The only audio outs on your TV are optical audio and headphone out. You must have tried using TV RCA audio inputs which would not work.
The receiver has optical input so use that one as your first choice. You will get digital surround sound that way. You may have to turn this on in the TV menu, turn the TV speakers off, and set the audio mode to output in surround sound.
If you use the headphone out (which is analog stereo) the TV volume will affect the volume coming from the receiver and you will only be able to get analog surround sound.