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Had a weird failure on a 2018 MacBook Pro logic board last Thursday
The laptop would turn on but had no backlight on the screen. I figured it was the usual backlight circuit, so I started checking the usual parts. After about an hour of poking around, I found a tiny capacitor near the display connector that was reading a dead short. I replaced it with a 0.1uF 0402 from my donor board stash, and the backlight came right back. It's one of those things you don't see every day. Has anyone else run into a shorted cap causing a no-backlight issue on these newer models?
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anthony88311d ago
That little 0.1uF cap is the exact same value I had fail on a 2017 15-inch model back in February. It's crazy how something so tiny can take down the whole backlight, but once you find it the fix is almost too easy. I still keep a strip of those 0402 caps in my kit just for these boards.
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robin7772mo ago
Oh man, I saw a video about that exact thing. Some guy fixed a 2017 model with the same problem, a tiny shorted cap by the display cable. It's wild how such a small part can kill the whole backlight.
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