I have a pvr-150 that has been in use with s-video inputs only for months. I'm fairly sure the tuner, including sound, was working fine at one time, but now that I am ditching my cable box and therefore no longer using s-video input I reconnected the cable. I'm able to tune channels and get a picture, but there no sound at all when watching live TV via Myth with this card. If I switch to an HDHomeRun tuner the sound works fine. This is true on both the core/md where the tuner is as well as trying to watch from a MD.
Before I try deleting the PVR-150 from linuxmce and myth then run through the setup wizard again, can anyone give me ideas of stuff to check?