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right quarter of screen is darker than the rest. Update (07/30/2017) It’s samsung un60d7000vfxza Update (07/31/2017) took back off and its lit up all around..any idea?

MrNYCinc most likely bad LED backlight strip. Give us a proper model number for your TV and post some images of what your screen shows. Post those images to your question using this guide Update (08/02/2017) “took back off and its lit up all around” are you saying the once you took the back off your set, all the LED’s lit up? If so, it is a bad connection of the LED strip.

Replace the LED strips . it’s a common problem on Samsungs