LCD won't power on

Just have a quick question for anyone else with good repair experience like myself. I got a screen replacement in for an LG G2 the LS980 model and for some reason the LCD won't power on. It is completely seated and everything. The charge port is plugged in correctly, the phone is actually on at the present moment and I know this because the power button is lighting up when pressed and I am getting notifications as well. I am thinking along the lines of the LCD being defective but I am unsure. Any sort of help would be awesome. It was blinking red prior to it turning on though so I thought that little tid bit of information would be good to let you guys know. Thanks!