JBL xtreme 3 goes into standby mode or something like that too quickly when running on battery power and mains how do you switch the AP on and off plus something really strange when I have it connected to the mains by cable and bluetooth or jack switch on and off only briefly when watching films on pause I can't even get to the toilet quickly one that when I come back on the sound no longer works you always have to press the volume down button depending on the time it takes sometimes 3-seconds but also sometimes just under 1 minute and very rarely I have to switch the sound on and off until the sound comes back but in my opinion it is not in standby mode.