Sorry I overlooked your query reply for some reason. Replying to a poster, rather than just the thread, is “safer” as then I’ll get notified for sure.
My Yamaha amplifier is from 2004 (an HTR-5740) so hopefully if you have a Yamaha (and it’s newer), it will also have digital optical audio input. On mine, the input is on the back lower left of the rear panel (left when facing the rear panel). Memory is pretty vague here but since optical connectors are dust-sensitive, there may be a cap or cover over the area and there is a “trapdoor” on the Toslink plug itself that is pushed out of the way when you insert the connector, which probably has a protective dust cap that you’ll need to remove before using it, if I remember correctly.
I just looked now as best I could through the back of our TV stand. The unused ports do have dust caps. Am correcting my initial version of this post. Just noticed the manual diagram is for the HTR-5750 and in the notes below the HTR-5750 diagram, the input #2 for the HTR-5740 is different and is for DTV/CBL - so I apparently managed to use the correct input for digital audio output from our TV after all. The best thing is to find the manual for your amplifier, unless you have either the HTR-5750 or 54740. Hope this helps!
