K>C, Charging can knock can power connector on the device, they are still quite delicate at Samsung. if all of a sudden for no reason, no reason at all, without any apparent reason is cut out of the blue - maybe just a power issue. with more serious problems, often lost the picture, but the device continues to show signs of life. independently verify, to borrow a thread where a known good exercise, if you can not, or will display the same symptom - in service