Deco P9 - One of the Wi-Fi access points is emitting a whistling sound

Deco P9 - One of the Wi-Fi access points is emitting a whistling sound

Deco P9 - One of the Wi-Fi access points is emitting a whistling sound
Deco P9 - One of the Wi-Fi access points is emitting a whistling sound
2026-02-12 16:33:29 - last edited 2026-03-02 08:54:11
Tags: #Deco P9 trouble
Model: Deco P9  
Hardware Version: V1
Firmware Version: 1.3.0 Build 20250804 Real. 58832

Since some weeks, the main access point is emitting a whistling noise.

 

Is it a bad news or not ? What can I do to eliminate this sound ?

 

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Re:Deco P9 - One of the Wi-Fi access points is emitting a whistling sound-Solution
2026-02-13 06:42:20 - last edited 2026-03-02 08:54:11

  @Fremel 

Hi, here are some suggestions for your reference:

  • Please move the Deco away from the high-power home appliances.
  • Reset the Deco by holding the reset pinhole for 1s.

If it was still the same, please reach out to local technical support for further assistance:

https://www.tp-link.com/fr/support/contact-technical-support/#Hotline-Support

 

Thank you very much.

Best regards.

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Re:Deco P9 - One of the Wi-Fi access points is emitting a whistling sound-Solution
2026-02-13 06:42:20 - last edited 2026-03-02 08:54:11

  @Fremel 

Hi, here are some suggestions for your reference:

  • Please move the Deco away from the high-power home appliances.
  • Reset the Deco by holding the reset pinhole for 1s.

If it was still the same, please reach out to local technical support for further assistance:

https://www.tp-link.com/fr/support/contact-technical-support/#Hotline-Support

 

Thank you very much.

Best regards.

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Deco P9 trouble