Samsung QE60Q60BAU No display

[porfyriadhs]

Hello everyone, I have a Samsung QE50Q6BAU
The TV powers on normally and the backlight turns on, but there is no picture at all (no logo, no OSD, no image).
So far:
Backlight works
No display

I suspect a possible T-CON, panel, or main board issue, but I’m still diagnosing.
Any suggestions on where to start or what to check first?
Thanks in advance.

[porfyriadhs]

[Davi.p]

check the forum for same brand qled porky sets, it's already covered defect (not completely)

[porfyriadhs]

Unfortunately I did anything mentioned at most cases and the problem goes on 😔

[Davi.p]

at least the steps to let you know what's the problem, usually is the screen