@nick those are the lines that appear when the connections from your driver boards become disconnected from the LCD panel. They are bonded via a special process and this can't be fixed or minimize unless you have space between the case and the appropriate ribbon cable, to apply some downward pressure. I usually try some fairly rigid thermal material and wedge it between teh case and the corresponding COF. It's a workaround and not a fix but may keep your monitor going for a while longer.