I have three headrests in my H2 that have screens. There is one player in the front console and one player in the front passenger headrest. THAT headrest screen will not power on now. The player still plays fine so I know that at least the player is getting power. Is there something I can look for? Maybe a wire or fuse that I don't know about. How hard is it to remove the screen to either repair it or replace it? Thanks.