acer nitro XV272U noticed a buzzing associated with the brightness

TroyG

I just purchased an acer nitro XV272U a couple week ago. Manufacture date is Jan.2024. Just noticed a buzzing associated with the brightness. Its plugged into a CyberPower surge protector/ battery backup. The outlet the CyberPower is plugged into is grounded properly (I checked it with a tester to confirm). Suggestions?

[Edited the thread to add model name to the title]
[Edited the thread to add issue detail]

billsey

Try plugging it in directly to a wall outlet. If the buzzing goes away then the issue is likely the waveform the CyberPower provides.