I work with a StudioLive 24.4.2 board that we have had for a few years. We have a couple aux sends to send an audio mix over to a video switcher to record events, and for a long time, it has worked flawlessly. In the middle of an event, we completely lost audio output to the switcher. I checked to make sure all of the settings were the same (they were), and that the cables were still in working order (they work fine). I am not exactly sure why we lost signal completely and would greatly appreciate any ideas or help.