Chosen Solution

My Samsung ue43j5500ak smart tv suddenly started developing vertical colour line on the bottom half of the screen. If there is still image displaying slowly the lines will change colour and form elongated outlines depending of the objects on the screen. Did anyone had such an issue like that? What could be causing it? I have already cleaned the boards inside, unplugged and plugged all connectors, but issue still remains.

@ikafta could be a bad main board as well as a bad LCD driver board (part of the panel). Check to see if you have this error with all inputs (HDMI, Component, Coax etc.) Remove the back cover from your TV and double check all ribbon cables. Focus on main board and t-con board cables. Remove the cables clean and inspect the ends, then reinsert. I’d be changing the main board first. Get it from somewhere that has a good return policy since this could be the panel.