Chosen Solution
My tv has a black screen with funky vertical lines Update (07/22/2018) It is a Samsung UN40J5200AF
@jeniwg verify your TV first.You also want to post some pictures to show what your screen dispalys. That way we can see what you see. Use this guide Adding images to an existing question for that. Funky lines can be a panel error, a mainboard error as well as a T-con board error. Let us know if your on screen menu shows clear or if it does not show at all. Update (08/19/2018) This does not look like a T-con board or main board error. To many things going on. Vertical and horizontal lines as well as half lines (only time I have seen those was because of bad memory on the main board).This looks like a panel error. Of course you can open the back of your set and take a lok at all the boards for any obviously damaged components as well as teh wiring. Post some images of what your boards look like withj your question. Maybe we can see something but ultimately it looks like a bad panel.