Troubleshooting and Repairing a Black Screen on a Samsung Phone

Is your Samsung phone’s screen black? This issue can be caused by several factors, including:

• A dead battery
• A malfunctioning ambient light sensor
• A faulty display
• A damaged motherboard
• Liquid damage

Here are some steps you can take to troubleshoot and repair a black screen on your Samsung phone:

Check the battery

If your phone’s battery is completely dead, it may not be able to power on. Try charging your phone for at least 30 minutes, then try turning it on again.

Check the ambient light sensor

The ambient light sensor is located on the top edge of your phone, next to the front-facing camera. If the ALS is malfunctioning, it may not be able to adjust the screen brightness properly, causing the screen to appear black. To test the ALS, place your phone in a dark room and then in a bright room. If the screen brightness does not change, the ALS may be damaged.

Check the display

If your phone’s display is physically damaged, it may not be able to display anything. Check for any cracks or scratches on the screen. If the screen is damaged, you will need to replace it.

Check the motherboard

The motherboard is the central processing unit of your phone. If any of the components on the motherboard are damaged, it may cause the screen to go black. To test the motherboard, try connecting your phone to a computer using a USB cable. If your phone does not connect to the computer, the motherboard may be damaged.

Check for liquid damage

If your phone has been exposed to liquid, it may be damaged. Check for any signs of water damage, such as corrosion or rust. If your phone has been damaged by liquid, you will need to take it to a professional for repair.

If you have tried all of these steps and your phone’s screen is still black, you may need to take it to a professional for repair.