I have two monitors, they are both the AOC E2770S. I connected my Logitech Z200 speakers into the aux. port on the back of Monitor #1, this is the one I normally use for sound. When I plug the speakers into Monitor #1 I can't hear any sound but when I plug my speakers into Monitor #2 I can hear sound. I would just like to know why the monitor I normally use for sound just suddenly stopped working and possibly how to fix it. Thanks.