Screen illumination acting weird.
the screen illumination on my MacBook is not working.
What happens: the screen is black, as if it's not working at all.
But if I decrease the light intensity (with the dedicated keys on the keypad) until 0/16 (equals to shut down the screen), then increase to 1/16, the screen goes back to life for a few seconds, then goes off again. This procedure works repeatedly, so I guess the LCD screen is still working.
I have done a lot of research on the site before asking, and narrowed the possible causes to:
- bad inverter cable
- bad inverter board
- fault on the logic board (rarer)
What do you suggest me to do?
I forgot to mention that pluggin an external monitor works perfectly, so I guess the video card has no problems.
Thanks in advance!
Is this a good question?