SONY A8H + Sonos Arc issues

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I'm having an issue with my new Sony A8H and sonos arc. The tv keeps switching the audio output to the TV speakers rather than through the soundbar. The Sonos arc will play sound for 1-5 seconds than revert to the tv speakers. There are times where it works as it should, but I usually have to turn the tv off/on multiple times to get that to happen. The arc works fine when streaming music, and it worked immediately when I plugged it into my 6 year old samsung smart tv upstairs. I have the sonos arc connected to the arc/earc port on the TV. I have tried 2 different HDMI cables (sony suggested the one that came with the arc was the issue, when I switched it out for a spare I had lying around the problem resolved itself for a while, but then returned). The earc setting on the tv is set to auto. Pass through also set to auto. Sony support has had me do power reset, factory reset, changed the RS232c control from HDMI port to serial port. These have in turn fixed the issue, but after the tv is turned off and left overnight, the problem returns. I did spend an hour on phone support with sonos and diagnostics suggest the arc is fine. Has anyone had similar problems? Does anyone have a Sony A8H where the ARC works as it should? At this point, I’m trying to decide whether to exchange the TV for a new A8H or switch to something else like an LG. Thanks for you help and suggestions.

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Corry PAnswer

Sonos Staff

Hi @C_H

Bravia Sync, which is just Sony’s version of CEC (Consumer Electronics Control) is ideally left on. If your TV stops switching to it’s own speakers, and the Arc still works, then continue with this. If you ever get a firmware update for the TV, however, it’s worth trying to turn Bravia Sync back on to see if things have improved.

There could also be a CEC conflict - please try disconnecting all other HDMI devices from your TV and test (with Bravia Sync turned on). If all is well, add one device and test. Repeat this until you have found the problem device and disable CEC on it, rather than on the TV. If there is no option to disable CEC, you can purchase CEC-less adaptors that remove CEC from the HDMI cable before it gets to the TV.

"Common sense is the collection of prejudices acquired by age eighteen." - Albert Einstein

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ElvinSan

Lyricist III

Hi ElvinSan - i am wondering, in the “Audio Output” settings, do you have “Audio system prioritization” enabled? Because if you do, the sound will automatically revert back to the Sonos Arc no matter how many times you try to set it to the tv’s output. From the X950G manual: “If enabled, this automatically switches the audio output to a BRAVIA Sync-compatible audio system when the TV is turned on.”

Hi Jimmy,

I have tried this options already….. no mater “Enable” or “Disable” , it will also switch back to the ARC after few seconds...… weird….

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