I have the same problem same model tv the red light on the bottom blinks twice before it restarts again if I open the tv with my dad I might need your help 😂
I have this same problem with my TV (same model)
I haven't figured out what LVDS signal is causing that to date. If you can find it, please let me know :).
If you’re unsure of the backlights on Samsungs unplug the main board and plug in the tv
yes, I'm doing this technique as well to check if there's no voltage drop. Good point :).