Replaced LCD no backlight
I followed your guide to replace a Macbook Air display assembly. My model is a A1369.
This is my problem.
LCD works fine because I can see the graphic coming up, although the backlight is not working, I know this by shining a torch over the apple sign on the back of the lid. the LCD is definitely working.
Does this mean Ive blown the backlight fuse? Or is my "new" secondhand reconditioned screen the fault?
My thought process is this...If the fuse was blown then I wouldn't get any power at all to the LCD or backlight, so even the crystal wouldn't work. Correct?
Is this a good question?
Your thought process is wrong. The backlight has a different circuitry then the signal for the images. If your backlight fuse is out, then all you have is no backlight, but still signal to the LCD.