AVS › AVS Forum › Audio › Receivers, Amps, and Processors › Optical audio out from TV to receiver - no sound...works with analog audio out?
New Posts  All Forums:Forum Nav:

Optical audio out from TV to receiver - no sound...works with analog audio out?

post #1 of 5
6/8/12 at 4:44pm
Thread Starter 
I just received an optical audio cable to connect my 42" Vizio TV to my Yamaha HTR-6040 receiver. I had it hooked up via the analog audio cables but because I currently have a 3.1 setup and plan to make it a 5.1 soon (I have the two other speakers, just haven't had the chance to hook them up yet and you really need to use digital audio to take advantage of a surround sound setup.

Anyway, it works fine using the analog audio out, but when I use the optical audio out there is no sound. When it goes through the auto setup it successfully finds and tests the left, right, and center channels.

I went through the user manual of the receiver and didn't find anything that I needed to do. I went through the menu on the TV and changed the digital audio from DTS to PCM and turned "Surround sound" from off to on. Still no sound.

Any ideas would be greatly appreciated.
Reply
Reply
post #2 of 5
6/8/12 at 5:28pm
You'll want to leave the TV's audio out setting to Dolby Digital otherwise you'll just get PCM 2.0 when you do get it to work correctly. Do you have another optical audio source you can test (eg. cable/sat box) as it could be an issue with the TV optical jack or the optical cable could be defective. Also if your TV has an HDMI-CEC setting, try setting that to OFF.
Reply
Reply
post #3 of 5
6/8/12 at 10:14pm
You should not need to do anything with the AVR. As long as you select the correct input from the TV and set it to Auto, you'll be good to go on that front. As jdsmoothie suggested, try connecting a DVD player to that input to see if you get sound. The problem is likely with the TV setup. With the some sets, you need to enable the digital output.

btw, the Surround mode on the TV likely only applies to the TV speakers. There's nothing the TV does to create surround on an external system. If you pass PCM from the TV, it will only be stereo since the S/PDIF protocol used for optical is limited to two channels of PCM. If your set can pass DD 5.1, it is simply passing through an encoded audio source from the source. The Surround setting on the TV has nothing to do with either of those outputs.
Reply
Reply
post #4 of 5
6/8/12 at 11:58pm
The Vizio is built by LG..
And will output an encoded Dolby Digital 5.1 stream @ Optical Out if the original off-air program includes this...

Just my $0.02.. wink.gif
Reply
Reply
post #5 of 5
6/18/12 at 6:26am
Thread Starter 
Turns out (as far as I can tell anyway) the optical out on my TV is only for the "TV" input and does not pass through the sound from any other input. As I do not have TV I can't really test that but I hooked up my PC to the receiver using the optical audio and it works great so I guess I will have to do without digital audio out from the TV until I get a TV that has either optical out with pass-through for all the inputs or a digital coax audio out.

Thanks for all of the answers.
Reply
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Receivers, Amps, and Processors
AVS › AVS Forum › Audio › Receivers, Amps, and Processors › Optical audio out from TV to receiver - no sound...works with analog audio out?