My Panasonic PT-AE900U projector has started to display vertical lines from top to bottom of the image. They are perfectly symmetrical, about an inch apart from each other. Any clue what this could be? Is this the result of a setting that I can change? I have tried multiple inputs including VGA, HDMI etc, but it still looks the same. I also change a new HDMI cable but is still the same Also is out of focus its bluring, please help me.