Has any body been able to decipher the problem? i have a sony bravia 40" and I am able to hear but i can not see the picture on HD channels. Sony support had me buy a signal amplifier and that did not work. It seems to be something wrong with the TV. I tried the TV on another location where my fully functioning samsung is and the problem persisted. Sony support was no help whatsoever. when i tune into a HD channel it says I am receiving in 1080p but again i do not see the picture