I have a Panasonic 43 inch LCD television that the sound recently stopped working. It's the kind with the wider base and a big square lamp inside it. The problem appears to be somewhere between the HDMI port and the sound board inside the tv. The HMDI cable transmits video with no problem, but no sound will go across it. The tv is at least 5 years old and I'm trying to figure out if it's worth trying to get it repaired and sell it or just take it to the county recycling center.