My macbook air logic board has shown one spot of oxide damage, as seen in pictures. Upon inspecting the area a small what i think is a capacitor fell off. Macbook also had 3 beep ram issue. I am looking to fix the board as the damage is small, i have a soldering iron etc. does anyone have any idea of how to deal with this situation/what part is damaged?
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Hi,
The affected part of the board is the DRAM power supply. To replace them you need to remove them with heatgun or soldering iron. Then resolder the new ones with soldering iron. I recommend a youtuber called Louis Rossmann. On this link you have the schamatic and board view.
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do i just have to replace what appears to be C7400 (the small piece) or the U6100 (big one) above it? where are these parts available?
U6100 is a bios chip. While it can be replaced the ME region needs to be fixed including serial / model numbers too. Source: https://boards.rossmanngroup.com/forum/b...
C7400, C7425 and U7400 may need to be replaced.
Damage isn't small as the BIOS chip is probably shorted and needs to be replaced, something I would leave to a reputable macbook board repair shop to do as a replacement bios chip needs to be re-programmed manually for that specific board.
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