Hi



LG VIP customer service told me today that the new firmware release due last Friday was pulled back. They did not give me a new ETA

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I am also concerned that both SONOS and LG are not responsive to us,their customers. I have spoken to both groups and they admit a problem exists. LG. stated it is a tv firmware issue but does not provide an ETA for a fix. It is a beautiful picture but the lack of quality sound diminishes the experience -I hope they communicate with us and provide a fix

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I set my Verizon STB to PCM( stereo) and all other devices to stereo also- resolved all lip sync issues

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Okay, I am very confused at this point. I was going for a PS4 Pro - LG C7 - Playbase (+Sub + 2 Play: 1) DD5.1 setup, but I guess I will have to deal with this sync issue then.

Would a optical audio splitter like this https://www.amazon.com/Portta-Toslink-Digital-Splitter-Dolby-AC3/dp/B00NBTRC4O/ref=sr_1_8?ie=UTF8&qid=1523445338&sr=8-8&keywords=optical+audio+splitter solve the issue for me?

I set PS4 audio output to optical, connect that directly to the splitter. Do the same thing for the TV. Connect splitter to Playbase. -> No delay issues?



Yes that will solve it. Any device that has an optical out can be plugged into the splitter and then the audio won’t be delayed as it bypasses the TV. It’s only devices that don’t have an optical out such as Apple TV, Nvidia Shield and others that are affected due to the TV not passing the 5.1 signal.

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I honestly think the issues lies inside the PlayBar when Dolby 5.1 is being used, the PlayBar must be doing some type of processing causing an audio delay. Nothing we can do besides never use Dolby 5.1 OR use an HDMI audio extractor so the PlayBar gets the Audio before the TV even processes the image but then you'll have to constantly change the audio delay based on 5.1 or 2ch.

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I just spoke to the LG VIP support representative She indicated that the firmware update to resolve the lip sync issue is scheduled to be released this Friday ( it may take a few weeks to be available to all consumers )- a hopeful development -



Has this worked for anyone? I am currently bypassing my LG TV completely with the sound but can give it a shot if the update has been released.

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Hi,



I just purchased a LG OLED 55 B7V, a Sonos Playbase + Sub + 2x Play one because there was a pretty good offer in a local store. Now I just stumbled over this lip sync issue and it seems that there won't be a solution to this soon. Is it really that bad? I couldn't find any videos where the issue was noticeable. I would like to connect a BR player and a nvidia shield to the TV. What would you guys suggest? Returne the order, wait for a fix, purchase another TV or purchase another 5.1 System? I don't really get the thing about an optical audio splitter mentioned in this thred before. Would be great if somebody could explain it to me.



Thanks and BR



The other option mentioned is to have an optical cable from each media source connected to a splitter which then outputs to the Playbar. (e.g. I output my audio from my Sky Q box to the Playbar rather than from my TV) This will bypass the TV for audio signals to the PlayBar.



Edit



The limitation with this option however is that built in apps on the TV won't work.

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I can confirm that direct optical connection from the STB or Blu Ray player produces no lag and is perfectly in sync for multi channel audio. I’ll update you after the service team come and replace the main board on the TV tomorrow. :(



Why are you bothering with all that??? It’s a software issue!

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100% agree but I don’t think it’s a Sonos issue personally. I think it’s LG. It’s works perfect over optical only. So it’s something to do with the HDMI pass through ability of LG TV’s. I am not sure if a HDMI port would help. We’ll see if anyone reports issues with Beam.

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Hi all,

As predicted by some on here, the main board replacement had no tangible effect on the lip sync issue. The engineer has escalated this with his base, who will advise LG of the outcome. Hopefully another voice to a growing chorus of discontent at the contempt LG are displaying towards their customers.

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As has been stated before, the delay is within the TV, and not the BEAM. And it's not a center channel only, it's the center, left and right in a single enclosure. Where did any of us say the delay wasn't in the TV? From many reports online, it is stated the issue is with the TV Optical port though, so many of us are hoping the Beam having a HDMI port wont suffer from the same problem due to being connected to the TV via ARC.



Also, no-one said the beam is a centre channel only. Just that it would be good to be able to use it that way with 2 other separate sonos speakers as front left and right. This is purely a suggestion to Sonos.

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In my opinion, it is most likely because it is an issue with the LG doing something that is causing the optical signal to be delayed out of the TV, and Sonos has not been able to create a time machine to receive the optical signal before it has been sent.



It's unfortunate that it isn't a Sonos issue, I believe that Sonos would have already fixed it, if it was on their side of things. But they have to play what they receive across the optical cable when they receive it.



I'm anxious to find out if there's a possibility that the BEAM may not suffer this issue when it is connected via HDMI.

