2005 Buick Terraza....There is no power to the rear dvd player. I checked the fuses and can't find one that's blown. Is there an inline fuse? Or maybe another fuse that's not labeled clearly? According to the schematics i could find it gets it's power from the radio amplifier, a 20A Fuse, located in the cabin fuse block. Any info would be much appreciated. Thanks for your time.