Chosen Solution
Hi. I’ve bought a used Samsung UN65NU6900FXZC ZA02 LED TV. It worked fine for some time and then developed, at first, a single very thin (1 pixel) vertical stable blue line, from top to bottom, close to the left edge of the screen. Now it’s multiple colored 1-pixel lines on the left. If I disconnect external sources (xbox) and cold discharge the TV, I can bring the number of lines back to 2. The lines in that case disappear at 15-20 minutes per line. Does it sound like a processing error? Does it make sense to open the cover up and check the cables and/or replace the boards? Thanks!
@polaro those lines (1pixel wide) are usually caused by failing TAB connections. Attached images are for demonstration purpose only If you have trouble identifying the ribbon and Tab just post some more images of what you see on the top of your LCD panel. It should look something like the images I attached.
Take a really close look at those TAB connections (check for corrosion or other visible damage) and apply some gentle pressure on them. You will most likely see that the lines either change or disappear That is incredible difficult to fix but sometimes some downward pressure applied y some adhesive tape etc. can make them go away, for a while at least.
