Originally Posted by lennyp
I just replace my plasma TV with a Sony A9F with eArc firmware update. I have it set up with eArc/Arc between the A9f and my 3070 (2.70 firmware) using a new 10' certified Monoprice 4k HDMI cable (suppose to support ethernet per description). All my external sources go into the 3070 to the TV. For sound to work using the TV apps I had to turn on CeC/Brava Sync. I didn't think it would be necessary, but so be it.
I am occasionally getting no sound when switching from using TV internal apps to using my external apps like cable box. In order to restore sound, it looks like I need to get the 3070 to recognize the change of sound source. One method was to bring up the 3070 menu (input) and simply exiting it. That usually toggles the sound back on. Also turning everything off and back on works as well. Not sure how to fix this or what is causing it to happen.
My AppleTV 4k reports my cable is ok for 4k/Dolby Vision.
Any thoughts on this? I am not sure how the eArc is suppose to work or if there are any bugs I am not aware of.
I confess that I can't be much help you. But I find CeC to be very hit-and-miss depending on your system and components. I've never gotten it to work on any of my systems and have consequently given up on using it (and consequently, ARC). I rarely use any TV apps, but when I do, I go with an optical S/PDIF cable for audio from the TV to my AVR. Of course this does limit what audio you can pass through.
1) JVC DLA-NX7 & Sony 65Z9D, Yamaha CX-A5200, Outlaw Audio 7900 & 7700, UDP-203, DP-UB9000, UBP-X800M2, Roku Ultra
2) Sony 75Z9D, Yamaha RX-A3080, 2xOutlaw Audio 2200s, UDP-203, UBP-X800M2, Roku Ultra
3) Sony 75X940E, Yamaha RX-A2080, UDP-203, UBP-X800M2, Roku Ultra