@invisiblebond that looks like a failing source driver. That was apart of the ribbon cables from the LCD to the driver board (part of the LCD display).You could check that ribbon for corrosion, small tears and small burns in that flex. Depending on what you find, IT may need a new panel or just some additional pressure on the ribbon. Once you have it apart, take a couple of pictures and post those with your Question. Hopefully we can provide more insight.