Anyone had complete audio loss on (1) tuner ?? Ran into this yesterday for the 1st time. Normally run in dual mode and TV1 had NO audio (all channels). Put it in single mode, swapped to the other tuner, and had sound. Then it gets more odd... Put it back in dual mode and a while later my daughter goes upstairs to watch TV. A minute later she's yelling down that there's no sound (TV2). Previously I had to swap to TV2's tuner to get sound. Rebooted the box and all's been fine since.
Just to clarify, this occurred on the regular composite (RCA, i.e. red/white) audio outputs.