820-00164-a pp1v2_s3 short

[Yoel Ren]

hi this came in with liquid damage , fan still spin, water got around ram chip, pp1v2_s3 is shorted around 14 ohm ,
there's gunk and junk below u2600 and a few broken traces, after u2600 lifted, pp1v2_s3 resistant rise to around 350 ohm, is it good value, should I replace the chip from donor then ?

 

[2informaticos]

Get same chip code, doesn't matter from which board.

 

[Yoel Ren]

edit : it was a u2500, not u2600.
well, i tried turning the macbook on without u2500 just to see the behaviour of the macbook, only fan spin but no boot
i tried reball u2500manually by tapping with solder, after installing the u2500, still same behaviour..
should i get at least a beep beep sound or what with/without u2500 ?
I have pp1v2_s3 and pp1v8_s3.
Do i nees to rebuild ALL the traces even if there’s a same line with good traces?

 

[2informaticos]

You must be sure all traces are good, untill chip pads.
Also check the resistors connected to the chip.