Chosen Solution
My element tv that I have had for a god 2-3 years has developed like 5 or so black lines that make the more of the top of the screen darker and this is on all inputs this appeared randomly and not a consumer mistake
DerpFace, Sounds like you may have a thermal crack on the internal screen if you do not see any crack on the outside. It could have also been caused by something accidentally hitting it or when moving it. It doesn’t take much to damage an LCD. good luck