Hey guys, I'm trying to repair a 2013 Retina MBP that has some liquid damage.
This MacBook will turn on and work "normally" but will frequently just go black (but the fans would keep spinning) and will sometimes chime but stay on a black screen. I ran the full diagnostics with ASD 3S155 and everything passed. It will rarely get to the desktop and I can't even get the High Sierra or Sierra installers to finish booting.
So, I took the board out and checked it over for damage, and found a small amount of corrosion on the back. It looks like something might have splashed in through the fan vent as it's right on the edge of the board. The customer said it stopped working and they left it sit for over a year before bringing it in so it's totally dry.
I've checked the board view and these capacitors (?) are C7526 and C7536, which are both PPVIN_S5_HS_COMPUTING_ISNS. If I test them I get 12.5v on both of them, not sure what I should get though.
The rest of the corrosion was mostly on the surface, these were the only things that could have had something under them.
I feel like I should replace these (or at least pull them up and make sure there's no corrosion underneath them). If I were to replace them, how do I know what to look for? I have several donor boards from older 2008-2011 MacBook Pros I could pull parts off of, but other than trying to find something the same size and shape I can't figure out what these are and what to replace them with! The board view doesn't seem to say what they are. Can anyone point me in the right direction of what to look for as far as pulling parts off another board?
Thanks!
Edit: I went ahead and pulled those two caps off the board and they still read 12.5v so I'm thinking they've failed? I guess I just need to know what to put back on there.
This MacBook will turn on and work "normally" but will frequently just go black (but the fans would keep spinning) and will sometimes chime but stay on a black screen. I ran the full diagnostics with ASD 3S155 and everything passed. It will rarely get to the desktop and I can't even get the High Sierra or Sierra installers to finish booting.
So, I took the board out and checked it over for damage, and found a small amount of corrosion on the back. It looks like something might have splashed in through the fan vent as it's right on the edge of the board. The customer said it stopped working and they left it sit for over a year before bringing it in so it's totally dry.
I've checked the board view and these capacitors (?) are C7526 and C7536, which are both PPVIN_S5_HS_COMPUTING_ISNS. If I test them I get 12.5v on both of them, not sure what I should get though.
The rest of the corrosion was mostly on the surface, these were the only things that could have had something under them.
I feel like I should replace these (or at least pull them up and make sure there's no corrosion underneath them). If I were to replace them, how do I know what to look for? I have several donor boards from older 2008-2011 MacBook Pros I could pull parts off of, but other than trying to find something the same size and shape I can't figure out what these are and what to replace them with! The board view doesn't seem to say what they are. Can anyone point me in the right direction of what to look for as far as pulling parts off another board?
Thanks!
Edit: I went ahead and pulled those two caps off the board and they still read 12.5v so I'm thinking they've failed? I guess I just need to know what to put back on there.
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