I occasionally get a loud buzzing over the audio from Beam connected with HDMI

Diagnostic 1485429350

Ah, thank you @Vosabhoy.

You had said that the only options available for the HDMI/ARC out were PCM or Auto, correct? 

If it is still set to “Auto” does  changing it to PCM make any difference? 

Do you notice any audio issues while your home theater source is playing or only when it is off?

Can you double (triple) check that the HDMI connection itself isn’t loose on either end. 

If you begin playback on a music source, does this audio disturbance persist while playing other sources?

I know this feel like 1,000 questions. I’m trying to pin down why disabling the Quick Start+ didn’t work as it should in your system. 

Hi, the HDMI cable is secure. PCM source sound quality is not as good as auto. I was playing music through the speakers and all seems well so far.

Problem arose again tonight watching television channel. Had to pull the power cable on the beam then reconnect. Convinced it's a problem with the recent update.

When you are watching TV, is this coming from a smart app on your TV or from an external streaming device like a Roku or cable box or game system?

Are you able to look at the audio format settings of any app, service or device to make sure that it is in a format supported by the Beam. 

If your TV audio format is set back to “Auto” make sure that any sources aren’t passing an incompatible audio signal.   

My TV doesn't have the quick start option, its a couple of years old. 

Ive tried restarting the router and the TV, the only thing that seems to get rid of it is power cycling the beam. Interesting that it was almost exactly 24 hours since it last happened. 

I did a couple more diagnostic reports to try and narrow down the issue, one while its buzzing and one after a restart.

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The long and short is that I didn't have any issues before the latest Sonus update. What are Sonus going to do to do about this fault????

Hello @montrano, Thank you for the new reports. 

The audio format from your TV is reading as “silence” in the data, can you double check to see what audio format the TV itself is set to output?

@Vosabhoy, as soon as we can pin down why this is happening, it can be fixed. right now the issue seems to be limited to certain TV manufacturers and systems. believe me, I appreciate the fact that it was working before. Did your TV receive any kind of firmware update around the same time that the Sonos system upgraded?    

No update for my LG tv recently.

Hi,

same problem here - couple years old Samsung TV and Beam connected with ARC - got first humming problem this morning, got 2nd time after couple of hours.

Some details that might help:

Humming is only on right channel while left channel is playing what seams to be correct sound.

When noise started second time tried changing output settings on TV - originally had Dolby Digital and when changed to PCM the hum frequrncy/pitch changed and when switched back to Dolby Digital pitch went back. Toggled this setting couple of times and it was constant behaviour like this.

Hum appeared only when there was sound coming from TV - no hum while in TV menus, only when Plex playback was active in my case. 

Played some audio from Sonos app - no problems, switched back to TV - hum came back.

Reconnected HDMI - silence when discinnected, hum when cinnected back.

Powercycled TV - no change.

Problem went away when powercycled Beam.