My screen is on but there is no display

So I have a GBA I modded and the IPS worked fine but now I notice that the Display isn’t working properly. I can tell it has power because the backlight is on and the brightness will adjust but there is no actual display. I’m fairly certain at this point that it is not the ribbon because I have repositioned and reseated it multiple times but with the same end effect. Also, I did install a Dehum/Dehiss kit in that it worked fine with before as well.