The back of the TV is held in place by many small Phillips head screws. Most of these are around the edges but there are also some by the power input and media inputs. Make sure to keep these screws in a safe place!

Per Dave Watson's comment, as you remove all of the screws in the back that at the bottom of the TV, there are two components that you have to unscrew and remove: the WIFI and blue tooth modules. The blue tooth module has a clip at the top that must be pushed down so you can remove it. The WIFI pops right off.