I finally got a chance to fully test the 502.
I knew about the HDMI only passing PCM audio.
(Although, at first, I forgot I had read it, so I wasted too much time testing, until I thought to look at this thread again.)
Anyway, so then, I connected an Optical cable, and assigned it with the AVR, but I still was only get PCM.
So, Then, I un-assign HDMI, and assign Component, (which I had connected at the same time as Optical, just in case.)
So, then the combo of Component and Optical gives me AC3 audio.
Has anyone been able to use the HDMI video with Optical audio?
It was implied, but not stated.
I was able to do this with my DVR and AVR, (but the TV/CBL label, when assigned to any HDMI input on the AVR, wasn't passing HDMI sound, so maybe that is why Optical worked).
If others have this working, I need to try this with the DVR and AVR and another input label, to see if the AVR is the issue or not.
However, with Optical, the box volume/mute doesn't work; (it just appears w/o effect).
Testing again, with HDMI, volume still works, so it is the Optical that apparently disables it.
Is anyone using the box remote to control Optical audio?
If this a quirk, this makes one need to use the AVR remote, or at least the AVR codes.
I don't know if the box remote can be control the AVR, but certainly my URC univ. remote can, and I will be using the URC, anyway.
The problem is that when using the AVR's mute, it leaves 'MUTING' on the screen.
I have to see if I can change that; if not, it could cause burn-in on the plasma I will be getting.
Normally, when I use volume pass-through, I always change the mute function back to the source device.
Since, it doesn't work it this case, I will have to just reduce the volume a lot instead of muting.
I do indeed get all of the HD Locals via QAM, however, no channel info. and no virtual channel mapping; the latter would be nice.
Is anyone getting virtual channel mapping with QAM?
Without it, I know that if a channel(s) moves to a frequency not previously scanned, I would have to rescan.
At least, though, supposedly, the majors stay in the same range, so I could find one or more moved channels easily.
If the whole range moves, then find one channel, and the rest are easy.
I hear they move them infrequently, so hopeully, it isn't that annoying.
Overall, I like the 502, the A/V quality is excellent.