I have a 2006 T&C with 6 disc changer, one rear screen, and 2 headphones. changer was not ejecting disc and was replaced at dealership. Now headphones don't work. Remote works and puts headphone icon appears on dash screen but no sound over the headphones. Dealership suggested my headphones were bad. Replaced with after market IR headphones but still not working. Took back to dealership but they aren't sure what is going on. Anyone know what is going on?