Yeah, a slight hum can be common, especially with HDR or high brightness. It's usually coil whine from the power components. First, isolate the source.
- Turn the monitor brightness down to 50% or lower using the OSD Picture settings. If the noise diminishes or stops, it's likely electrical noise from the backlight circuit.
- Disable HDR and any dynamic contrast features (like 'HDR Effect') in the OSD. These modes can increase power draw and cause noise.
- Check the power adapter. Ensure it's placed on a hard, flat surface with good ventilation, not buried under cables or papers.
IF THAT DIDN'T WORK: The noise could be related to a specific input signal. Try a different HDMI or DisplayPort cable. Also, switch the monitor's 'Smart Energy Saving' feature On or Off in the OSD General settings to see if it affects the power regulation and noise.
HEADS UP: Normal power consumption is 36W (typical) and can go up to 41W (max). Higher power states are noisier. If the buzzing is loud, high-pitched, or new, it could indicate a failing component.