Karoo display spontaneously turned off twice on my ride, off for about 1 minute before turning back on

Not on battery saver, screen turned off entirely.  Turn and radar sounds still working (as I was in the middle of a busy intersection on the first one); pulled over to try and deal with it and it turned back on.  Happened again later on the ride.  New Karoo, bought last month.  

I've put in a support ticket, but no response.  

Has this happened to anyone else?  Do I have a bad unit?