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Contributor I
August 30, 2018
Answered

Beam - TCL (roku) TV sync issues

Hello, I have a beam connected to the following TV via HDMI (ARC):

TCL - 49" Class - LED - 4 Series - 2160p - Smart - 4K UHD TV with HDR Roku TV

I can NOT get the visuals to synch with the audio (ie lip synch issues).

I have (obviously) tried adjusting the delay under the settings for the Beam on the app, but that only makes it worse.

It renders watching tv/movies unwatchable.

Anyone else experiencing this/any ideas?

Thank you.

George
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Ken_Griffiths
September 2, 2018
I'm having the exact same with a TCL 49S405 49-Inch 4K Ultra TV and Sonos Beam connected via ARC HDMI. Have tried changing all the settings in audio for the TV: stereo, Dolby, Dolby + etc etc. Absolutely frustrating that I just purchased both of these products new and the ARC cross-talk is not working. Have tried router reset, unplugging, changing settings. All to no avail - the sound is already playing after the relevant video. When is this going to get fixed?
Rpc12,

The thing is that the Beam TV audio-out is working just fine with so many other brands of TV already.

Quite obviously it's the actual TV that processes the audio and sends it out through the HDMI-ARC port. So it's really whether the TV is doing that in a timely manner for the Beam to then play the audio it receives.

It's perhaps notable that the Beam is already working well with plenty of other TV brands, so this might perhaps be an issue with some TCL TV models and that a firmware/software update maybe required.

I don't think anyone can yet jump to any conclusions, as these things sound like some further investigation maybe required here by both TCL and Sonos.

I doubt anyone can yet say what's causing the lip-sync delay, never mind answering your question of "when is this going to get fixed?' ...simply because these matters are only just now being reported and investigated here.

Presumably some enquiries need to be made with TCL too as it seems other people are reporting similar issues with their TV's and other peripherals... as shown in these few 'example' links below:

https://forums.roku.com/viewtopic.php?t=104465

https://www.oddrealities.com/solving-the-tcl-tv-and-sound-bar-problem/

https://www.oddrealities.com/solving-the-tcl-tv-and-sound-bar-problem/

This one mentions problems with a HDMI control board in the TV...
https://www.bestbuy.com/site/reviews/tcl-49-class-led-4-series-2160p-smart-4k-uhd-tv-with-hdr-roku-tv/5878701

And there appears to be quite a few hits when you search google for 'TCL Roku TV and HDMI-ARC problem'.

25 replies

Lyricist II
January 8, 2019
Just purchased a beam and tried connecting it to my tcl 55 p605 and got a noticeable delay when connected via arc. I was running Xbox one x into hdmi1 and an Apple TV 4K into hdmi2. My frontier fios box ran into my Xbox. HUGE delay in my cable box.

Resorted to changing beam to optical and putting cable box on hdmi3. Seems as if my Xbox apps(movies and tv/amazon prime) stream with no noticeable delay. Apple TV also appears to have no delay. Cable box on the other hand is super noticeable.

Anyone else with tcl 6 series seeing lip sync issues?
Lyricist II
January 8, 2019
Just purchased a beam and tried connecting it to my tcl 55 p605 and got a noticeable delay when connected via arc. I was running Xbox one x into hdmi1 and an Apple TV 4K into hdmi2. My frontier fios box ran into my Xbox. HUGE delay in my cable box.

Resorted to changing beam to optical and putting cable box on hdmi3. Seems as if my Xbox apps(movies and tv/amazon prime) stream with no noticeable delay. Apple TV also appears to have no delay. Cable box on the other hand is super noticeable.

Anyone else with tcl 6 series seeing lip sync issues?


quick update on this. I found the manual online for my STB from Frontier Fios (https://www.manualslib.com/manual/1201839/Arris-Vms1100.html). There is a way to get into the system settings and configure the hdmi port. After trying a bunch of different settings I ended up only outputting stereo sound from cable box in order to fix the lip sync. What is still strange to me is I never had this issue when connecting everything to an old Sony receiver. Not sure why swapping out one piece of audio equipment for a Beam could create such an issue with lip sync.
Contributor I
January 23, 2019
did anyone contact TCL? it's clearly something that lies with them, if the audio output is delayed from the incoming HDMI input they should delay the playback of the video to match the audio out. this needs to be configurable though in case people are using the optical input.

i have solved this issue by taking the optical output from my source (STB in this case) and NOT using the ARC. this works but isn't ideal as now i'm using S/PDIF i have no control of the audio from my STB remote OR the TV remote and need an additional remote (smartphone app), or, use Alexa which i find disruptive in the middle of a movie.
Contributor I
January 23, 2019
FYI, i have contacted TCL australia support - be interesting to see if the a) even reply b) acknowledge the issue c) offer a workaround d) make a statement they will fix it.

over to you TCL.
Lyricist I
February 17, 2019
The fix for me was to completely power off the TCL TV, then power it back on. Do this from the TCL TV's menu > Settings > System > Power > System Restart. Before powering off the TV, I had also set TCL TV Settings > Audio > S/PDIF and ARC to Dolby D. For me, this solution worked when connecting the Beam using either the optical or HDMI ARC connection. I prefer HDMI ARC because the TCL TV displays the Beam's volume level on screen while changing volume using the remote control (which does not happen with the optical connection).