LCD NO Backlight - Extra Monitor Works FINE - Backlight Randomly Shine

NEED FOR SURE ANSWER IF POSSIBLE : )

My MBO was working just fine had fan noise then then went to sleep mode then when I attempted to wake it up the backlight was fully off i reseted everything sometimes randomly the screen lights up for a few seconds then back off but once in a blue moon.

What can this be? It works with external monitor just fine keyboard lights up and all.

I CAN SEE with a flashlight sideways everything just fine but no backlight.

What can i test / check to see what the issue may be?

THANKS : )