Sherfield 402A

If there is no audio from the room speakers, this video shows you some fixes.

If the audio is playing from the wrong device, this video shows you how to change it.

If you are using a Windows device and the video isn't playing correctly, this video shows you how to change the output.

If the adapter you're using with your device isn't working, try the fixes in this video.

If there is no visible cable in the room, watch this video for where to check.