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only_sleeping
Enthusiast II
March 29, 2023

No audio from Sonos Port digital output - "PCM Zero" signal.

  • March 29, 2023
  • 49 replies
  • 3064 views

Hi Folks, my Sonos Port is plugged in to a Lyngdorf amplifier via digital coax and has worked fine since I set it up initially. However, I’m not hearing any sound from the Port now, and the amp says it’s receiving a “PCM Zero” signal - it was fine on Sunday but no sound from any source on via the Port now. Has an update changed something? Any help would be hugely appreciated, thanks!

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    Pinned Reply By Corry P

    Hi @only_sleeping et al

    We now consider this issue fully resolved. If anyone is still experiencing problems, I recommend they get in touch with our technical support team. 

    Thank you for your patience.

    49 replies

    Show previous replies
    svosseller
    Lyricist III
    April 1, 2023

    My Sonos port still has failing SPDIF out but analog works fine. I have build 72.2-39316. Hardware version is 1.29.1.7-2.2. Series ID is A100.

     

    I am happy to submit a diagnostic or provide serial number to Sonos engineering privately if it helps debug. I also could send the unit in to help the cause...

    Ditte
    Ditte
    April 1, 2023

    Hi all, Thanks again for your patience. We're sorry to hear some of you are still experiencing this issue, despite having updated Sonos Port since my last post. If you could please share a diagnostic here in the topic, or in a DM to me, I'll make sure that they get to the engineering team for further investigation. Thank you. 

    svosseller
    Lyricist III
    April 1, 2023

    Diagnostic 213161996

      Ditte
      Ditte
      April 1, 2023

      Diagnostic 213161996

      Hi Svosseller, Thanks for the diagnostic! Could you please check if your amp is back to the "original" settings from before the bug? We fully expect that anyone affected by this may have changed settings, cables etc before the software release yesterday.

      Thank you.

      Gliderman
      Trending Lyricist I
      April 2, 2023

      Hi 

      My diagnostic number is 834409299.

      I have checked the amp and cable by simply removing the coax cable from the Port and plugging into an old Connect (S1 system).  Everything then works as it should.  So it is definately the digital output from the Port that has the problem still.  The amp does detect the Port as the Port boots up (display changes from ‘no input’ to 44.1khz).  But no sound.    Immediatly before the update to build 72.2-39316 the display was ‘not valid’, so the update changed something.  The analogue outputs from the Port still work.

        svosseller
        Lyricist III
        April 2, 2023

        I have switched to/from analog and swapped cables to rule out an amp issue or a cable issue. The problem remains. The sound I get is like digital noise when on the coaxial digital output/input. It worked without issue before the update. Analog still works fine.

        svosseller
        Lyricist III
        April 2, 2023

        I switched to digital and did another diagnostic in case that helps. 133030972

        ilogixaw
        Lyricist II
        April 5, 2023

        Hi, I did figure out a workaround until Sonos properly fix the issue. If you goto the app, and then the Port settings. Goto the sound and then volume limit. It probably is OFF, but set it too 20, or 25. That should fix the issue.

        Obviously this will effect the analog output of the port as well …. so its only a workaround.

         

        ilogixaw
        Lyricist II
        April 5, 2023

        Hi all,

        Thank you for your patience. We've (literally) just deployed a software update that should resolve this issue. Please check for updates in the Sonos App, and once your Port has been updated, the issue should no longer occur (your port will have build 72.2-39316 (Port)). 
        If the issue still occurs, please contact our support team, and we will of course look into it.

        Yes, this fix didn’t work for me. Just have the same issue. Still broken. 

        ilogixaw
        Lyricist II
        April 5, 2023

        Hi all, Thanks again for your patience. We're sorry to hear some of you are still experiencing this issue, despite having updated Sonos Port since my last post. If you could please share a diagnostic here in the topic, or in a DM to me, I'll make sure that they get to the engineering team for further investigation. Thank you. 


        diagnostic number 1122505657

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