In the summer, my camera became exposed to water. The camera eventually dried out and it took pictures like normal. I haven't dropped it or done anything drastic to it since then. A couple of weeks ago, I took a picture and I changed the setting (i.e scenery to movie) and the screen turned completely white. It's been white ever since. My warranty has expired and I can't afford to buy a new camera or have a professional repair it. How can I fix my camera manually? My camera is a DSC-W220 by the way.