Daewoo Buzzer / Sounder Failure

Unit does not beep at the end of the cooking cycle, though it otherwise works.

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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

Failed piezo buzzer on PCB, Buzzer driver transistor open, Buzzer disabled in firmware (rare), Broken solder joints on buzzer pins

How to Fix / Troubleshooting

Safety first: Unplug the air fryer before accessing the control board.

Steps:

  • 1. Check volume settings: Some models allow muting or reducing beep volume. Verify in the user manual and settings.
  • 2. Inspect buzzer: Remove the control panel and locate the small round buzzer on the PCB. Check for physical damage.
  • 3. Check solder joints: Reflow any cracked or dull solder joints on the buzzer pins if you have soldering skills.
  • 4. Replace buzzer or PCB: If the buzzer is open-circuit or the driver is faulty, replace the buzzer or the entire control board.
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Repair Difficulty

Medium 3/5

Required Part

Main Control PCB
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