Iphone 6 plus lcd screen water damage

Hi all,
I have been searching for this but I could not find any useful information.
My question is, how can you fix an iPhone 6 plus lcd display after water damage? is there any component in the screen itself that can be tested and maybe fixed? The screen is in great condition, it just does not display anything and no light. The connectors are in very good condition. Anything I can do to try to fix this water damaged screen? thank you.