Pioneer vsx 823 k receiver turns screen purple when I switch to bluray. I can still see the picture but its purple and it doesn't do it when I watch sat/cable or play a video game. I can unplug hdmi that runs from tv to receiver n plug it back in and it usually works. Receiver is brand new and I've even changed the hdmi cables and next morning when I go to watch a movie its purple . But no on cable. I've seen couple other people having same problem . any help please?