Update . I was thinking about this . After I replaced the Q880 STRW6765 part .The tv worked fine hooked up to the analog tv cable in and not the hdmi . When connected to the hdmi the tv will work ok then that's when I get the fire cracker loud sound through the speakers and then the tv shuts down . Would that mean possibly the seine board is bad ? Also the fan on the cable card slot is not running . Should that be running ? Any ideas ? Thanks