Asus ET2012E v2.00 with a display issue

[Glnippon]

Good mornin everyone!


I have a computer all in one Asus ET2012E v2.00 with a display issue. When I put it ON, power LED goes ON, cooling ventilator runs but not nothing on the screen. I had connected to external sceen by HDMI but nothing again.

I'm look for motherboard shematics . Any technical information will be helpful

Thanks you again!

[FriedFred]

You can measure at the ribbon connector of the display, whether there is any voltage to measure.
Can you use a keyboard and the CAPS LOCK LED switch on-and-off?