I am wondering what component(s) control the display because my phone has been water damaged however the logic board seems to work fine with buzzing when I boot it up and chimes if a unplug the charger but the screen won't even light up. I am convinced the screen is working because I plugged in a different logic board and the screen lights up fine. So my conclusion is that there is something wrong with whatever Controls the display on the logic board. This brings me back to my original question what components on the logic board control the display and is there any way to replace them?