ARC is for audio return and it might save us from using an optical or other audio connection from the TV to the receiver but your seasoned installer installs the optical cable because ARC is never a sure thing.
As to the auto switching, I've yet to find any system do that. I know folk want it.
If the HDMI pass through is failing that's something to discuss but the TV is only 720 so it's possible that we have to tell all the gear to limit to 720. Your installer should do this for you.
I just bought a Yamaha 371 Receiver and hooked everything up to my Samsung TV that is probably about 6 or 7 years old. It is a 720p DLP from roughly 2005/2006. I was going to reduce the amount of wires with this new receiver by running all of my video and audio cables to the receiver and then 1 HDMI cable from the receiver to the TV. I tried doing this but I do not get any video output when I turn my TV to HDMI. Xbox, satellite, and blu ray are all blank. When I run the video cables into the TV and keep the audio cables in the receiver everything works fine but I constantly have to switch inputs on the TV.
I was thinking that the receiver would automatically switch video feeds for me and I could leave the TV on the HDMI input.
Also my TV is old and does not support ARC...can I not use the HDMI out from the receiver to the TV and have the Receiver switch video feeds for me if my TV does not support ARC.
I have done some research but I am still lost...thanks in advance.