How do I connect my ONKYO AUDIO VIDEO CONTROLLED TUNER AMPLIFIER R1 to my TV/Comcast digital box for better audio sound.

https://www.idealspace.net/onkyo/onkyo-surround-sound-systems

Hi Madaline, all you need to do is to unplug the unit from the AC outlet for a least an hour and the unit should reset, Thanks, JT

http://www.usersmanualguide.com/

The Onkyo TX8011 is a Stereo Receiver. Two ways to connect:
1) The HD Cable box should have an audio out (typically red and white). Connect this to the Obnkyo CD input (red and white). The volume may be controlled with the Cable box remote or Onkyo remote. The TV volume may be muted or ON.

2) Connect LCD TV's audio out to Onkyo TX8011's CD input.
This is not a great way to set up, as the TV volume, when moved high, will attenuate (over load) the amplifier, leading to a jarring sound on the speakers. To avoid this, the TV volume should be ALWAYS FIXED low.. say about 30%. Only the Onkyo's volume should be adjusted while watching.

Hope this helps.

I did not find the manual for the Model # you specified, but you may find what you're looking for at this website:

http://www.us.onkyo.com/download/own_manuals.cfm?cat=Receiver

If your remote also controls the Cable Box you might want to look at its audio settings. Maybe you muted it.

BTW: it would be a good idea to also run video and analog audio from the cable box directly to the TV if it has speakers so you can watch and listen independent of the Onkyo.

Not sure if this is your fix, but I had what I thought was the same problem. I played with my Onkyo quite a bit ensuring the correct assignments for HDMI, audio and all that stuff. Turns out I neglected to make sure the output devices were properly assigned. Many devices aren't default to output sound over HDMI. I changed the audio out settings on the cable box to HDMI and suddenly the Onkyo worked great. I know, I'm an idiot for not checking that in the first place, but maybe someone out there is having the same trouble as well.

Connect the HDMI outputs on your various components to the HDMI inputs on your receiver. Connect the HDMI output on the receiver to the input on your TV. HDMI incorporates digital audio, so no need to buy optical audio cables. If your receiver does not have HDMI inputs for all your components, you will need to make a choice. HDMI = Best, component video + optical audio = second best, S-video+ optical audio = third best

Connect the HDMI outputs on your various components to the HDMI inputs on your receiver. Connect the HDMI output on the receiver to the input on your TV. HDMI incorporates digital audio, so no need to buy optical audio cables. If your receiver does not have HDMI inputs for all your components, you will need to make a choice. HDMI = Best, component video + optical audio = second best, S-video+ optical audio = third best

I have the same problem with my Sharp Lcd and Onkyo 804. I believe one problem is that the TV can not accept dolby digital or dts digital audio signals through HDMI. It will play sound if it receives a PCM signal through HDMI. You can try switching the type of signal on the cable box settings and on the dvd player. I switched to PCM and got sound through the TV and the receiver. The problem is that PCM is usually only a 2 channel signal and Dolby 5.1 will sound better through the surround sound theater system. I have not found an absolute solution to this yet, but I am willing to not get sound through the lousy TV speakers in order to get top notch sound through the Onkyo.