Yesterday, the TV offered me the panel refresh. I did the operation but immediately a vertical line appeared in the middle of the screen. The left side of the screen has a slightly different brightness from the right so that you apparently notice a dividing line. I redid another refresh panel without solving.
Is there anything I can do or should I call the assistance? Sony changes the TV for this problem?
Before the refresh the panel was perfect.

I ask help

https://www.dropbox.com/s/yqz09knsmgqfk9z/20181125_095228.jpg?dl=0

https://www.dropbox.com/s/v5ja35vuav9hxem/20181125_095712.mp4?dl=0