The problem of failure without backlight usually has symptoms such as LCD screen no display, LCD screen is white. Generally, there is no light produced by the LCD screen, but ringing and notification sounds can still be heard.
If your Xiaomi Redmi Note 8 Pro phone is experiencing one of the symptoms described above. There are a number of repair steps you can take that can fix the damage.
1. Perform LCD screen replacement
The first thing to do if encountering such damage is to try a new Xiaomi Redmi Note 8 Pro Full Screen replacement with good condition. This can be applied if your phone has broken or cracked screen due to a certain drop. By trying to replace the LCD screen with a new one, hopefully this damaged problem can be solved.
Xiaomi Redmi Note 8 Pro Backlight Problem to liquid entering the phone. Damaged line and LCD connection on Motherboard. To fix it, you should remove all parts of the phone to conduct a check. Normally, water will corrode and rust on the path and connect and impact the fault line. Therefore, for the repair step immediately clean up corrosion and rust, if there is a broken path, immediately repair it with sugar fishing method.
3. Check and replace internal components
If the condition of the LCD screen and transmission is good but suddenly there is damage to the backlight on your phone. Then it can definitely go wrong in the internal components. The schematic image provided by Le Khuyen Mobile can be a guide for you in trying to repair a broken backlight.
Measure on each component, if there is a defective component, replace the component with the same type and value. Try to check the components of the diode as well as the coil marked on the schematic image. Often the component fails and leads to the appearance of a backlight display.
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Xiaomi