Make sure your wall outlet is functional
First things first, always make sure that the power supply is firmly plugged into both your wall outlet and the back of the display. Once you’ve confirmed that, the next step is to ensure that another non-EO device effectively receives power from the same wall outlet.
Reboot EO Display
Once you confirm your wall outlet is functional, the next step is to unplug and replug the EO power supply. At this point, do you see the EO logo pop up?
If you do see the EO logo pop up, does the display then proceed to turn black? This may be a sign that your EO is sleeping. You can fix this by toggling the sleep wake in your EO App in EO2, or pressing the top right screen button on EO1.