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Battery doesn't charge after Trackpad replacement.

I just replaced the Trackpad on an A1425 and and after assembling it I found out it wouldn't turn on so I connected the power supply. As soon as the MagSafe got connected the indicator light turned green, then amber after a second and the unit booted up without me having to press the power button. On the login screen the battery percentage indicates 1%. Once I logon, the percentage says 0% and "Replace now". I've tried resetting the SMC and NVRAM multiple times and disconnecting the battery connector and taking the Interposer out and putting it back in and connecting the battery connector without any luck.

It is worth noting that the unit got exposed to minor liquid spill, specifically cough syrup. Not aware of the quantity but few of the keyboard buttons are a little sticky but when I started working on the unit, everything worked fine except for the Trackpad, which seemed to occasionally seize to operate. Also there are no visible traces of liquid damage on the logic board itself (considering cough syrup should leave visible trace)

Anything I might be missing here ?

Update (01/17/2018)

@captainsnowball

I appreciate your reply. I do realize that liquid damage to circuit boards can result in an unexpected behaviour in functionality but since the computer has been working fine for months after the spill I still find it a bit suspicious that after I disassemble the unit to replace the Trackpad, this problem arises. I'm still curious to swap the new pad for the old one again to see if the battery will start charging again :) ... I remember one time I was dust cleaning a desktop that had the main logic board totally covered with about 1/4 of an inch of dust that I could just take of with my hands in one piece!..... That board never powered back on :P ... like the dust kept the flow of electrons steady lol!

@danj

Thanks Dan, to be honest I hadn't checked the contacts but did so after reading your comment. Contacts were clean and I even gently cleaned them with rubbing alcohol just in case :) ... still no luck

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arnarthor88, water damage can occur far after the actual spill. the metal corrodes slowly and eventually may cause a short.

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Electronics Water Damage

You must "clean" the mac properly to get rid of the damage.

you also MUST replace the battery!

Li-ion batteries and liquid do not mix well

MacBook Pro 13" Retina Display Early 2013 배터리 교체

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@captainsnowball

I appreciate your reply. I do realize that liquid damage to circuit boards can result in an unexpected behaviour in functionality but since the computer has been working fine for months after the spill I still find it a bit suspicious that after I disassemble the unit to replace the Trackpad, this problem arises. I'm still curious to swap the new pad for the old one again to see if the battery will start charging again

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Double check the MagSafe adapter and its contacts. Review this Apple T/N: Apple Portables: Troubleshooting MagSafe adapters. Are the contacts clean and in good shape?

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Any luck with this ? I have the same issue after changing the trackpad

And I i did not have any water damage. The trackpad was not working properly and hence I replaced it. But now the A1425 does not recognize the battery at all. I am looking at replacing the battery, but was wondering if that would even help … Appreciate your feedback on your situation

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