Chosen Solution
At first my tv was just left with a black screen plus sound, but pic came up after 10 min, but a dark shade on the upper side. Then after a few days the same thing happened, I just hit the tv on a few places and boom the pic came back! now the upper side got perfect light but its shady on the down side. Thought a back light was broken but it can’t be as it changes place . what would be reason?
@anna3 corroded cable or cold solder joint. It might help if you post some good pictures of what your screen shows as well as your boards etc. with the back cover removed. Attach those to your QUESTION. You also need to let us know what exact model your TV is. Adding images to an existing question
