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Sonos Arc isn't compatible with 2020 Panasonic HZ OLED Series with eARC

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I have had my Panasonic HZ1000 since Christmas and updated from a Playbar to an Arc a week ago. No matter what I try I am unable to get the native tv apps to output Dolby sound. PCM in stereo yes no cut out, nothing wrong but as soon as I switch to Dolby output no sound or it is constantly breaking up. I had no problem at all with the playbar outputting 5:1. It wasn’t Atmos but at least I could get some form of surround sound.

I think I have no choice but to return the Arc as it seems its a common fault with all kinds of new TV’s and at £800 I might as well get something else that actually works with my TV!! Really poor from Sonos!!

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johnjo569Author

Avid Contributor I

Here’s my settings when on the native Netfix app:

It does work fine, in full dolby...for about 10 mins then the sound just degrades and breaks up until its no longer possible to hear anything and the Sonos app says no signal.

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johnjo569Author

Avid Contributor I

sorry wrong link

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johnjo569Author

Avid Contributor I

I cant work out how to upload a video so here’s some photos;

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johnjo569Author

Avid Contributor I

These settings are when on the native netflix app. If on ATV you get different settings options through the Tv menu including Mode settings etc. Mine is set to mode 2 when on ATV… it works fine on ATV though its just a native app issue.

Thanks for your help with this mate its much appreciated.

I spoke to a Panasonic engineer today who said the Tv might only be seeing the soundbar as a 2:1 system so its only sending a 2:1 signal but it does send a full dolby signal it kust degrades. I want them to just swap the Tv for a replacement as something isnt right but they wont as they are kind of saying it is a soundbar problem yet sonos say its a Tv problem...and im stuck in the middle with a tv that doesnt work properly!

All these first world issues eh!

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K.Tryggeseth

Trending Lyricist I

I have same settings as you have.

Using wifi or cabled internet for tv? A buffering issue ? poor wifi signal maybe? I know it is a stretch..

i saw your info when using nativ Netflix.

you only run 1080p though you have a 4K tv.

i am watching The Midnight Sky now

Info shows: Video:15.25Mbps / Audio: Atmos

K

K.Tryggeseth

Trending Lyricist I

It’s in Norwegian but you understand i hope :-)

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johnjo569Author

Avid Contributor I

ethernet for Sonos, ATV & TV. New Cat 7 cables as well so they should be able to handle it.

I get approx 50mbp when testing wifi so adequate. I am starting to wonder about the wifi/Internet now though as i have exhausted most other options.

The 1080p was a photo i took thinking i had Atmos on but didnt. Here’s a couple more, thet show Atmos output on TV but no sound is actually being output as Sonos app says no signal. on about my system page. When I first switch the Tv on and am getting sound I get Atmos logo on TV and it says Atmos DD+ on the app but later as it degrades and eventually disappears the TV still says Atmos but the app says No signal. So strange. Even stranger I can still get Youtube, Freeview Play etc no problem even when Neftflix and Prime Video stop working. Might be something to do with there content being output in 2:1 stereo.

These photos show Tv saying Atmos being output but there is no sound coming from sonos arc.