Sometimes the source buttons don't work (i.e., the image on the screen doesn't change when any of the controller's source buttons are pressed).
Sometimes audio can not be heard.
Almost always, the source content will not appear on the projection screen.
The Extron Switcher/Scaler loses connection with the projector. Currently limited to GMN, RWC 240, BAC 150, and OHSN classrooms and labs. Also was reported at IEC immediately after installation.
Power-cycle the teaching station (In other words, unplug (from the wall outlet) the extension cord that supplies AC power to the teaching station). In some Ott Hall and Burns Hall classrooms, this wall outlet is located inside the cabinet that contains the AV equipment.
Wait 10 seconds, then plug the cable back in, and wait for the boot-up process to complete (usually 90 seconds). This typically causes the devices to begin communicating successfully again.
After that, you may need to power on your source device, if you are using the teaching station PC, document camera, or Blu-Ray player.
Sometimes after the cords have been disconnected from the wall (as happens when the floors are being cleaned), the Network cables may not get reconnected to the appropriate jacks. Usually these are color coded, so verify that the cable color matches the jack to which it is connected, and that the cable is seated firmly into the jack.