Nokia C1-01 Keypad and LCD Light Problem SolutionNokia C1-01 Keypad and LCD Light Problem SolutionNokia C1-01 Keypad and LCD Light Problem Solution

Here's solution for Nokia C1-01 in troubleshooting or repairing back light failure for both LCD and keypad white LED's. The solution below shows the connection tracks of the Nokia C1-01 light circuit connection. Just analyze how the connection flows and then you may get some hints where to start in troubleshooting.

Here's some hints on how to fix Nokia C1-01 light failure problem:

1) Check the connection between the inductor coil and the VBAT 3.7V line paths.
     If this is open or cut, the LED light is lack of power supply to it. 
2) Check the inductor coil for possible damaged, this holds the current stability of the LED light replace if
    necessary.
3) Check all the connection between the Keypad white LED light and the LCD light connection from in
   between the component where it is being connected.
4. If all the connection were okay, check the transistor and diode. Replace if necessary.
5) If all above the above mention seem already been taken but seems the problem still exists. Check the LCD white light bulb LED. (there also a possibility that the LCDs backlight is damaged)

Nokia C1-01 Keypad and LCD Light Problem Solution	Nokia C1-01 Keypad and LCD Light Problem Solution

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