This solution covers for Nokia 5230 nuron with not working keypad light problem. The solution below shows the connection line paths of the keypad LED such as the SEND, MENU and END keypad light LED's.
Just refer to the given solution below and follow some step by step procedure on how to fix the problem.
1. Try to flash update the device firmware first.
2. Check the upper key flex connector for possible damaged, replace if necessary.
3. Check or replace the keypad LED's.
4. Check the keypad pin connector, clean it if necessary.
4. Check the particular filter coil in each keypad LED's. replace if found damaged.
