hi guys i need some help. moded my gba sp with an ips v2 screen with pre cut shell. everything working for a day. later on i noticed a faint black line on the left of the screen but would go away after a couple of seconds. now it permenatly there. opened the system. cleaned ribbon cable and replaced and still the same problem. then tryed the original screen which i took out and no black line on that one. pic below