I just wanted to connect my old Samsung syncmaster monitor vertically. So decided to remove the stand. It was not easy as thinking. Searched over web and what found first is a video which you can see below
This was not the one I wanted, my monitor Samsung Syncmaster had a diferent stand. After searching a bit more I found this video
This video shows How to repair a broken leg. Yes you may have to open the monitor to remove the stand completely. I just removed the stand and you can see the photo of that below
It is not easy by the way. So if you want to wall mount your monitor or repair the stand/leg of your monitor these videos may help you.