I have connected my new LG oled tv to my old Panasonic HTS using HDMI, it includes a HD recorder box in the loop with an optic lead from HTS to HD recorder. I used the "Device Connector" on the TV but sill cant get sound through the HTS. Am I missing something?, or am I naïve thinking just because the HTS has HDMI and Optical ports, it will be compatible with the tv?
You would need the old HTS to support HDMI-ARC for the HDMI cable to get sound from the TV to the HTS. You would also need to turn on ARC in the TV menu.
Plan B would be to connect the HD recorder to the TV and the optical out of the TV to the HTS. If the HTS has a disc player you will need the HDMI connection to get the video to the TV. The TV optical output may have to be turned on in the TV menu.