Why is the car screen not lighting up?
2 Answers
Car screen not lighting up is most likely due to poor line contact, so it is necessary to check whether there is a loose connection in the circuit in time. If there is, it will naturally lead to the black screen of the central control screen. At this time, just connect the loose part properly. It may also be because the power signal line is aging. You can try to replace it with a new one. If the black screen is solved, it means that there is indeed a problem with the power signal line. If the central control screen still does not light up after checking the above two situations, it should be because the screen has been used for too long, resulting in a failure of the power supply module, which not only causes lag, but also the black screen phenomenon in severe cases. It may also be due to defects in circuit design, but problems such as module abnormalities and design defects are beyond your own ability to solve, and you need to go to the repair shop for inspection, repair or direct replacement.
A while ago, the central control screen of my car also went black inexplicably. After struggling for a long time, I finally figured out a few key points. Nowadays, car screens are just like smartphones—80% of black screen issues are power-related. First, check if the cigarette lighter fuse is blown—it's the easiest to replace. If you see a startup screen flash briefly when powering on before it goes black again, it's likely the screen's motherboard that's dead. Another time, I discovered the issue was caused by incorrect wiring of an aftermarket dashcam leading to a short circuit—unplugging it immediately fixed the problem. Software crashes are also common; try holding the power button for ten seconds to force a reboot. If the screen is overheating and emitting a strange odor, cut the power immediately and send it for repair to avoid damaging other circuits. If you really can't diagnose the issue, taking it to a 4S shop to read the fault codes with a diagnostic computer is the most reliable solution.
