Contributor I

Answered

Sonos Amp, LG CX TV (2021), no HDMI-ARC audio

Forum|Forum|5 years ago
May 29, 2021
16 replies
2116 views

Hi
I have Sonos Amp (about 3 years old), connected to TV and two B&W Speakers with Wharfdale passive sub. Brilliant.
I had a Samsung Smart TV, and HDMI-ARC audio worked well.
I now have new LG CX 65” TV (2021), and have issues with ARC.
No ARC Audio passes to the Sonos. I have to use “Internal Speaker” on the TV.
Sonos is now only useful for music from iPhone. It is gathering dust...
It once worked after a power outage, some sequence of power-on may have coincidentally worked.
This was only once, till I switched the TV off. After that, I had to go back to “Internal Speaker” on the TV again.
I have tried many times, all combinations of settings. Read many forums.
Sonos 2 App on iPhone fails to connect the audio to the TV.
I did a Diagnostics = Ref 2071482316
Please could you assist?
Thanks

This topic has been closed for further comments. You can use the search bar to find a similar topic, or create a new one by clicking Create Topic at the top of the page.

Best answer by I.am.Hagar

Hi Ken and GS

Thank you both for your support.

Here is a happy outcome:

The SONOS "automated" Support prompt guided me to the point where it said "Please disconnect all HDMI devices except the Beam from your TV. Unplug your TV from power for 1 minute. Plug your TV back in and test with a TV program."
I did this an the TV switched on and went direct to ARC Audio to the Sonos Amp!.
I switched the TV off and on again to check, and it still worked.

The trick seemed to be to disconnect all other HDMI inputs from the TV (used the “free-to-air TV input to get program, that test).

Any last comments?

Show previous replies

I

I.am.HagarAuthor

Contributor I

Hi Ken

The “mute on/off three times and press A/V reset” works on the LG CX as well ! Thank you..

I did the reset, plus the connect sequence via the App, but no go.

Ken_Griffiths

Dunno then, you may possibly have a hardware fault somewhere, either the TV, or Amp and if Amp was/is working with the Samsung, it seems like it’s the TV. Possibly the power outage was the cause, but who can say? - I would contact both Sonos support and LG support desks. With Sonos, also submit a system diagnostic report and give them the reference number and ask them to take a look to see if there are any obvious signs of a fault. You can contact Sonos support via this LINK

I think the LG support option maybe available to you via this link:

https://www.lg.com/au/support

I

I.am.HagarAuthorAnswer

Contributor I

Hi Ken and GS

Thank you both for your support.

Here is a happy outcome:

The SONOS "automated" Support prompt guided me to the point where it said "Please disconnect all HDMI devices except the Beam from your TV. Unplug your TV from power for 1 minute. Plug your TV back in and test with a TV program."
I did this an the TV switched on and went direct to ARC Audio to the Sonos Amp!.
I switched the TV off and on again to check, and it still worked.

The trick seemed to be to disconnect all other HDMI inputs from the TV (used the “free-to-air TV input to get program, that test).

Any last comments?

Ken_Griffiths

Ah that’s great news, I’m surprised that GS’s earlier post, where he mentioned the below didn’t resolve it, but the important thing, is that it’s now working.

‘Try disconnecting the Amp from the TV and unplugging the Amp and TV from power for a couple of minutes. Then plug them both back in, make sure CEC is enabled on your TV, and run the TV Setup process. Connect the Amp to the TV when the Sonos app instructs you to.’

I guess it might help the situation, if you are able to switch off HDMI-CEC on your other connected peripherals, but I usually leave those on myself for universal control by the LG’s Magic remote.

Anyhow all is well that ends well. 👍

G

GuitarSuperstar

Lead Maestro

Hi Ken and GS

Thank you both for your support.

Here is a happy outcome:

The SONOS "automated" Support prompt guided me to the point where it said "Please disconnect all HDMI devices except the Beam from your TV. Unplug your TV from power for 1 minute. Plug your TV back in and test with a TV program."
I did this an the TV switched on and went direct to ARC Audio to the Sonos Amp!.
I switched the TV off and on again to check, and it still worked.

The trick seemed to be to disconnect all other HDMI inputs from the TV (used the “free-to-air TV input to get program, that test).

Any last comments?

That’s why the first question I asked was:

“Do you have any other devices connected to the TV?”

I assumed since you didn’t answer the question that the answer was “no”. That’s why it’s bad to make assumptions. Glad you got it working.

"Receive with simplicity everything that happens to you." - Rashi

I

I.am.HagarAuthor

Contributor I

Thank you for the guidance - it is really appreciated.

One last note:

The TV still did not return automaticall and reliably to ARC audio to the Sonos Amp after switching off and later on again.

Had to do the “remove HDMI 1” (Foxtel Pay-TV Box) and re-start, to get it active, each time.

Then, I found this setting in the LG CX TV Menu “Quick Start”.

Switching this on seems to let the TV connect to the Sonos every time.

I will track the results over next few days...

Sign up

Login to the community