Brightness control on Samsung Tablet does not work, how can I fix it?

[AC Question]

SM-330NU running Android Version 5.1.1

 

[B. Diddy]

Re: Brightness control on Samsung Tablet does not work

Welcome to Android Central! Can you actually access a brightness slider bar, but it doesn't do anything? Or are there no brightness options at all? Are any power saving modes turned on?