Sony KDL-52NX800 RUNTK4400TPZB CPWBX4400TPZB T-Con Board LCD Controller CTRL. Fits TV Models: Sony KDL-52NX800. The following picture symptoms indicate a bad LCD panel, and NOT a bad T-con board: - One side of the picture is darker than the other - Picture has horizontal line(s) - A dark, cloudy spot spreads across the picture Installing a new T-con board in a panel with one of the defects above may result in damaging the new board.Horizontal lines on the screen are virtually NEVER caused by a bad T-con board. Horizontal lines indicate a defective LCD panel (screen). I believe internet shopping need more patience and communication. The item "Sony KDL-52NX800 RUNTK4400TPZB CPWBX4400TPZB T-Con Board LCD Controller CTRL" is in sale since Tuesday, February 14, 2017. This item is in the category "Consumer Electronics\TV, Video & Home Audio\TV, Video & Audio Parts\TV Boards, Parts & Components". The seller is "e-laptopart" and is located in China. This item can be shipped worldwide.