I solved the issue and this is how.
After lot of research and dozens of suggestions I decided to try something simple first.
My Samsung UE39F5500 was connected directly to the Internet, no cables apart from the power.
I opened the back of the TV and made sure everything was properly connected especially the highlighted part on the image. (shows how technical I am).
Solved! Go to Solution.
So mine got picked up for repair today. Previously they just fixed it right there but that's not the case. 7-10 days no TV in the middle of the coronavirus nonsense.
I too have a Samsung TV (UA60JS7200) that the top half of the screen is permanently darker than the rest of the TV. The TV has just turned four years old. R1Law, you mention that if Samsung gets enough complaints they will investigate. What do you recommend as the best method to contact them to lodge a complaint - via email or by calling them?
Interestingly there is an embedded link in the TV menu that goes to Samsung support, they call you back and log that info into their system. Using the link sends the TV data (make, model, etc.). Support is the person that mentioned this strategy. I'd keep posting in this forum, use the support link, and possibly send an email directly to Samsung support via their website (include model and software version).
Have an UE55JU6800 (five years old) and we have had this problem with a shadow in the LOWER PART of the screen intermittently for around six weeks - but for the past week it has become unmovable (we used to be able to switch it off/on etc.).
It fails picture test and there's no s/w update.
It's wall mounted.
Any help appreciated - it's not under warranty.