Quoted from pinchamp:This line is across the top of my DMD all the time. Likely needs to be replaced? Anyone else have this line?
Yep, it's just light permeating through the display cover to the edge. If you lower your height you will see it disappear. I'd say for the average height or lower you can't see it but for say, 5'10 and taller it's visible all the time.