Samsung Note 4 Black screen pixels

[Android Central Question]

Changed out a bad motherboard on my beloved Note 4. I was very careful taking it apart. Have fixed phones before. But when I put the phone back together, I have most of the screen black with just some of the screen working. Touch screen works fine. Just can t see what I'm doing. Made sure both screen cables are well connected. I do have pictures of the screen.

 

[Gumby1978]

Cables not properly alligned or cable has been damaged.