These are powered by Main St Mechanical, Panel A, Circuit 30.
These are controlled by the EVO software.

This is running on the Apple Mini.
Open Chrome
The user is admin and the password is admin (all lower case)
Run EVO from the bookmark
Drag the lower screen for the Apple Mini to each desired monitor. 
If you want a different source such as the Sanctuary, drag that screen instead.

If all of the monitor boxes are black, the software should be restarted to refresh the system. If this monitor box says there is no signal, there is a device that needs to be restarted in that system chain connection. It could be a transceiver at either end of the system connections.

Sometimes you may see that the system unintentionally turns on all four monitors in spite of having the monitors been turned off manually. This occurred on 11/18/22.

With the current set up, they system is not capable of turning their TVs on at start up. They must be turned on manually with a remote 12/18/22.

The TV receivers have a POE (Power over internet) connection. If the TV reports that no signal is present, disconnect the Cat 5  cable for 30 seconds and then plug it back in. The receiver will reboot in about 1 minute or so. You should have a picture from the system. 

The three Atrium TVs are plugged into the network switch in the FH A/V cabinet to the side of the desk. You can reset the three Atrium TVs by unplugging the labeled cables shown in the below photograph.