I have a 47" LG HDTV from 2011. Nothing fancy, still just LCD, but it has an optical output via toslink. The Chromecast plugs into the TV's HDMI. There's also a receiver under the TV with an toslink optical input that's free. My problem is the Chromecast's audio plays through the TV's built in speakers, which sounds tiny. But maybe all along I've had an alternative but just never realized it?
If I connect a toslink cable from the TV's optical output to the receiver, will the audio that's coming from the Chromecast's HDMI be forwarded to the optical output of the TV, then into my receiver? Will this pipe any audio that's playing from the TV straight to my audio receiver? So, even OTA digital broadcasts?
I couldn't find any settings for controlling the optical audio output on the TV. Is the TV always outputting to the optical link, and just waiting for a toslink cable to be connected? I'm also wondering if volume control is controlled via the optical link - so whether I'd use the volume control on the TV or the volume control on the receiver? I obviously don't want the TV speakers on at the same time as the receiver is playing the audio.
Also, is there noticable delays with this setup? I'm imagining that the HDMI audio has to pass through the TV to the TV's optical output, then to the receiver before it gets played on the speakers. Is this typically OK?