How to Fix / Troubleshooting

Safety: Unplug the unit before tightening screws or touching internal components.

Isolate source: Listen carefully to determine if the noise comes from the fan area or the control panel.
Check fan assembly: Inspect and tighten the fan blade and motor mounting screws. Replace the fan motor if the noise is clearly from worn bearings.
Inspect control board (advanced): Open the control housing and gently press on large components (transformer/inductor) with an insulated tool while the unit is running (only for experienced technicians). If the noise changes, secure the component with non-conductive adhesive rated for electronics.
Replace noisy components: If the noise is excessive and cannot be reduced, replace the fan motor or main control board as appropriate.

Oster air fryer emits a high-pitched whine or electrical buzzing sound during operation.

Possible Causes