Check all the board carefully and if there is some rust carbon or water damage then clean it with electronics cleaner and dry it with hot air or put it under electrical bulb for a few mint so that can be dry. not apply to much heat because and can be harm for your mobile circuit.
Then resold this ic with hot air and if not solve the problem then change this.
for more detail and new tips and tricks about cellphone service problem keep visiting this page we will update cellphone service diagrams timely with new cellphone diagrams.some related post are also given bellow you can read them also for more information about cellphone.
to get new repairing cellphone 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.