Originally Posted by winterwolfes
It is kind of confusing but it doesn't work that way. There is no "input" from the TV ARC HDMI. You connect the HDMI output on the AVR-1712 (which is the one with ARC) to the TV's ARC HMDI input (HDMI 1). Then basically, when you have ARC enabled the TV sends audio back through the same HDMI cable that it receives the output from the receiver. So the receiver stops outputting the feed from the cable or blu ray and starts playing the audio that the TV sends to it.
So there is no way to change inputs back to TV or Blu Ray because there is no separate ARC HDMI input. The only way to get it to stop doing it that I have found is to go back through multiple steps on the AVR-1712 to turn HDMI control off. Which is really kind of stupid. I was hoping the TV would only enable the ARC stuff when it was streaming through the Smart TV section and then turn it off when I went back to watching cable or Blu Ray. If it doesn't work that way, then I don't understand the point of it.
Since I'm interested in buying the Denon AVR-X1000, I have the PDF manual for it. I assume it works very similarly to your Denon AVR-1712, because it's really just a newer model of the same receiver. Unfortunately, the manual doesn't give much information on HDMI control. I do notice this statement, however: "A recent addition to the HDMI standard is CEC (Consumer Electronics Control), which allows control signals from one device to communicate with another device via the HDMI cable connection. Not all HDMI-equipped devices have this capability. . . . 3. Set the HDMI control function for all devices connected by HDMI cable." Do your Blu-ray player and cable box support HDMI control (CEC)? If not, that might be part of the problem.
Here's the remote for the AVR-X1000. I'm not sure how similar it is to your remote. There are buttons for each input source, including "CBL/SAT", "Blu-ray", and "TV Audio". Are you saying that if you press the "TV Audio" button on the receiver's remote and then press its "Blu-ray" button, you continue to get sound from the TV instead of the Blu-ray player?
Try this trouble-shooting step. Try to isolate the problem by keeping ARC enabled but disabling HDMI control. Can you now change input sources properly using the receiver's remote? If so, HDMI control may be more trouble than it's worth.