In fact, there is a clamp inside the bracket, and it can not be pulled out directly. Place the LCD screen face down, preferably in the foam that covers the monitor, and lay it flat on the table. Then press the bracket down, shake it from side to side, and pull it outward so it can be pulled down.
It is easy to remove the base of this model. In fact, every Samsung display base will come with an installation manual, and the reverse order is the disassembly method. How to: Put the monitor flat on the table, hold the upper part with one hand, grasp the bottom with the other hand and pull the base out with a little force. (If a person is not strong enough, you can ask someone to help hold the steady display...
Put the display upside down, the base is up, see a screw with a ring after the middle (no tools, anti-falling off), buckle the ring (of course, with a cross screwdriver) turn counterclockwise a few times, the crystal seat will be taken down, because of the anti-falling function, the screw is not screwed down, as long as it is loosened.