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In my opinion, it is most likely because it is an issue with the LG doing something that is causing the optical signal to be delayed out of the TV, and Sonos has not been able to create a time machine to receive the optical signal before it has been sent.



It's unfortunate that it isn't a Sonos issue, I believe that Sonos would have already fixed it, if it was on their side of things. But they have to play what they receive across the optical cable when they receive it.



I'm anxious to find out if there's a possibility that the BEAM may not suffer this issue when it is connected via HDMI.

Early reviews seem good on that front, your earlier post about delay over optical with it were correct, one reviewer said using the optical adapter he couldn't quite get the audio synced up but using the HDMI proved seamless I believe he was using an LG OLED as well.

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Sorry, I was responding to the statement "I just hope the beam doesn't suffer from audio delay,", but you do have a point, assuming that you're connecting with the HDMI cable rather than the optical cable. I would expect that if it was connected with the optical cable, it would have the same delay.



I'd be fascinated to hear from someone who can test this.

I will be testing this tomorrow on my 2016 E6P when my Beam arrives.

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Update. I have retained the set up through optical I describe above and used the hdmi optical adapter that comes with the beam to go from the switcher to the beam.



So in summary Dolby digital with no sync issues on a LG TV acheived by

Running optical from sky Q to optical switcher

Running optical from x box to optical switcher

Running optical from the LG TV to optical switcher



Running optical to hdmi optical adapter that came with the beam and then connected to the beam.



It all works except Alexa will now not control the tv.



Hope this is useful. Regards



Josh

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I solved all lip-sync problems on my 65B7D with the use of a HDMI switch:

https://www.amazon.de/gp/product/B071WVXZKY



For me it's the perfect device for a Playbar surround setup in combination with a LG OLED TV and it gets even better by using also an AppleTV (4K) and a Logitech Harmony. The switch has four HDMI inputs, one HDMI output as well as an optical SPDIF output.



As a result:

- 100% lip-sync out of the box on all devices (set top box, PS4, etc.)

- HDMI ARC is working for the LG TV connected on the output of the switch

- supports 4K @60Hz, HDR, CEC, Dolby Vision

- remote control included, works also with Logitech Harmony (Hub)

- with an Apple TV (4/4K) it adds AirPlay2 without the need to turn on the TV

- with an Apple TV (4/4K) it's possible to convert every audio signal to AC3 5.1 on the fly to get multichannel on the playbar



I'm really surprised that it works so smooth with the help of an affordable device. Most of the HDMI switches don't support HDMI 2.0 (HDCP 2.2), 4K at 60Hz etc. but this one does. It solves all my lip-sync issues which by the way is a prove that this is nothing more but a silly bug on the LG TV, it's not because of some picture optimization thing. It's possible to connect up to four devices plus the TV thanks to HDMI ARC. The sound of apps from the TV are also 100% in sync by using ARC. Make sure to connect it to the HDMI-2 port and activate ARC in the sound settings of the LG TV. For me it's the perfect device for the LG TV. So now I'm using my LG OLED TV basically only as a HDMI display (not Smart but Dumb-TV so to say). :D



By the way, since there are no lip sync issues when using the HDMI-2 ARC output on the LG, I would also expect that there is no lip-sync issue when using a Sonos Beam. The audio delay is only there when using the optical output on the LG TV.



So I am experiencing the same lip sync symptoms as described here and have been playing around with both Sonos and LG settings to try to resolve this to no avail. Minor improvements but still not perfect



I have an LG OLED55B7T and Playbase connected via Optical Audio directly from the TV as well as following devices connected:

- ATV (3rd gen) via HDMI

- Laptop via HDMI



I have no problems with lip sync from LG inbuilt TV tuner and inbuilt apps (YouTube, Netflix, various Catch Up TV apps here in Aus). However there is typically lip sync issues from ATV content and the extent of that depends on the type of audio and which app, with Dolby 5.1 audio source typically having the worst lip sync and PCM generally being fine. Again this is consistent with what is outlined in this thread.

When I tried a friend's Chromecast HD, same lip sync issues occurred as as with ATV.



(As a note I had no lip sync issues using a previous 10 yr old Sony LCD TV with Optical audio out connected to the Playbase with the same setup)



So if the problem is the Optical Audio Out from the LG TV, rather than going the full HDMI 4-1 Switcher Option outlined above would it be simpler to connect the Playbase to the LG TV via an HDMI Audio Extractor as such:



LG OLED --> via HDMI ARC --> HDMI Audio Extractor --> via Optical Audio Cable --> Playbase



Eg. HDMI Audio Extractor

https://www.lindy.com.au/4k-hdmi-audio-extractor-with-hdmi-pass-through?gclid=EAIaIQobChMI2P3Qj_zZ3AIVyqmWCh1EBwObEAQYASABEgLMLvD_BwE



Would this setup essentially solve the lip sync problem, while maintaining the LG TV to carry out as being the HDMI source switch since the Audio coming out of LG TV would be coming out through HDMI ARC not Optical Audio Out?



