Mid 2009 Model A1278 / 2.26 or 2.53 GHz Core 2 Duo processor EMC 2326

865 Questions View all

Need help identify component on logic board that burnt


I have a MacBook Pro 13" Mid 2009 A1278 with a K24 Logic Board

I need help to identify the blown component in the picture.

Anyone have an idea?

Block Image


Block Image


Thanks a lot!


oh great, thanks for the answer!

meanwhile i found another possible problem.

looks like there is a component missing? what do you think?

Block Image


Block Image


Answered! View the answer I have this problem too

Is this a good question?

Score 1
Add a comment

Free shipping on all orders over $100 or containing a Pro Tech Toolkit!

Browse Our Store

1 Answer

Chosen Solution

Tom Shoemer, that is reference designator L3404 with the description of FERR-120-OHM-1.5A in a 0402 package. It is a Ferrite Chip Bead and Murata Part number is BLM15EG121SN1D. The part is available at places like this. Hope this helps, good luck.


This is the response to your updated question. The item 'missing' is reference designator C6301. It is a 2.2UF 20% 10V X5R capacitor in a 402 package. Check The components marked by the yellow arrows. It is possible that it is just my bad eyesight (no more hawk eye;-) make sure those are still all there. Hope this helps, good luck.

Block Image

further Update

Reference designator C6313 820PF 10% 50V Cerm 402 package capacitor

Reference designator C6303 820PF 10% 50V Cerm 402 package

Reference designator R6211 39ohm 5% 1/16W 402 package

Block Image

Was this answer helpful?

Score 2


Yes, the lower two components, that are marked with the lower two yellow arrows in the picture above, are missing, too.

And those are not the only ones. I found many more blank solder contacts.

How is that posible that there are so many components missing?

And what are the components for the two lower yellow arrows?

I bought this broken macbook pro as a just for fun project, but with so many possible missing components i think is a dead project.


Since you do not know the history of the board, it may be that someone used the parts to repair another computer; hard to say. So far, your parts are not very expensive and it looks like the solder pads are all in good condition. Since you bought it as a project, it is your call if you want to continue to try to resurrect it or to discard it. All a question of economics:-)


Thanks a lot for the description of the missing items.

Do you have a close up picture of that board in high resolution so that i can check what item is missing and which one not?

Thank you!


Sorry, I do not have an image. How about you post a couple of images and see if we can help you with it. Or you can email them to me. My email address is in my profile that you can access by clicking on my avatar:-)


Add a comment

Add your answer

Tom Shoemer will be eternally grateful.
View Statistics:

Past 24 Hours: 1

Past 7 Days: 4

Past 30 Days: 8

All Time: 539