my TV is only 13 months old,
I saw the vertical black shadow line in the interfering TV after this movement for the right side,
after that all the right side is black,
it works on the left side only,
I asked Samsung repair = 450 pounds
because it is not the warranty
what happened after that .....
I have some experience !!!!
I take off everything from TV !!!!
I found 2 strip backlight. One factor and another not working (burning)
I ordered online to get 100 pounds original
Now my TV works perfectly for just £ 100
I now have 3 backlight strips for sale