dustinmayo

Hello all, I work for a school district and we have one NEC Short Throw projector that has horizontal lines that flash across the screen. These lines only happen when you plug in the PC VIA a Lightning to VGA dongle. If you unplug the dongle the lines go away. The lines are present whether you are charging the laptop or not. I tried to move the laptop around away from the power strip, but the lines were still present. Any help diagnosing this problem would be well appreciated. Dustin Mayo