Question

Playbar TV Sound cutting out on regular basis for past few days.

  • 28 January 2017
  • 56 replies
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56 replies

SHARKB8T, can I discuss this with you for a moment?

The Playbar gets the TV's signal through the optical cable, so there's no "IP address" conflict that would affect it, that I'm aware of. Now if it were the surrounds, then that might be an issue, but I don't think it could be on the Playbar itself, unless it's playing music, and not the TV sound.

Please feel free to correct me if I'm wrong, or don't have all the correct information on that.

For my dollar (and worth every penny you've paid for it), there's only 2 possibilities for cutouts in a Playbar. The first would be a failure of the optical connection, which could manifest itself as a kink in the cable, or not being seated properly at either end. The other possibility would be some particular issue with the data being sent by the TV. That could be a nonconforming data bit in the Dolby Digital stream (like a special command designed for the playbar made by the manufacturer) or simply a non accessible data format like DTS or Dolby Digital Plus (or Atmos, or any other random non supported format).

Well, I'm also discounting a hardware issue like a power supply failing, or the like. I guess I shouldn't, but who knows.

My assumption has been, based on no facts whatsoever, is that many manufacturers have improperly or incompletely implemented the Dolby Digital specifications for data streams, and have had to release updates to their firmware that fixes it. My assumption is that this is why the manufacturers have had to do the updates, and it hasn't been an update by Sonos to fix the problem. I could be wrong, though, as there have been many Sonos updates, but to my recollection none of them have been to "fix" problems with the Playbar. So I'm guessing that Sonos is "to spec" on their interpretation process, and the TV manufacturers have added special commands to make it work better with their own systems, but in the end it doesn't fully comply with the spec.

So, that's my perspective on the whole "Playbar" issue. But as usual, I do agree with your statements in a more general fashion. Assigning reserved IPs, or as some say "static IP addresses" is a smart thing to do no matter what. And posting a diagnostic tends to get much more expert help than people like me who are guessing based on personal (and often flawed) knowledge.

Thanks for letting me disagree with you. And I'd be fascinated in any rebuttal to my assumptions above that you might have. More education is a good thing, I've no particular fear of being wrong. I'm often wrong 🙂
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I have No problem with correction.... particularly when I could easily be incorrect... and in this case, when we are trying to discern what someone means through their writing.... I certainly could...

For me, the point is always being as helpful as possible to people who come here looking for potential solutions... So I wouldn't want to steer the OP in the wrong direction... but I am not sure anything I've said does so.

I totally get your point that the source issue *could* be in the signal or the PlayBar's interpretation of the signal.... I would find it odd that this start following an update when it didn't seem to occur prior to it, but sure... it could obviously...

But, I was simply intending to remove from any potential issue any concern that may originate with communication on the network since the OP say: "I am getting many 1/8 second cut outs of sound from Sonos speakers"... and while he/she says "PlayBar in the title.... The use of "Sonos Speakers" (plural) made me want to suggest that they should consider alleviating any potential source issues up front that might arise from IP issues, and not assume the issue is occurring for the OP only on the PlayBar alone... the OP doesn't say that specifically.

I may have been incorrect in my reading of the original post, but that was my take on their statement and hence the advice...

And we are agreed that the posting of a Diagnostic is something the OP should do... anytime now 🙂 And, of course we'd all love to see more assigned IP addresses... there would be a lot fewer "I have cut outs occurring" posts 🙂
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I get drop outs from 4 different sources independently sent to the Playbar through a switch and when connected individually. I have a Samsung tv, which is known to have "problems" (or has it?) and a Sky box which both get drop outs on live tv. That both exhibit the same symptoms, and correlation is not causality, suggests that either both devices are sending a corrupted signal or there is something in that signal that is causing the problem. The dvd/PVR box drops out on live tv but not on dvd/blu ray or recorded material which suggests that the box data stream is just fine. If the data stream is fine then it suggests that there is something in the signal that causes the problems.

Since the last Sonos update, switching the playbar off at the supply and on again seems to solve the problem for a while which again suggests there is something in the data stream.
Switching off Playbar previously had no effect on the interruptions.

Devices attached have had no new software updates. Sonos has had an update and the problem is ameliorated by the off and on. This suggests that Sonos have tweaked something.

As the system utilises the 5gig wifi band (all units are wired - and I have tried every combination to error check) wifi interference is irrelevant (or negligible). There are no other 5gig wifi operating, according to a couple of wifi analysers I have used, and my wifi is the strongest in the 2.4 band (I have no,problems at all with music).
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That sucks BoredofBalham... I presume you have spoken at length with Sonos staff.... Nothing shows up in diagnostics? just seems remarkably odd.

As I've expressed, it was the OPs comments about "Sonos Speakers" that led me to suggest they they could have IP conflicts... Your circumstance of hardwiring everything is somewhat unique... and I agree that with the 5Ghz for 5.1 that it likley wouldn't be wireless (but of course could be) Given that we haven't heard back from the OP, we may never know if they sorted it out...

Thanks for the response and update!...
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im in the same boat as you binb