Hi guys, I have a really annoying problem during video playback I bought HDMI adapter to connect my Ipone 4s to my Samsung plasma TV. Everything is looking great, and working fine, up to the point of 20 to 30 minutes of watching. Suddenly the screen goes black, i have to change the source from hdmi to av, and again to hdmi, get up from bed and push play again. It is driving me crazy! I have to get up 3 time during any film playback! And there is no difference beetween programs i use, AVplayer, It's playing or Air Video, its always the same. I chcecked in Samsung TV, the power saving option is off, in Iphone the screen blockade is off also. HELP!!!