KDL-46W905A won't play audio through HDMI 1.3 home theatre

[babydinosaur]

I've connected my W905A to an LG home theatre that is only HDMI 1.3, so I have audio playing through it via optical audio out to get the TV sound go through it. There is nothing else connected to the TV.

When I select Speakers to be 'Audio System' I get 15 seconds of great Dolby sound, then it reverts back saying 'TV speakers actve due to Audio system communication failure'. I've found that when I disconnect the home theatre's HDMI cable from the TV, the audio works properly through the Audio System.

Obviously, I don't want to keep on plugging and unplugging the HDMI cable, so is there a resolution for this?

Thanks.

[Anonymous]

Hi there

Im going to assume that your LG Home Theatre is not HDMI ARC compatible - and thats why you have the optical cable connected. 

Im wondering if the TV is getting confused here and "attempting" to output audio via HDMI - initially anyhow.

A couple of suggestions to try:

1. Ensure that the External Audio settings are correct : HERE
2. Try using another HDMI port on the TV - Im assuming you have connected it to HDMI 1 - Try HDMI 2
3. Ensure that the settings are correct on the LG System.

Hope that helps.

[babydinosaur]

Yes, you're right, it's not ARC compatible,

Thanks for the suggestions. Unfortunately none of them have had any impact. I've tried all other HDMI ports. When I change the External Audio selection I get 15 seconds of sounds as it should be, then I get the error mentioned before and it reverts to TV speakers. And there is nothing in the LG home theatre settings of any use.

[babydinosaur]

I've since found out that if I unplug my home cinema's HDMI cable from the TV completely the sound comes through the optical audio correctly. So now if I want to watch a blu-ray or DVD I need to manually plug in the HDMI cable beforehand. Pretty ridiculous, and not very smart for a Smart TV in 2013! Sony, your TV is defective and you really do have a moral obligation to sort this out.

[Anonymous]

Hi there

That doesnt sound quite right, does it (pardon the pun).

Suggestion: Try setting the Sound for Digital Output from AUTO to PCM and see if that makes a difference.  Instructions : HERE

Failing that, if that doesnt work, it might be best to give Sony a buzz : HERE

Cheers

[Bravia55HX]

have you tried changing the sound on the tv from tv speakers to audio system ?

(remote-options-speakers-change from tv to audio system)