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my TV has a crack under the screen UN48JU640DFXZA half the screen works and the other is dark. do I have any options.?
outdoortechnology only real option is to replace the display. Odd so that you have 1/2 the screen working. Post an image of what your screen really displays. Use this guide for that Adding images to an existing question it will allow us to see what you see. If you screen needs to be replaced you’ll be running into issues with a. finding a suitable replacement and b. cost. Most often a replacement panel cost you more than a replacement of the TV. You can consider removing all the boards that remain usable and sell hose for a couple of $$$ or try to find a replacement. On the back of the panel is a manufactures label. Use the models number of the display to do a search. It is possible that there are various TV models that use the same panel. You can also check to see if you find a TV the same make/model as yours but one that has different issues. Then harvest the screen from that.
there is two layers to your screen. a protective lens, to keep standard damage from occurring to the LCD, and the LCD itself. This LCD needs to be replaced. most TV repairs are relatively simple if you have a basic understanding of opening modern technology.