Or is the issue to completely bypass Audio Processing by the LG TV for any external HDMI sources?

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I had the same severe sound delay/ lip sync issues. No firmware and no settings fixed it. Just had an LG engineer out who replaced the whole motherboard. All my picture settings were gone but also no more sound delays issues when passing through DD 5.1! Not with my Sonos Beam via arc or other devices via optical and PS4 pro!!



Appears LG has an up to date motherboard and I suggest to contact customer services who were quite good in arranging a swift replacement.



Please don’t bother with firmware etc if you have issues as it will most likely be the motherboard. I purchased my C7 55 in October 2017 if someone needs it.

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I explained that all my external sound sources (hdmi arc/ optical) including Sonos devices would have severe audio delay when DD 5.1 is passing through the tv to the devices. You have to mention all the buzz words I guess like AV adjustment not working, bypass not working, firmware fully up to date etc. Or just tell them you are aware that motherboards are being switched as a result of the fault and you want that to happen with yours too. Clearly no firmware update will fix this and it’s a hardware fault. The newer c7s might have the up to date board installed hence some people do not suffer with the delay.

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Hi everyone,



I'm having some audio sync issues with my current setup and am looking for any advice you may have to resolve them.



My current setup:

LG OLED C8 65" TV

Sonos Playbase + Sub + 2 Sonos Ones

Apple TV 4K



When playing Netflix, Hulu, and HBO GO content through Apple TV, sometimes I notice audio sync issues ranging from slight to fairly severe audio delays. The issues seem to be content-specific. When I use the LG built-in Netflix and Hulu apps, there are no audio sync issues. Unfortunately, there is no LG HBO GO app, so I am not able to test that content.



Switching to PCM audio when using the Apple TV resolves the sync issues. The LG Audio Sync feature has no impact on the sync issues (since the audio is delayed and not ahead of the video source).



I have read a few comments about a splitter of some kind. Would someone be able to provide me with a little more detail on that and if it would resolve my issues? I'd really like to continue using the Apple TV if I can.



If others have any additional advice, I'd really appreciate it.



Thanks in advance.

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You can find optical/HDMI splitters of many types on Amazon, just requires a search. And certainly, that would remove the TV from potential issue list. But before I would go that far (since I would consider it a pain to have yet another box that I need to have a remote for to change inputs), I'd suggest looking at the audio settings for the TV set. Make sure that all of the settings are basically turned off. Anything that changes the audio output would add delay. I'm not particularly familiar with the C8, although I'd admit to admiring it, but it's worth double checking that anything in the settings that changes the sound in any way would be a potential issue. And frankly, it's also worth touching base with LG, to see if they have something, like a new beta version of the firmware, etc, that alters the current setup. This issue seems to crop up frequently with both Samsung and LG, and one of the two actually is replacing boards in their TVs due to this issue, although I don't remember which one. I've got a Vizio that's a couple of years old that has zero issue with this kind of thing, but then I've turned off all extra sound processing as well.



I'm 95% confident it's the TV that's causing this issue. Purchasing a splitter might prove that point, albeit as I recall they're somewhere in the $100 area and up. And honestly, I could be wrong....but if so, I'd expect a lot more complaints from other people who purchased TVs from other manufacturers, and I just don't see that at this point. Mostly from LG and Samsung. That might be a reflection of how popular those TVs are, which is why I went with my 95% comment, but still.....

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Interesting.



I'm not terribly familiar with the LG, most of what I know has been gleaned from folks posting here.



While their suggestion to connect the Apple TV directly is a good one, you're right in that there's no simple way to do that. That's where the splitter comes in, though 🙂



I've never heard of an MHL converter, either. A quick look on Amazon suggests it's a device to swap from micro-USB to HDMI, so I'm not sure how that applies here.



What you're looking for is something like this:



https://www.flexson.com/by-sonos-product/sonos-playbase/flexson-3-input-hdmi-switch-audio-converter-for-sonos-playbar



I'm a fan of Flexson, every piece of kit I've purchased from them has been solidly built, although I've not purchased any of their electronic gear. The simple fact is that there are a multitude of similar devices available, pick one that matches your needs.



The audio splitter device should not have any impact on the quality of the audio. It's digital. There's only the potential of lag that you'd be dealing with, in all other respects a zero is a zero, a one is a one. And I've read hundreds of posts in this forum from people who have said that it resolved their issues. I can only assume that the rep that you spoke with was misinformed.



