ASUS X751LD internal monitor black screen

[digitalblade]

Hi,

I've a asus laptop with X751LD rev 2.0 MB.
The laptop screen remain black but if I attach an external monitor on HDMI port I see the bios screen.

I checked power lines on lvds and i found 18.78v also i don't find any obvious problem.. like shorted caps or mosfet on lvds connector area..

there is something that I can check to find the problem?

thank you

[JaroTech]

Re: ASUS X751LD internal monitor black screen

Hi, give me the voltage of all the pins of the screen connector. We'll start with that.

[digitalblade]

Re: ASUS X751LD internal monitor black screen

as first, thank you very much for you support and sorry for the late reply.

I try do my best to solve the problem on my own... following your suggestion, I checked every single pin and after a lot of troubleshooting I discovered that there are some stranges value on pin 10.

As first sight I don't see an oxidation on a trace, so i cleaned up the trace, cleaned the pad (that was almost destroyed!) and soldered a wire to rebuild the track and all start work again!!

Thank you for your suggestion!!

I leave two pictures attached as reference for other peoples that can have this problem in future.

[JaroTech]

Re: ASUS X751LD internal monitor black screen

I'm glad you found the problem.