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What are the reasons for the Hongqi H5 display screen not lighting up?

2 Answers

VonJulia

07/24/25 5:16am

There are three main reasons why the Hongqi H5 display screen may not light up: abnormal power supply, poor line contact, and display screen damage. The specific reasons for the Hongqi H5 display screen not lighting up are as follows: 1. Abnormal power supply. First, check whether the power supply to the display screen is normal. If the power supply is abnormal, replace the power supply module. 2. Poor line contact. If everything else is fine, check whether the cable connection is good. If there is a problem, replace the cable. 3. Display screen damage. 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 issue persists, with normal power supply and good cable contact, check the video output signal of the motherboard and replace the motherboard for testing.

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DeJulian

08/11/25 12:55am

I've helped my neighbor with this issue before. His Hongqi H5 screen going black was really frustrating. I went over with a multimeter and first checked the fuses, found the dashboard fuse was blown. After replacing it, the screen came back to life immediately. However, more often it's a loose connection issue, especially after driving on bumpy roads when plugs can come loose. You'll need to remove the center console and reseat the wiring harness properly. One time a fellow car enthusiast in our group chat mentioned their screen froze, but holding down the volume knob for 10 seconds to force a reboot fixed it. If the main unit's motherboard gets water damage or chips burn out, it's more serious - you'd have to replace the entire head unit module, and I've heard dealerships charge 3-4 thousand for that. Last time when I was modifying my dashcam wiring, I messed with the cables and the screen wouldn't turn on - turned out I'd broken a clip during wiring which caused poor contact.

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