I have my LED TV Manta 50LUA120S left in car under sun and high temperature when moving it. Then when I plug in it was showing only colors- RED; GREEN, BLUE; WHITE,... I have checked online and many say when to burning mode - when you simply just exit burn/shipping mode with holding power button (etc...) but this didn't work.
I searched further and opened also the back of electronic components so I have following questions:
Which of the electronic ship board might be the root case and how with to check from my end (mybe with some multimeter)?
Might be the board circled in RED or in Yellow?

Maybe if this is really the case (LINK YUTUBE video: https://youtu.be/rPOrH3c6JRw?si=Rl7P53lC52Epoh6A) I have found small board part for 20 EUR and bigger board for 50 EUR but want to be sure which might be the root to purchase correctly.
Thanks for help!
I searched further and opened also the back of electronic components so I have following questions:
Which of the electronic ship board might be the root case and how with to check from my end (mybe with some multimeter)?
Might be the board circled in RED or in Yellow?

Maybe if this is really the case (LINK YUTUBE video: https://youtu.be/rPOrH3c6JRw?si=Rl7P53lC52Epoh6A) I have found small board part for 20 EUR and bigger board for 50 EUR but want to be sure which might be the root to purchase correctly.
Thanks for help!