MBP display, keyboard backlight and camera issue I have a mid 2009 MBP which was heating up way to fast because of the fan; then I bought a new one and changed it. I also applied a new thermal grease. Plugged all the cables, tightened all the screws, reset SMC, reset NVRAM and turned on.

The heat is gone and its running perfectly now, but:


the display started showing some "blurry ghosts" at the bottom of the screen which won't show if I take a screenshot, so I took a photo that you can see below.





the keyboard backlight isn't turning on. I tried to unplug and plug the cable over and over again, but nothing happened.
the camera isn't working at all. All I see is a black screen.



Is there anything I can do to fix any of these issues?
You most likely caused damage to your MacBook Pro's screen, video cable, and or keyboard cable.

I did a bit of research and found a very similar condition to the picture you provided (see below) it’s called “stage lighting effect”.  This was posted on the iFixit forum.  The resolution to this problem was a warranty replacement.   Being that your MacBook Pro is 6 to 7 years old, this will be an out-of-pocket repair. 



You may be able to repair it by replacing the backlight led, but at this point, it's purely speculative.  My suggestion is to replace the screen rather than risk further damage by attempting to replace the backlight.