Question Laptop black screen but it displays on external monitor

[Simpan31]

Hi

I dont know if i have broken the ribbon cable or whats wrong.
But the laptop screen got black with no backlight working after i plugged it out and in again.
I tried using a flashlight on the screen but i cant see anything.
The GPU fans are working fine.
If i connect it to an external monitor i can view the laptop screen and it reads just fine on the external monitor.
Can it be a damaged ribbon cable or the screen?
Because i find it weird that i can view my laptop screen on my external monitor if the ribbon cable isnt broken.

 

[lvt]

Could be the connector.

Remove the connector and use compressed air to clean it (both screen and motherboard sides), maybe something got stuck between them.