I just bought this unit about a month ago an just today installed it. All wiring is ran an test correct. I installed the head unit on the console. I put a 3amp fuse in the pos power going to the unit. I was going to power up the unit after everything was finished an the only thing that happens is the screen will come on for a second saying loading, then it will start flickering a line across the screen an flash the loading again about every one to two seconds.. Anyone have any idea what would cause this?