Darken the room. Very dark. Turn tv on. Press menu button. Get flashlight and shine at screen. If you can make out the menu barely. It's the back light gone. Is it plasma or lcd.
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Use a high speed HDMI cable form the TV to the sound bar. HDMI cables carry sound as well as picture signals. Refer to your TV's user manual http://www.hdtvsolutions.com/pdf/52527-62528.pdf
and the Samsung product support page http://www.samsung.com/us/support/owners/product/HW-F450/ZA for assistance
Tried push the FOCUS buton on the remote or tried convergence aligment,R,G,B colors lines don't lines up,picture have colors shadows or 3D pictures?The tv have a convergence pronlems,it dead.The tv convergence board is dead.Try website like Tvrepairworld.com to buy a whole convergence board for the replacement.The AKAI/SAMSUNG tvs are using the same convergence board.
OK, I don't have a 360, but are you sure the audio cable is connected, in the correct jack, and pushed all the way in? Sometimes it looks like the jacks are all the way in, but they are not. Thus, no audio. You could also try using Component 2 if that is an option on the TV. Maybe Component 1 ports are bad. Hope this helps.
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