If you are facing Samsung Galaxy S7 Edge, show black screen while blue notification light is on, then this post will be very useful for you to solve this problem. The solution to the Samsung Galaxy S7 Edge screen problem is given in this post.
In the image above you can see the red green black and yellow lines. These lines show the tracks and parts used in the display of the Samsung Galaxy S7 edge, so once you have checked these parts and made these jumpers you can solve the Samsung Galaxy S7 edge display screen problem Huh.