I recently bought a Hitachi Hi-Def 50 inch Projection/LCD TV model #50v500 I love it to death but I found one problem... when I use the internal speakers as my center channel for my surround sound, the screen flickers sometimes. When I hook it up to my computer, all sound coming out of it causes flicker. When hooked up to my Xbox, only loud sounds (radio chatter on Ghost Recon) cause the problem. It doesn't do it If I set up a seperate center channel speaker, but i love the internal speakers! Help!