Samsung Q90T LPCM pass-through issues

[Chefboiardee]

I have a Q90T TV and I'm p****d off.  I bought this back in 2020 then a year or so later bought Sonos Arc with two Ones as surrounds. I'm playing 4K UHD Blu-Ray discs and realizing that I can't get anything besides stereo PCM. Is there any sort of fix or work around to this? I called Samsung and they were clueless, wanted to send a tech which would cost me non-refundable $120 just to come in the door to diagnose the issue. Is this worth doing? I keep reading about the HD Fury Arcana and seems this would be my best option? This blu-ray has  DTS-HD Master Audio 7.1 and no matter how many settings I adjust I'm only getting stereo PCM. It seems Samsung is trying to swipe this under the rug and not even acknowledge it. Any tips/advice would be appreciated. Thank you

[Ginga_p]

Have you connected via optic cable or hdmi (earc)

[Chefboiardee]

HDMI earc since that's how my sound bar is.

[JordanS]

In your user manual for this model, it states the following on page 32 below: To listen to 5.1 channel audio from an external device, connect the device to the TV via a HDMI cable and connect a 5.1 home theatre system directly to the external device's digital audio output connector. 

This will apply to 7.1 audio as well. It's your Blu-ray player that is handling the DTS audio codecs, so the audio needs sending directly to your soundbar, not the TV. 

https://downloadcenter.samsung.com/content/UM/202404/20240424194407712/NIKDVBEUT-3.4.0_EM_NIKE_EU_EN...

[Chefboiardee]

This doesn't apply to the Sonos system since the sound bar can't be directly connected to the Blu-ray player. The audio must be sent from the Blu-ray player through the Samsung TV to the sound bar. Since Samsung doesn't support DTS or LPCM pass through I'm left with Stereo PCM audio. Also here are multiple examples of people having the same issues I am:

https://eu.community.samsung.com/t5/tv/lpcm-support-qled-2020/m-p/2342824#M54157

https://www.reddit.com/r/Soundbars/comments/klna64/the_lack_of_lpcm_on_samsung_q950tq900t_is/?utm_so...

https://www.reddit.com/r/Soundbars/comments/gur1j3/have_a_samsung_q90t_tv_bought_a_samsung_q850t/?ut...