Bruce - thanks for all your help and suggestions so far. I looked back in this thread and saw that some folks recommended "forcing" Dolby 5.1 on the Apple TV as a solution to the lip sync issue.



Doing this has resolved my problem for most of the content I watch. I noticed a slight delay in the audio on an episode of Black Mirror on Netflix, but even that is much improved.



Thanks everyone!

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After purchasing Sonos Playbar and some Sonos One's this summer I have experienced the same lipsync issue with LG OLED 65'' B7V. Connecting the Playbar to Xbox One X optical out and chromecast to the Xbox HDMI input solved the sound issue, however, it introduced the no 4K from Chromecast and completely renders webos useless issue. After beeing in contact with LG now for around 3-4 weeks without getting closer to any solution than when I first reached out to them I have now contacted the sales channel for the TV in paralell to my contact with LG and asked for a resolution on guarantee. I want the issue resolved or exhange the TV to one that works correctly with Dolby Digital 5.1 over toslink. My cheap-o Sony office tv works like a charm with the soundbar and has no issues with DD 5.1 over toslink. It's strange how such a good tv can exist with non-functioning dd 5.1. Current status of this issue is completely unacceptable to me. I could just as well have kept my very old FullHD Panasonic plasma for the same experience with great black levels.

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Having lived with the issue since I bought a Sony XE9005 in January (now an XF9005, swapped by Sony) I can report that the recent Sony firmware update (Sept 18) does appear to solve this if you connect via optical out from the TV to the Playbar.



Previously, if I switched Audio Sync ON, it synced the sound but produced a brightness flash on camera changes, but the update has solved this (although it's not directly addressed in the list of issues from Sony).



For the first time in 9 months I have been able to remove the optical switch I've been using to get my Sky Q box audio and video to sync up.

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I had the same severe sound delay/ lip sync issues. No firmware and no settings fixed it. Just had an LG engineer out who replaced the whole motherboard. All my picture settings were gone but also no more sound delays issues when passing through DD 5.1! Not with my Sonos Beam via arc or other devices via optical and PS4 pro!!



Appears LG has an up to date motherboard and I suggest to contact customer services who were quite good in arranging a swift replacement.



Please don’t bother with firmware etc if you have issues as it will most likely be the motherboard. I purchased my C7 55 in October 2017 if someone needs it.



I had the motherboard now changed for over a week. In that time I tried other devices I previously had delays with: Sonos bars, Xbox one x, PS4 pro, Astro mixamp etc. No more delays over optical or hdmi arc.



I can only repeat myself. If you experience delays with your LG tv it’s most likely the motherboard and you have to be persistent with the LG customers team for a replacement. It took the engineer 10 mins to swap it and all problems are solved. Please don’t waste your time with settings and splitters etc.

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I don't understand that. From my perspective, if the Sonos is working fine in one configuration, then it should be fine in all. So if it's fine in Netflix, from the Sonos perspective there's no change from their side on using your Telenet box. The data comes through the TV. If there's an added delay, it's occurring before the signal gets to the Sonos, not after. Unless in some fashion you're changing the setting on the Sonos using your controller when you switch from Netflix to Telenet?



For all practical purposes, the Sonos is a "dumb" unit. It takes the data presented to it, does a minimum of decoding, and spits it out. It can't tell the difference between the Dolby Digital on Netflix versus the Dolby Digital from Telenet. There has to be something upstream of the Sonos device that's causing the issue. I don't know about your Philips, but several folks with LG models have gotten hardware replaced that has fixed the path of the data that goes through the TV and eliminated the issue. Some LG folks have gotten new firmware / software updates that has rectified the problem. Those two data points lead me to believe that the fault isn't on Sonos, but instead somewhere else. It could be your TV, it could be the Telenet box. And I'd think it would be fairly easy to test where the problem is, assuming there's an optical output on your Telenet box. Just connect the PLAYBAR to that, and see if there's still a lipsync problem. If there is, then I'd bet the problem is with the Telenet box (since the Apple TV is playing fine), but if the lipsync issue goes away, then it is the path through the TV set that is the problem. and you might want to contact Philips to see if there is a software update that you could apply, or if they're aware of an issue.



Frankly, I'd also try a different port to connect the Telenet box to your TV, on the offhand chance there's an issue with one of the HDMI ports, but that's not terribly likely.



At the end of the day, if it were indeed a Sonos issue, we'd see posts from every single TV manufacturer here, on a daily basis. We don't. It's normally Samsung, LG, and now your report on a Philips. And each one of those who have purchased an HDMI splitter with an optical output have reported that the problem goes away, which certainly leads me to believe the issue remains with the TV set's processing of the Digital Optical output.



Sorry to be so argumentative. This certainly isn't your fault. I just don't happen to share your opinion that this is a Sonos issue.

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