I've got a problem with my head unit, when i start the car, the radio comes on normally, but after 10 seconds or so, the screen goes on black. The touch still works but you can't see anything anymore, and the sound keeps playing. sometimes when i restart the radio it will work for the remainder of the trip, sometimes it will stop working again after a few seconds. The buttons below the screen also remain working, and stay lit. I hope someone can help me, it's becoming a bit annoying, and this problem doesn't help when i want to install my rear view camera.