main control board. If the fuse is visibly blown (broken filament or blackened), replace it with the same type and rating only.
• Terminal block and wiring: Ensure the cord’s internal connections to the terminal block are tight and not discolored. Loose screws can cause overheating and power loss.
• Control board inspection: If the fuse is intact, inspect the board for burnt components or bulging capacitors. A failed power supply section will usually require board replacement.

When to stop: If a new fuse blows immediately or you see significant board damage, do not continue. Contact a professional technician or GoWISE USA support.