Loose flexible hinge

Hi have the same problem - started about a year after I got it.
I took the covers off to look at it and there's nothing to adjust. It's simply a very poor design. The weakened spring mentioned in another posting is definitely part of the problem on my unit but because the center hinge is also frozen I cannot get all the covers off to get a good look at it. That makes it a real pain in the *** to get the mechanism apart to get a closer look at it so I just left it. Way to go Samsung.