Insignia
Power Supply Transformer or Coil Noise
Air fryer makes a buzzing or humming noise from the control area even when idle.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Vibrating transformer on main control board, Loose mounting screws, Failing power supply components, Electrical noise from mains
How to Fix / Troubleshooting
Safety first: Unplug the air fryer before opening the housing.
Steps to reduce buzzing noise:
- 1. Confirm source: Place your ear near the control panel area (while safely away from vents) to confirm the noise originates from the board.
- 2. Inspect board mounting: Remove the cover and ensure the main control board is firmly screwed down and not vibrating against the housing.
- 3. Check transformer: If a small transformer is present, ensure it is securely mounted. Add a thin insulating pad if it vibrates against the case (only if rated for heat and electrical safety).
- 4. Replace main control board: If the noise is loud or accompanied by flickering display or erratic behavior, replace the board.
Warning: Persistent loud buzzing can indicate impending power supply failure.
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Repair Difficulty
Medium
3/5
Required Part
Main Control Board
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