Asus K450J No light on display

[redbond]

Hello !
I have a Asus K450J with a motherboard SV41JN MB 13320-1 and the problem is that the display don't have light, i tested with another display, i think the motherboard is not supplying the display.
Can someone help me ?

Thank you !

[rediii]

Re: No light on display

display has no backlight, i guess? but if you use a flashlight there is picture on screen? first and easiest step is to check the backlight fuse or 0-ohm resistor near the lcd connector. and never replace a display without disconnecting every power source (no ac adaptor nor battery).

[redbond]

Re: No light on display

No backlight but i can see the windows logo if i use a flashlight !
I will try that man thank you !

[rediii]

Re: No light on display

also you should check the cable. if nothing helps you need to do some measurements.

[mcplslg123]

Re: Asus K450J No light on display

Are you sure mb is posting?? Check whether usb keyboard numlock glows or not on toggling it. I've seen many people here troubleshooting edp connector for no display even when mb is not posting. So make sure its posting. If its posting, we can proceed to troubleshoot.

[rediii]

Re: Asus K450J No light on display

Are you sure mb is posting?? Check whether usb keyboard numlock glows or not on toggling it. I've seen many people here troubleshooting edp connector for no display even when mb is not posting. So make sure its posting. If its posting, we can proceed to troubleshoot.

he can see the windows logo on screen so it should post

[alrieFRED]

Re: Asus K450J No light on display

when dealing this kind of problem, you should check whether the voltage which is the main power rail is present on the LVDS connector,. check for 19v on the pins,. as for 3.3v is good because you have picture but without BL...there should be a FUSE.. check them as well..

[redbond]

Re: Asus K450J No light on display

Can someone help me get the schematics of the motherboard ?

[mon2]

Re: Asus K450J No light on display

Asus schematics are often in the witness protection program but you will have to post this request in the forum above this area. Someone may have access to the sacred files.

Otherwise, post clear and zoomed pics of the area for a review.

Also share any other silk screen markings on the logic board that may help to identify the schematic / boardview files.