Power supply light

A red or amber light on a power supply is a power supply issue, a red light on a console is not a power supply issue.

The power supply should always have a light on it.

Orange light on power supply/no light on Xbox One = Xbox One is off

White light on power supply/no light on Xbox One = Xbox One is in standby (charge controllers, download updates, etc.)

White light on power supply/white light on Xbox One = Xbox One is on

The light on the power supply activity doesn't indicate there is a problem with the power supply. (Only a red light or no light is an indication of a power supply issue)

What does the light(s) on the console show when trying to power it on?

Power Supplies don't usually make humming noises. If your Power Supply is in a non-ventilated area it will overheat and the temperature will raise, the Power Supply may show a red light and your console may show 3 flashing red lights or no light at all.
if you encounter 3 red lights try the Flashing Lights Solution, if you encounter no power try the No Power Solution. If the Flashing Lights Solution or the No Power Solution doesn't solve your problem your Power Supply will need to be replaced.

verify light on power supply , if blank screen and power supply light is white or orange, issue is with console, try press and hold eject + power buttons at the same time, if does not work, another wall outlet, if power supply has no light, its defective