Today I've opened my TV and found some interesting stuff to share with.
My intention to open TV was to solder debug cable but i've found that actually no soldering required (at least in my TV). Moreover there is no need to open TV at all!
The DEBUG/UART/SERIAL/EXLink interface is available at USB port marked as camera (see photo).
You can see full sized photo of main board here
Here is full power cycle log from serial console. If i understood right it is quite verbose compared to ones posted by other people. I've set Console mode to debug from SM, could it be related to verbos output or i am wrong?