This seems quite a common theme but I can't find help for my specific problem. When I hook my MBP pro up to my Sony TV and play a video full screen, the screen dims. In fact, if I take it out of full screen mode and move the window half way down the screen, it brightens up again, but if I move the window to the top, it dims. It's really annoying and I've tried messing with display and power settings but no help yet. Any ideas? Thanks.