Black+Decker Electrical or mechanical resonance in fan or power supply

Air fryer emits a high-pitched whining noise during operation.

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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

Convection fan motor resonance,Loose fan blade,Switch-mode power supply coil whine on main control PCB,Panel vibration at certain fan speeds

How to Fix / Troubleshooting

Safety first: Unplug the unit before internal inspection.

Steps to reduce whining noise:

  • 1. Identify source: Listen carefully to determine if the noise comes from the fan area or the control panel.
  • 2. Secure fan components: Tighten the fan blade and housing screws. Ensure no parts are lightly touching the fan guard.
  • 3. Dampen panel vibration: If the noise seems to come from a vibrating panel, add thin high-temperature foam or washers between the panel and chassis where safe.
  • 4. Replace noisy motor or board: If the fan motor or main control PCB is the source of persistent high-pitched noise, replacement of the convection fan motor or main control PCB may be necessary.
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Repair Difficulty

Medium 3/5

Required Part

Convection Fan Motor
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