Identify A1278 part

[dreds25]

Hello ,
Just after a bit of help really ,
Need to identify a part on a MacBook pro A1278 late 2012 i5
Need a replacement and not sure what it is
Obviously it's the part with the arrow saying change this one ,
Any help would be greatly appreciated


Thank you

Dreds

 

[Willo34]

Hi, I believe it's called the duo filter.....

 

[jgplast]

Hi everybody !
Need your help!
Got recently Macbook pro a1278 820-3115-b EMC 2554 after some stupid service.
Its doesnt turn on at all and some parts are missing. Also chip (7139) near battery burn when plug in battery and magsafe.
I attached two pictures:
first how looks mine apple
and second I found in google and lined around parts seems to be missing now.
COULD YOU HELP ME AND SAY WHAT COMPONENTS ARE MISSING AND THEIR MEASUREMENTS. WOULD BE GREAT IF YOU ADD THAT SCHEMATIC PART ALSO.
Thank you very much, everybody ! You do here a great job.

 

[T5BRICK]

Hi everybody !
Need your help!
Got recently Macbook pro a1278 820-3115-b EMC 2554 after some stupid service.
Its doesnt turn on at all and some parts are missing. Also chip (7139) near battery burn when plug in battery and magsafe.
I attached two pictures:
first how looks mine apple
and second I found in google and lined around parts seems to be missing now.
COULD YOU HELP ME AND SAY WHAT COMPONENTS ARE MISSING AND THEIR MEASUREMENTS. WOULD BE GREAT IF YOU ADD THAT SCHEMATIC PART ALSO.
Thank you very much, everybody ! You do here a great job.

It looks like the logic board is damaged and pads are missing. I'd say the one you have is beyond repair.

 

[jgplast]

Thanks for the answer.
Actually pads are not missing, just contacts damaged, I can repair them and solder new elements. Just let me know what parts are not present here I need to know this 3 elements and schematic, PLEASE.

 

[chipchen]

Try this thread where people are talking about schematics.

https://forums.macrumors.com/thread...backlight-logic-board-question.972699/page-39

 

[hallux]

Thanks for the answer.
Actually pads are not missing, just contacts damaged, I can repair them and solder new elements. Just let me know what parts are not present here I need to know this 3 elements and schematic, PLEASE.

I believe @T5BRICK was correct, there are missing pads. It looks like a layer of the PCB stripped off and the connecting points (or pads) for the upper "chip" in the red box in your second picture are missing. Its likely beyond repair as the other poster noted.