I have a Roamio Plus and 3 Minis. The one Mini in my Kitchen keeps acting up. This morning it said it lost the main DVR, but when I tested the network connection via the menus, everything was ok and the Mini started working.....but with no audio. I've had the no audio problem with this mini before...and a restart is the only thing that fixes it. My Roamio and other two minis work flawlessly....never a problem. I'm thinking I need to ask Tivo for a replacement. Thoughts?