Asus K556UQ white display

[tomozaki]

Hi.
I have Asus K556UQ with withe display, i check and i have 3.3V, 19V on screen connector (mb) also on screen i check for this voltages and i have it. I check screen with same laptop and screen is working normaly (it's showing picture), i also change ldvs cable. If i plug HDMI cable in with external monitor, i get normal picture.
I think something is not working on motherboard.
Thank you for help.

[tomozaki]

I fix the problem.

[mcplslg123]

LCDVDD missing?

[tomozaki]

No, it was, burned data signals on screen. I replace the screen and lvds cable.