This Play SL has been added to a network of previous generation devices - play 1’s, a play 5 and a sound bar. Suddenly a few weeks ago the play SL started blasting random music at top volume at 3:30 in the morning and other times of day and night, with no warning or correlation with usage or musical choice. I have had to unplug it and none of the older device exhibit this behavior. Suggestions?!?