The modern world is filled with cars that come with a full digital display, touch screens, and several other features. A digital head unit can be extremely convenient, but very frustrating if it randomly stops working. This might happen more often than you think. One of the main reasons this happens is because of a blown fuse. Fuses as said before might sound like a small part to be stressing over. But they are the most common issues that might cause your screen to black out. Another thing that can go wrong with your head unit is a malfunctioning screen. Usually, the screen is a part of the head unit, and changing the display can be very difficult and very expensive. The third and last thing for your display to black out is that there is a problem with the wiring of your audio system.