Released June 2012, Model A1278. Intel processor with Turbo Boost, Up to 512 MB DDR5 Video RAM

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Capacitors Broke Off, MacBook Still Seems to Work...

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Pictures are of the logic board in a Macbook Pro 13" Mid 2012 with 2.9GHz Intel I7. Two capacitors(?) broke off while I was trying to remove the base of the unibody with a stripped screw. They are located towards the center of the photos. I included multiple angles to help with identification. No systems on the laptop seem to be malfunctioning. I lost one of the two, and am not even sure they are both the same part. I thought about trying to solder them back in place. The laptop is seemly fully functional. I have several questions:

What are the two missing pieces?

Does anything else appear to be missing?

What system should the missing parts be affecting?

Is it safe to continue to use the Macbook without them?

Can I simply try to solder replacement capacitors(?) back into place?

Again, no system seems to be malfunctioning. No errors are present in the Apple Hardware Test and everything appears to be in working order. I cannot find a problem as a result of the missing parts.

Thanks to anyone who takes a look or can lend advice in advance.

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1 Answer

Chosen Solution

@beiksglie both missing parts are 4.7UF 50V 10% ceramic capacitors in a 1206 package.they are part of your 15V boost regulator circuit and function most likely as filtering caps. This answer is only to identify your components.

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Thanks. That definitely gives me a place to start. At least I can get the parts now.


What is the role of that circuit, if you don't mind me asking?


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Kyle Alexander will be eternally grateful.
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