Colored vertical lines and black grid lines.
I have a 45” samsung led smart tv part no. un46d6900wf and it recently has black grid lines appear horizontally and vertically. It also has colored lines running only vertically and the colored lines can appear in different locations and change locations. The TV has never been hit and was wall mounted out of reach for all if its life. I Tried re flowing both the main mother board and t-con board by putting it in the oven at 380 degrees Fahrenheit for 10 minutes but it doesn’t seem to have made anything worse or better. any help would be greatly appreciated and im looking too see if it needs a board replacement mabe a chip is failing? I dont think it is the panel because it has never been cracked and it still displays color and a distorted image but im not an expert with led panels.
Is this a good question?