Macbook blinking screen.. error!

[Rottendk]

my macbook screen has been acting wierd. as if the brightness is lowered and then maxed again, fast!.. but now it starts to turn "all black" as if brightness = 0 !....
this problem is normaly happening when the charger is out..

 

[mad jew]

Very weird. Back everything up and use the Apple Hardware Test that came with the machine to see if it can find anything wrong. What are you doing on the machine when this happens?

 

[pier]

Did anyone find a solution to this problem?

I'm having the same issue....