In this guide, we will guide you to fix Xiaomi Redmi Note 9 Backlight Solution if your phone shows some signs like white screen, dark screen, no display, no LED due to phone dropped in water or bumped.
What is the LCD screen of Xiaomi Redmi Note 9?
The LCD screen is the phone's digital display interface, it is where interactions take place when you switch or touch icons on the screen. When the LCD screen is faulty or damaged, you will not be able to perform operations on the phone as before. The backlight is a series of LEDs (light-emitting diodes) that are logically and appropriately arranged in the display layers to provide light for the LCD screen.
How to fix Xiaomi Redmi Note 9 . backlight
To fix the problem of Xiaomi Redmi Note 9 screen light going dark, you can try to replace the screen with a new one to easily confirm if the LCD backlight LED is still working properly or is damaged. You can also test the LEDs using a multimeter if you're confident in your workmanship without damaging the LED circuit on the baseplate. If the new LCD screen is replaced but the problem is not fixed refer to the solution below and locate the components marked on the mainbroad.
Note: All repair solutions shared here have been tested by at least one member of the VietNamGSM Forum. We are not responsible if your phone has any errors during the repair process.