My GH3 has been working flawlessly since I got it last December. However, the other day, the rear screen stopped working. I've tried resetting the camera but it makes no difference. The screen went bad, but later that night, it went back to normal again. The next morning, it was bad again and has been ever since. It's like the video signal going to the screen is messed up. The EVF is working fine, just the rear screen is dead. The screen backlight comes on, but there is no image. Just a couple of flickering horizontal lines. This happened suddenly and without warning. It was working fine one minute, then looked like this the next.