My camera has started showing a bunch of random, constantly changing horizontal lines . . . sort of like a "staticky" image. It shows on the built-in screen and on the photos taken. I've attached a cropped example, taken in low light with no flash for emphasis. Does anyone know if there's anything I can do to bring it back to normal without spending money? I'm fine with buying another camera (it's about time any way,) but I can at least give this one away if I can fix this problem. Thanks!