Some reasons why Samsung Galaxy A21s A217 has no backlight
- Phone dropped, screen broken.
- Phone comes into contact with liquid or water.
- Damaged components inside Samsung Galaxy A21s.
Step 1: Replace screen Samsung Galaxy A21s A217
Carry out a screen replacement, if on the Samsung Galaxy A21s A217 phone screen cracks, breaks, this may be the cause of the screen failure.
Step 2: Reinstall the software on your Samsung phone
No backlight on Android phone could be caused by a bug in the phone's operating system, you can reinstall it to solve the problem.
Step 3: Check the LCD screen connection
Try to test the whole connection on the PCB board, especially on the LCD screen connection. It is possible that the connector is corroded or rusted, clean it immediately with liquid alcohol and support it with a brush, so that the socket is clean again and take action when the connection is separated.
Step 4: Check the backlight and display
You can try to check if the path on the Samsung Galaxy A21s A217 Android phone board is damaged.
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| Samsung Galaxy A21s A217 Backlight Solution |
In the schematic image of the path connected to each component, you can check using a multimeter. When damage to the path is encountered, you can jumper for the condition to return to normal.
Step 5: Replace components
With the schematic guide above, you can perform a test of connected components. If there are defective components after checking and measuring with a multimeter. You can make new component replacements of the same value.
Check your phone for any damage carefully, to avoid increased damage and further harm to yourself.