Samsung Galaxy S6 G920F Display Light Solution Ways
https://gsmfixer.blogspot.com/2015/10/samsung-galaxy-s6-g920f-display-light.html
The Diagram given in this post is to solve Samsung Galaxy S6 G920F Display Light Not working problem and this problem is caused by IC problem, Water damage in the board and LCD problem. So first of all remove the water damage and then try to replace the lcd. If the problem is still there then apply this hardware repair diagram for Samsung Galaxy S6 G920F Display Light Jumper Ways.