So... What if I'm not using HDMI at all.?
I have a TCL TV with Roku, and a soundbar. They are connected via Optical cable. The soundbar has no HDMI connection.
I want the Soundbar to turn on automatically when the TV turns on. And volume to be controlled by the Roku remote. Is this possible?
As the soundbar has no HDMI, you need the HDMI Converter to extract the audio from the Roku.
Roku-->HDMI Converter-->TCL TV, and use the optical cable connect the HDMI convert to the soundbar, you will get what you want.