What's the reason for the Mazda6 multimedia screen not displaying?

[StParker]

Mazda6 multimedia screen not displaying reasons: Abnormal power supply to the display screen: First, check if the power supply to the display screen is normal. If the power supply is abnormal, replace the power supply module. Display screen damage: Check if the display screen is damaged. Replace the display screen for testing. If it returns to normal, the display screen may be 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. Most cases of the display not lighting up are due to issues with the main unit. If it's rotating, here's a simple solution: open the case, take an old brush (a toothbrush or dust brush will do), remove the memory and graphics card, and carefully brush them. Then, use your fingers to clean the gold fingers of the memory and graphics card.