I just had my older moto box replaced this last weekend with the newer moto RNG 150N. I have it connected to my Yamaha RX-V467 reciever and I'm having severe audio dropping with both HDMI and optical/toslink connections. Video is fine. If I use the standard component cables that Comcast provides, everything works fine but the audio is definitely lackluster. At this point, I'm actually thinking of going back to the older box to get the better audio experience back.
After a little fussing last night, i was able to get everything up and running. I had to run everything through HDMI, which I'm a little bummed about because I had to fork out the additional cost for cables. I ended up using the "PCM" setting on the cable boxes audio menu, "Pass Through" was a no-go as I still had the dropping. So far so good. It's a bit frustration that the tech basically left it up to me to figure out what the problem was and had no suggestions for me, and I had to come to an on-line forum to get answers. Thanks for your help guys, I'll post again if anything else comes up.
Menu settings still don't save. Every time I turn on the tv/cabe box/reciever, I need to set the cable box back to the L-PCM audio setting. Once set, everything works fine. Incredibly annoying but I have other Comcast issues regarding my internet that I'm dealing with at the moment. Seems like I've been on a constant rotation with cable, internet and billing issues for the last 3 months now. Thank god I don't have Comcast phone service...
No matter what audio setting I tried, the audio skipped unbearably!
So I exchanged it at the local office for a different HD only box (RNG110 model). The audio is better but I have to power ON and OFF and back ON the box because the picture initally displays in VGA mode (all stretched and zoomed in).
In my opinion, every box has it's glitches whether it's from a software or hardware standpoint.
for my RNG 150N, all i had to do was change to PCM. it seems to be working. no need to call them and check on the nodes. also, so far, it seems to remember the setting.
My only further question concern is that, now my home theater says the sound is "LPCM 2.0" for everything. So i dont know if the cable box is translating surround sound into PCM, and so am I truly getting surround sound. or, ...am I just getting stereo. I'm not sure yet. I'll have to try a good surround movie to be sure (my home theater can create faux surround so Im not sure yet what exactly is going on).
I have noticed the audio will change in real-time through my Yamaha surround sound receiver. For example, during a show when a commercial comes on with different audio detected my receiver changes to a different type of audio output. This seems allright but for those people out there that are really picky you can tell when the audio changes.
Under the HDMI Settings menu on the Comcast STB I have mine set at L-PCM and the AUTO DETECT is disabled.
Does anyone know if the AUTO DETECT is for just AUDIO or VIDEO as well?
All of the settings under HDMI Settings seem the same to me.
before i changed mine, it was certainly switching the listing of audio type based on channel (eg. Dolby digital 5.1; dolby digital 2.0). Now, since i changed it to PCM it just shows "LPCM 2.0" for every channel. But i think it is still varying from channel to channel, just that my home theater does'nt show the change now.
On mine, I believe it was within the HDMI audio menu that I switched off autodetect, so it should'nt affect video at all. actually, the switching between HD video 1080i to SD it appears to still be switching fine.
so far so good for me, I think - i'll report back if anything still is wrong.