Zvonko Vasiľ

Hello, I have my LG TV for 4-5 years already and it started flickering out out nowhere, it didn´t fall or anything. I saw other guys having similar issue but they opened the cover and tempered with the mother board or something and I really don´t want to do that. I tried soft reset from settings but it didn´t help. Here is the video Do you know, what to do, please?