For example to check how many hours the monitor has been on?
⚠️ Changing settings in the service menu of a Dell monitor could void your warranty. Only proceed if you know what you are doing and are willing to take that risk
- Connect the monitor with either a hdmi or display-port input source (usb-c won't work, at least not for me)
- Make sure monitor is turned off
- Press & hold enter using the joystick (enter is just the center of the joystick)
- Double click on the power button (while holding enter down with the joystick)