'''++@jersey_guy++''' the audio is controlled by the main board (that is where the audio IC is). take a good look at the main board and check for any charred, missing or otherwise damaged component. Post some good pictures of your boards with your question. That way we can see what you see. [guide|21499]
Check if you have any audio while you are using headphones and if you have a sound bar etc. connected you do want to disconnect it as well. Verify for us that your TV is a '''++Sony Bravia KDL-XBR9++'''