My D-50 suddenly will not turn on. It happened suddenly, with a nearly full battery. If I take the battery out and put it back in the green light flashes but it still will not turn on. Pressed the reset button and nothing. Removed memory card and deleted all the images and replaced it and it turned on for a split-second and back off again. Any suggestions??? I am scheduled to leave for Damascus, Syria, via Istanbul, for 4 months, in a few weeks, biggest trip of my life, and my camera is crapping out on me Any help???