This solution below shows the Sony Xperia Z2 D6503 LCD display backlight components that holds and control for the LCD screen display backlight to glow. If one of these components may become faulty due to wet or water damaged it will result to LCD’s backlight failure.
You may need to trace the connection line tracks, supply voltages and check some of the backlight LED driver components shown on the solution above. You may start to check the highlighted components for it is more prone to be easily damaged when a short circuit occurred. Check and replace if already found damaged.
Solution for Sony D6503 Not working LCD display backlight LED White Display Problem
Here’s some hints on how to troubleshoot the “Sony Xperia Z2 D6503 LCD display backlight not working problem”.
” Note: ensure that the Lcd is okay or try replacing it before proceeding”
1. Check the LCD pin connector for possible damaged, resolder if necessary.
2. Trace each of the LED + (positive and LED – (negative connection line paths down to the resistors where it is being connected.
3. Check the connected resistor, replace if found damaged.
Check the pin connector assembly and ensure to clean it as well.
Check the display filter resistors including the LCD supply voltage and trace the connection tracks to the LCD pin connector. Replace the damaged resistor or mind to reconnect if there is an open line paths.
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Sony Xperia Z2 D6503 LCD Display Light IC Solution Jumper Problem Ways LCD Display Light Not Working
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