Hello, My samsung ln82341w has sound problems. Two cable channels have no sound; 1 channel has crackling/static sound; and most of the other channels the sound will go out when the first one or two commercials come on and then comes back on the 3rd commercial and stays on when the program I'm watching comes back on. It's not the cable service b/c these same channels work on my other samsung ln 82341 tvs. i tried un and then re-plugging both cable box and tv, I tried various sound options on the menu but nothing is working. Please help!