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Contributor I
December 11, 2018
Answered

Loud Short Buzz Coming from Beam after TV is turned off

Just bought a Beam & LG C8 TV, so far they are both working beautifully with the exception of the loud noise I'm getting once I turn the TV off. It's very inconsistent, sometimes it happens 10 - 60 seconds after the TV is turned off other times not at all. I'm connecting the beam through the HDMI ARC port and using the supplied HDMI cable provided by Sonos. This doesn't happen with the built in TV speakers. Anyone experiencing anything similar?
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UbergezzaAnswer
Lyricist II
December 15, 2018
Thanks guys. That was a setting I needed to change so will wait and see if I don’t experience that again. Cheers

30 replies

Contributor III
June 26, 2019
mine just buzzed too, diagnostic report: 1413397937
Lyricist I
July 13, 2019
Same issue with LG tv
when I turn off tv after watch Netflix(in tv app), this issue will happen
Airgetlam
July 13, 2019
Note that in all of the resolved cases of this issue, it has been the TV sending an errant signal to the Sonos.

There are are unresolved issues as well, but so far, there’s been no indication that it is a Sonos issue in terms of either their hardware or software.
Bruce
Contributor I
August 7, 2019
I have the same issue with my LG C8 hooked up to a Sonos AMP. It’s happening at random.
Lyricist I
September 15, 2019
I had the same problem, I fixed my buzz noise by turning off the power down beep or tone associated with turning off my LG TV. since I did that no more buzzing has occurred . The quick reply from Sonos help made me think about the power down beep as they mentioned that some audio data was still being received when turning off TV. Hope this helps
Lyricist II
September 29, 2019
Pogi - I don’t understand exactly how to do it, can you explain it to a slow dude like me? 😂 Thanks! 🙏🏼

My setup: LG C8, Sonos beam and Apple TV 4K.
Lyricist I
September 29, 2019
On your settings for lg tv you have an option to have a tone when your tv is turned on or off ,you have to turn that tone to off, it is the lingering data noise that creates the buzz. Also if you leave Netflix on but turn TV off you will get that buzz to. Sorry but I won’t have TV access for a while, so I can’t get to specific about turning the beep off. Google can help u for turning the on off beep for LG TV. . Hope this helps
Lyricist II
October 1, 2019
Pogi - Thanks a lot, problem solved with closing Netflix on my Apple Tv before turning of the tv. GREAT! Thanks again Pogi! 👍🏼
Contributor I
December 17, 2019

Has anyone had a decent resolution to this?

 

i have an LG c8 and Playbar. Has been intermittently buzzing after turning off. Lasts few seconds. cant turn the simplink off as when I change audio output back to hdmi arc it then turns it back on. When it’s on optical output there is a pretty bad Audio sync issue when using Apple TV or another hdmi source. 
 

any ideas?

 

thanks

Ken_Griffiths
December 17, 2019

Has anyone had a decent resolution to this?

 

i have an LG c8 and Playbar. Has been intermittently buzzing after turning off. Lasts few seconds. cant turn the simplink off as when I change audio output back to hdmi arc it then turns it back on. When it’s on optical output there is a pretty bad Audio sync issue when using Apple TV or another hdmi source. 
 

any ideas?

 

thanks

Perhaps see if changing the HDMI-ARC port sound-out setting from Auto to 'Pass-Thru' In Settings/Sounds resolves the matter. If not, try unplugging other HDMI connected devices (one at a time) to see if the problem disappears.