Hi there,

a friend asked me to take a look at his laptop as it was out of warranty. it got some liquid damage. when i popped open the unit it had some corrosion and residue which all cleaned up nicely using alcohol and a hog hair brush.

i found a damaged component. from tracing the components it looks like it is in the power section.

it’s a 13.3 MacBook unibody logic board.

First picture is the top right section as the bottom of the notebook is open, bat and hd bay towards user.

http://s3.photobucket.com/albums/y80/Rom...

this is the regulator/fet/? Ic in question. Top numbers are 1127 (8G4 55A2, lot and date numbers?)

http://s3.photobucket.com/albums/y80/Rom...

any help on this one would be great! i can't seem to find any schematics anywhere, which i find odd for older electronics.....

Thanks,

-Chris