Here we will share with you the solution to repair Xiaomi Redmi 9A Backlight Ways, low screen light and screen related problems when the phone is dropped in water or dropped on the ground.
The problem of failure without backlight usually has symptoms such as LCD screen no display, LCD screen is white. Or in general, there is no light produced by the LCD screen, but ringing and notification sounds can still be heard.
Solution Xiaomi Redmi 9A lost screen light
To troubleshoot the Xiaomi Redmi 9A screen losing light, you can try to replace or install a new display first to easily confirm whether the LCD backlight LED is still working or has been damaged. You can also test the LEDs using a multimeter if you can be confident without messing up the LCD's connection. If the newly installed LCD screen still shows the same problem and the LED is not lit, refer to the solution below and locate the components marked on the PCB board.
Signs Xiaomi Redmi 9A screen light error
- White screen
- Not displayed
- Low light on screen
- No backlight
If your Xiaomi Redmi 9A phone is experiencing one of the symptoms as described above. There are a few steps you can take to fix the problem.
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| Xiaomi Redmi 9A Backlight Ways |
1. LCD screen replacement
The first thing to do if you encounter such damage is to try to replace the LCD unit with a new one in 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.
2. Check the path and connect LCD
Xiaomi Redmi 9A has no backlight because liquid enters the phone and damages the transmission or LCD connet on the 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 or connection and affect the light circuit. Immediately clean up corrosion and rust, if there is a broken line, repair it by 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, it could definitely be a problem with the internal components. The schematic image that VietNamGSM provides can be a guide for you in trying to repair a broken backlight.
Measure on each component, if there is a defective component, replace it with a component of 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 is damaged and leads to a loss of screen light.
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Xiaomi
