What's the reason for the car's onboard display screen not lighting up?
2 Answers
The reasons why the car's onboard display screen does not light up are: 1. The DVD experienced lag during operation; 2. Third-party software is incompatible with the system; 3. The screen is damaged; 4. There is an issue with the wiring harness; 5. A crash caused by the IC and motherboard. If it's a hardware issue, you can only drive to a 4S shop for maintenance or go to a repair shop for inspection. Onboard displays are divided into two types: one is a TV placed on buses for viewing, essentially a car TV, and the other is a small-sized onboard display, which generally has two video inputs—one can be connected to a car DVD, and the other to a reversing camera. Some also come with MP5 video playback and Bluetooth functions, serving as a display that can be used on similar moving vehicles, making it convenient for use while the car is in motion.
Last time, the display screen in my car suddenly went black, which gave me a real scare! After checking, I found out it was a blown fuse—located in the fuse box under the steering wheel—so I just replaced the corresponding fuse for the large screen. It could also be due to low battery voltage, preventing the car from starting and leaving the screen without power. Another possibility is a loose cable connection, where the plug isn’t secured tightly in the trunk or center console. Software glitches might be the culprit too, like a system freeze; in that case, try restarting the car or disconnecting the battery’s negative terminal for a few minutes before reconnecting. Safety is key—when the screen is off, navigation and rearview cameras won’t work, so avoid driving in the dark or unfamiliar areas. Pull over and troubleshoot first. As a regular habit, I recommend periodic checks of the electronic system and avoiding long periods of parking to prevent battery drain. These small details can prevent many issues.
