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


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?


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I am experiencing the same issue, however i just replaced the inverter, and my i sight and my keyboard led is working just fine, this is becoming very frustrating... not sure where to go from here



are you sure about the connectors/wires?

are you sure your left IO board produces correct voltage?


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