So I had recently bought a used MacBook Pro 2016 13 inch Touch Bar from a local seller. After some use I've noticed the speakers sounded a bit funky so I went ahead to open it but noticed that some of the screws were worn down. Upon taking the bottom cover off I immediately noticed that there was a bunch of missing screws and a scratch in the board. While checking for anymore damage I saw some components were missing from the board and went to check a scan of the motherboard and see there seems to be 4 missing capacitors. Now that has me wondering what the affects of them missing could be. This MacBook seems to have these issues so could that be causing them? The screen seems to be a bit dodgy with the colors being overexposed and it seems to flicker when on a white or grey screen. Then the Touch ID seems to not work. It gives me a enrollment error? I checked the ribbon for it and it seems to be perfectly fine and even still stuck down with adhesive. Is there anyway to fix the missing capacitors?
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Resolved Missing components on MacBook Pro Motherboard
- Thread starter JajoDayz
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A common use for capacitors is for decoupling, acting as filters on signal lines. If you are missing such a capacitor signal quality will degrade impacting operation. Check this wiki article, especially transient load decoupling.
en.wikipedia.org
Decoupling capacitor - Wikipedia
Ah okay. Thank you very much! I will look into it.A common use for capacitors is for decoupling, acting as filters on signal lines. If you are missing such a capacitor signal quality will degrade impacting operation. Check this wiki article, especially transient load decoupling.
Decoupling capacitor - Wikipedia
I’d be more concerned on WTH did the seller open it for? Everything is soldered... Water damage? Battery replacement? That logic board is severely damaged. Problem is no one knows the exact specs of those capacitors unless you can get access to another logic board to test and compare it with.
I hope you got an awesome price.....
I hope you got an awesome price.....
Honestly, I've been trying to figure that out myself. I can tell their hand slipped and scratched the board near those capacitors. It seems like they tried to take the motherboard out so potentially they wanted to replace the keyboard as they're known to become faulty in which it is on this MacBook.