my nikon coolpix p600 camera not works.. if I connect charger green not shown blinking of charging. i replaced with new battery also. but when i press power button camera not starts.. i opened camera & also try hot gun for pcb board to clear moister if any. also out side camera battery shown 3.91V dc current but when i checked in after inserting camera it shows 2.56V dc current.. i tried new one battery. i also charged battery from external charger. but camera not functioning.. first time last 3 years before there motherboard were replaced in warranty period..please give any solution.