I'm starting to think I've got a LEMON
Mercury with a hardware problem.
I finally got the new 1.33 version of the firmware loaded, but it didn't help. I re-scanned the channels, and it still gives audio with Montanna
PBS, which isn't
AC3, but it gives no audio on the AC3 PBS channels. I've tried it with the SPDIF set to both ON and OFF, and also with and without regular RCA audio cables attached. Tried it with 2 different optical cables and tried it with 2 different Extigy decoders. The Mercury just doesn't seem to be passing AC3. :-(