No picture components compatibility

Thanks for great help.

I have here Asus R556U no picture only fan spins.

I found that display flat cable model doesn’t match x555dl motherboard, so I unplugged the battery and tried VGA monitor with battery and with charger, but again no picture, only cooler spins.

I also found that display flat cable model matches x555uj motherboard.

See the pictures.

I found out so far that notebook housing is R556Ub-XO146T:

Motherboard and battery are match for x555ld

Hdd board and display x555uj

So right now I’m confused.

What motherboard comes originally in this model?

Any help would be appreciated