After a full charge, paired phone with blutooth, returned to wifi; turned unit off just to test on/off function and couldn’t get it to turn back on.My wife held the power button for approx. 20 seconds and it returned to life; she said she had had a similar problem with her Oasis tablet…..unsettling to have a brand new product perform like that…
In any case, try the press and hold option if speaker won’t power up..
Disappointed so far; have 7 other Sonos speakers with no problems..