I have a Sony 4k TV and I'm trying to use Optical output from TV to Optical input on my SC-07 for sound on the various apps that came with the Sony. My SC-07 displays 24/192 when playing Amazon video but no sound. I have the TV set for external speakers.
Any luck with this yet? I am having a similar issue. I am using the optical out from a Samsung 4k TV to my SC-05. When I set the TV to output PCM there is no issue. When I set the TV to output Dolby Digital however, I don't get sound from the TV's internal apps, like Netflix. If I switch the SC-05's input to something else and then back to the input the optical cable is assigned, I magically get sound. Is this some sort of sync or handshake issue? I don't want to use PCM, I want to use DD. I suspect this is the SC-05 not playing nice with the new 4k TV. I have tried setting the the signal select setting of the SC-05 as PCM, Digital and Auto. This doesn't seem to have an impact on the issue. Does anyone have any ideas of where to start troubleshooting?