Here’s the LG Optimus L3 E400 hardware solution for LCD Display lighting Problem. This problem may result to show a dark or black screen display for there is no illumination backlight LED on the back of the LCD screen.
Display light / Backlight not working.
Check your phone brightness settings. (This is the only manual solution for this problem)
To fix the dark screen display problem, you may first try to replace or install a new Display screen module, to easily confirm if the LCD’s backlight LED’s were still working or already damaged.
You can also check the LED’s using the multimeter if you can manage without damaging the LCD flex connector.
If the newly installed LCD still shows the same problem and the LED light doesn’t light up, refer to the solution below and locate the highlighted components on the PCB board.
How to Make a Jumper in the Socket Display
Prepare a cable smooth and adjust the length that we will connect its tracks
Heat Tin with solder for attaching fine wires so that it will closely united.
Use a voltage tester to measure the jumper cables.
Tips & Warning
Make sure the jumper cables are connected properly so that it can deliver a good flow.
Make sure that the jumper cables are not connected directly with the other jumper cable.
The only hint of BuntyGSM on how to make a lane jumper socket on the Nokia 111. good luck
LG Optimus L3 E400 LCD Display IC Solution Jumper Problem Ways LCD Display Not Working
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