Originally Posted by Carterman32
I have an lg 55lm6200 and just purchases a Pioneer VSX - 820-k receiver. I've hooked my cable box to the receiver's input using hdmi, and then used another hdmi cord to send the signal out to the tv.
I can see the video signal, but no sound comes out. I've tried turning ARC mode off and on using the tv settings, but to no avail.
I've tested the speakers/receiver using other devices and they work fine.
What am I doing wrong?
Had to give this a little thought as to how it explain it.
There may be an audio out set point in the in the set top box or you could have a bad input on the AVR, or as simple as a bad cable. There is also a possibility that your AVR has a menu option that turns audio pass through off, I have that on my AVR and use on to attach wireless headphones to the set's with RCA cables and the sets onboard speakers work for times that I do not want surround sound. Sometimes we need to read all the owners manuals together to unfold rubrics cube.
and then there is this
The ACR out from the TV is for audio generated with the TV's tuner or in the case of smart TV's the onboard apps, not from a cable\ satellite box or any other outboard player. If you have an over the air antenna, I do, just incase the cable gets cut or someone shots down the satellite, and you switch inputs on the TV to the internal tuner, the ARC output from your TV would go live, your tuner would have a signal there to play. It would be the same for the optical out from the TV to the tuner. If you try an optical cable from your TV's out to the optical input on your AVR and do not switch the inputs on the TV, and then switch the input on the AVR to the optical input you well not get a signal because switching will turn the audio out put from the AVR off and look for an audio signal on the optical input that is not there. See it can be just a little confusing at times.
I think you are trying to get your system to do something it cant.
In all my TV's and the oldest is 3 years and they run off HDMI, there is a menu option for digital audio out that gives me a choice of dolby, that is the 5.1 or PCM output and this is the 2 channel stereo. This is the way the digital optical out is used with a sound bars and we use 2 systems like this. I had a setup with a 62inch DLP years ago, that the satellite box feed the HDMI signal into the TV set, and the AVR not having HDMI used digital optical for the audio from the satellite box. With the TV as the source switch it would pass the digital signal to the AVR unaltered and that included off air. I also used optical for the dvd and cd players to the AVR. With that setup I needed to have the audio from the source come to the TV over RCA audio cables to use the TV's speakers.
In my current set up I have an optical cable in the wall that can be used just in case that satellite goes down and the internet is lost at the same time, and I do not use ARC or CEC.
HDMI cut down the cables but with all the ACR, CRC and HDMI switching AVR's, came increased the confusion, and we are not even getting into lossy & loos less audio.
Hope that helps, it is not the way its plugged together is the way we think sometimes.