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What to Do When the Car Display Screen Doesn't Light Up?

2 Answers

BryceLynn

07/25/25 2:33am

Here are the specific steps to handle a car display screen that doesn't light up: 1. Check whether the power supply to the display screen is normal. If the power supply is abnormal, replace the power supply module. 2. Check whether the cable connection is good. If the connection is poor, promptly inspect the wiring for any loose connections that may cause the central control screen to go black. Reconnect any loose parts properly. 3. Check whether the display screen is damaged. Replace the display screen for testing. If it returns to normal, the display screen is damaged. If the power supply is normal and the cable connection is good, check the video output signal from the motherboard and test by replacing the motherboard.

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McBrooklyn

08/10/25 4:38pm

Buddy, I've encountered the issue of a black car display screen several times. Generally, the most common cause is a blown fuse. Open the fuse box, locate the fuse corresponding to the display system, and try replacing it with a spare or new fuse. If the fuse is fine, check if the wiring connectors are loose or corroded; especially in humid conditions after rain, oxidation at the connectors can easily cause a short circuit. Another trick: turn off the engine, remove the key, wait for 5 minutes, and then restart to see if the software can reboot—it's quite common for in-car entertainment systems to crash. Don't ignore this minor issue; the display screen is crucial for navigation, reverse camera images, and safety alerts. Delaying repairs might damage the entire circuit board, which would be expensive to replace. I recommend avoiding parking in direct sunlight or rain and regularly cleaning the button area with a soft brush to prevent accumulated problems. If I can't fix it myself, I'd take it to a repair shop to check for motherboard issues—safety first, as driving with a black screen can be distracting and dangerous.

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