Re: HDMI ARC Soundbar reports
I have a Bose soundbar 700, LG B8 TV, PS4 Pro and a set top box for recording.
I was having problems like many have described things would turn on and off in sync initially then after a day they would lose sync and sometimes lose audio. Turning the power off to everything temporarily resolves this.
I have managed to identify the issue in my system and it was the PS4, go into "system" on the PlayStation, then "HDMI CONTROL" and make sure this is turned off. This has completely fixed my problem.
I understand people's frustration however in defence of Bose, HDMI CEC always has been very finicky and to a certain degree outside of there control, many devices and many different manufacturers are trying to talk to each other through your HDMI cable and fighting for precedence.
LG TV simplync stays on (TV settings)
Bose Advanced CEC on (in Bose app)
Other devices including things like PS4, Amazon fire can cause conflicts try turning there HDMI CEC or control settings off.
If things have disconnected and no longer talking to each other change the settings as above and before you test to see if it has worked unpower all of your devices and repower them this allows them to establish a new connection with the updated settings.
I feel people may change settings and when it doesn't immediately work dismiss it. If your soundbar has lost sync with your TV, when you are changing settings to try and find the issue you need to change the setting, then power everything off then on again and then see how things work for a few days, this allows them to resync and the hope is that your new settings should stop them from breaking that connection.