Macbook pro a1278 bad pico fuse

[aftonr]

Hello, I'm needing some help identifying a fuse on a logic board for a macbook pro A1278 13.3.
This board had water spilt on it and was oxidized by the time they gave it to me to work on, I cleaned it with Isopropyl alcohol and dried it out it fired up with minor problems with the keyboard and battery not charging so I plan on replacing the keyboard, but in further inspection of the logic board I saw a smd fuse that had some discoloration near the plugin for the battery but there are no markings on the fuse can anyone tell me how to identify the rating for this fuse? I circled the fuse in the attached picture as well as the plug in for the battery and marked them accordingly any help would be greatly appreciated.
also I did check continuity on the fuse it tested good but the discoloration is concerning.
Thanks in advance for the help!

[b700029]

Re: Macbook pro a1278 bad pico fuse

Apple likes painting their PCBs to get rid of the part labels

I'm not sure if this is your board, but you can try using this schematic as reference:
http://yunfile.com/file/jjxqgls1988/df746bd5/

[aftonr]

Re: Macbook pro a1278 bad pico fuse

thanks for the link I'll check it out and see if it matches up.

[momaka]

Re: Macbook pro a1278 bad pico fuse

The small component next to the fuse looks like a ceramic cap. If that's what it is, check to make sure it's not shorted.

Also, I'm not sure if the fuse you marked is a fuse. It doesn't help that there aren't any marks on the board either (*curses Apple*). The green component above it is a fuse, though - that would be a resettable polyfuse. Make sure that one is good.

[aftonr]

Re: Macbook pro a1278 bad pico fuse

thanks for the help I checked the fuse and the ceramic cap and both tested good.

[speedypro]

Re: Macbook pro a1278 bad pico fuse

thanks for the help I checked the fuse and the ceramic cap and both tested good.

Can you tell me the value of the cap, next to that fuse? Mine is damaged.