Chosen Solution
A customer brought in an S8+ today that had previously been dropped. The OLED was damaged. He says that it was working for a while but it randomly stopped displaying the other day. I figured that the screen had just died and proceeded with the repair. I have tried three different screen assemblies on his device and I am still not getting anything. The phone is turning on, OK Google is functioning but I’m not getting a display. I have tried the soft reboot, new battery, prox sensor and charging port as well. Any help would be greatly appreciated. Thanks!
Not sure if you have, because it was not mentioned, but did you test the original screen? There is a possibility that the board is damaged and may not be providing enough power to the LCD itself. In this case you will need a board specialist to determine which one is damaged, soldering is required for this. @refectio may be the guy to provide direction or assistance.
