my 254 lost its audio. I swapped the hdmi cords with a working device and still no sound. I looked and i am set to hdmi audio=pcm. I double checked both portals and both tv and video club. verified the mute button is not on. when i noticed i had lost my sound i reset and as it was re booting it informed me there was an update, which i did hoping it may also resolve the sound issue, however it did not. I also tried changing setting from stereo to mono with no success getting back any sound. am i missing something? does anyone have any ideas or suggestions before i look to my warranty?