I have a Samsung 19" Inch LED Monitor which has developed slight discoloration spots on the right side and center, visible more on darker colors on the active screen. Could this issue be, due to moisture/dirt build up underneath the screen (on the internal membrane sheets), or due to pixels going bad/dead? I have uploaded a video of the problem..
https://drive.google.com/file/d/1_FJUYiTxax2_NllyGzTzoJMLq7ZIEwPt/view
https://drive.google.com/file/d/1_FJUYiTxax2_NllyGzTzoJMLq7ZIEwPt/view