Cooling

On hot summer days there are many people on our river Thur with rubber boats, kayaks, air-beds or bathing. In the morning it was still calm and peaceful.
 
Since Monday my camera is out of order. After taking a picture I heard a click and now it’s dead. I can’t turn the camera on anymore, no more click, no more anything. I’m very irritated because this is already the second Sony Alpha 55 with this problem. Did anybody made the same experiences?