Where is the problem when the Haval H6 screen suddenly goes black?

[LaHarrison]

First, check whether the power supply to the display screen is normal. If the power supply is abnormal, replace the power supply module. Then check whether the cable connection is good. If there is a problem, replace the cable. 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 situation remains the same, the power supply is normal, and the cable connection is good, check the video output signal of the motherboard and replace the motherboard for testing. The following is relevant information: How to repair: Most cases of the display not lighting up are due to problems with the main unit. Here is a simple solution: open the case, take a waste brush, remove the memory and graphics card, and carefully brush them. Then use your fingers to wipe the gold fingers of the memory and graphics card. Remove the motherboard battery for discharge and then reinstall it. If it still doesn't light up, observe the color of the display indicator light. If it is yellow, it means there is no signal, and it can basically be determined that the problem is with the main unit. Take the main unit to a nearby repair shop for maintenance. The car's central control screen is not lighting up.