Chosen Solution
Device: Macbook pro 13” 2.4 Ghz Intel Core 2 Duo a1278 Mid 2010 The laptop works fine on external tft screen and I can see the desktop with a flashlight on the native screen. Tried a different LVDS cable and the problem persists. The logic board doesn’t show any sign of burnt components apart from a diagonal stripe on a component that looks like metallic square with cut corners. The link is a photo I took and the component is on the left edge, has a black dot and it’s numbered 330. I’m not sure whether the stripe mark was there before or not. Is this component related to the backlight circuit?
Magicboard photo link: https://ibb.co/fXFrRdz Could this be the issue causing no back light? Thanks in advance
You’ll need to check the backlight fuse F9800 which is located here:
It either has a white dot or the letter P on it. I recommend you review the logic before you replace it as often times when they blow there is an underlining cause!
