Lights blinking Hi I have the pioneer deh p840mp / p850mp model. Ive replaced the ribbon cable twice because they went bad but now the unit blinks on both display panels and wont make any noise other than a flicking sound as it powers up and down every 2 seconds. But when my car sits in the sun this doesn't happen. I don't get it. Something must get warm and connect right but I've inspected and can't find anything.