Question about Onkyo HT510 Receiver

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Onkyo HT R510 is broadcasting all digital and 5.1 from the cable box as pcm

I have Time Warner HD service, and my Onkyo receiver now only plays them in pcm Pro Logic II Movie. It used to broadcast in Dolby D, but no longer does. I am using optical audio cable, and even tried changing the wires but the same result. I have even tried calling the cable company, and they stated it is a receiver problem. When I play a dvd, also optical audio, I have no problem. Can anyone please help?!

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Chances are that Time Warner is just plain wrong. That's what you get with free tech supp....oh, uh right. scratch that.

Your receiver seems to be receiving a 2-channel digital audio signal (PCM) from the cable HD box. With this type of input signal, you can't select Dolby Digital on the receiver.

If you have a Scientific Atlanta 8300 (or a closely similar model):
Press [Settings] button on the remote twice. This will open the General Settings menu. Go to "Audio: Digital Out" and the select Dolby Digital (by hitting [-> Move Right]).

If you have another type of cable box, just review the settings menus until you find something relevant to digital audio out and avoid PCM, stereo or "down conversion", but look for Dolby Digital, DTS or "All".

Please keep in mind, that when connecting devices via HDMI cables, your box may decide it's smarter than you and reset the format of the digital audio back to PCM. This is some possibility of this occurring if the cable box or TV is unplugged and plugged back in.

If you have problems, add the cable box make and model and let me know.

Posted on May 15, 2008

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