I have a Sonos system consisting of a Connect in one room, a Play 1 in another and two Play 5’s in another. One of the Play 5’s will not work. It turns on and the one light blinks and then remains. The others all work but the system is unable to find the missing product. I have tried a reset but it will not reset. Only a white light flashes and then remains solid. What is wrong and what can I do to regain this Play ?