Nokia 103 Lcd Light Ways Jumpers
Nokia 103 Light Ic Solution Problem Ways Repair
Here is the Nokia 103 solution for display backlight LED not working problem and shows a dark or black screen display. The solution below shows the connection line paths and certain components that holds for the LCD backlight LED to work.
Just refer to the solution below, this may help in solving backlight white LED problem on Nokia 103 after you confirmed that the LCD screen is okay or already tried replacing it.
Nokia 103 Display Light Jumper Ways
After already confirmed that the LCD is working, or already tried replacing it but still it shows a dark screen display and the backlight LED is not working, you may then check the highlighted components above. You may start cleaning the LCD pin connector, re-solder it if necessary.
Check the battery supply voltage(VBAT) across the inductor coil, check also the inductor coil for possible open circuit. Check/replace the 33 ohms resistor near the LED driver IC and the filter coil near the transistor.