I made a photoshop mockup with stuck pixels on top screen. It was supposed to be and I took it with me there.
I'll just use my words haha, mine is on the bottom screen.
it's blue when displaying black or very dark colors. Hard to see if it's displaying bright colors.
I'm actually second guessing myself if a repair is really worth it. Since this particular N3DSXL has a solid hinge and the two screens are uniform in terms of color temperature. Decisions decisions decisions.
I'll dump my history with new 3ds xls.
1st red one: TN panel, solid hinge, top screen is way to yellow compared to the bottom
2nd black one: IPS, really loose hinge. Top screen is literally blue when displaying whites.
3rd black one : TN, solid hinge, uniform color temperature and stuck pixel on bottom screen.
I am almost convinced that no n3dsxls are perfect