Hi my T.V is pretty old, and I mainly use it to play xbox and well recently My tv will randomly shut off BUT I can hear the audio. And the light that tells me it's on is still on. So what can i do to fix it? Or should I just buy a new T.v? And by I can still hear the audio means I still can hear the music or gunfire ( since I play mw3 ) But no picture. and my wires to my xbox are not ripped or broken. any help?