So tonight all connectivity to the soundbar failed.  Just switched back to the TV's speakers whilst I was watching and nothing I do will make sound emanate from the soundbar again - if I switch the TV to "Audio System" I just get silence.

I've tried every combination of power cycling both the TV and soundbar and even a full factory reset of the TV to no avail.

Just submitted a support ticket to Sony but frankly I've had enough.  I love the image quality of this set but I've had problem after problem with it and it's infernal Android OS.  I want it fixed pronto or replaced with something that's fit for purpose.