To solve this problem, you can first try to replace a new LCD module to easily determine whether the LCD LEDs were still busy or not to install. If the newly installed show the same problem, refer to the following solution below and survey a number of components covering the LCD backlight LEDs.
Check and clean the LCD pin connector, for building damage and oxidation. Trace each corresponding LED connection to a component where it is connected, you should also check and replace the damaged components if found. Check and read the LED driver power supply and the filter coil. If this tension is missing the keyboard LEDs will not work. If both LCD and LED keyboard does not work, replace the LED driver IC.
for more detail and new tips and tricks about this problem keep visiting this page we will update it timely with new diagrams.some related post are also given bellow you can read them also for more information.
to get new repairing diagrams and applications with email “Enter your email address for RSS:” at the right side at top and press “subscribe”
Sign up here with your email
Disclaimer.We are not affiliate with cell phone companies like Nokia,Samsung,Sony Ericsson,Lg,Motorolo and some other etc Manufacturers / Vendors .All trademarks are the property of the respective trademark owners.we just provide diagrams for study and repairing purpose.these images are uploaded by website visitors.so we will not be responsible for any loss or damage, including personal injury.for more detail read Terms and Conditions and Privacy and Policies at bottom.