Well I am still in the same state of not working!
Tried the QS+ set to off - turn TV on using BR and opens, no sound out of the speakers. Tried the AV reset next, still no effect TV turns on and no sound out of the speakers. Tried the CEC next still no sound. Only way to resolve it was to turn it off, wait for a few minutes and turn it back on, sound restored! Takes about 30 - 40 minutes of messing about each evening just to turn a TV on!
There is really something not right - now i am not so sure it is software, wondering if B&O changed a board design due to component shortage and there is an embedded issue.
Not really a very good experience - Thanks B&O!