water damage no power lights

Question

MacBook Air 11" Mid 2012

1.7 GHz dual-core Intel Processor (Turbo Boost up to 2.6 GHz) with 3 MB shared L3 cache

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craig @craig40625

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crwdns2931729:0crwdne2931729:0: Mha 19, 2014

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water damage no power lights

I have been given a MacBook air by one of my clients as it has had water spilled over it. I have opened it up and cleaned board wise and purchased a power supply as was not given one.

Anyway no power light on the charger so purchased a new battery and mgsafe I/o board yet still no power.

I guess it could be the board that has damage or even keyboard that is not working. Any ideas what to try next?

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craig, if you need to find the power pads, post a good image of your logic board with your question. especially the area around the battery connector will be important. Have you checked the power fuses for continuity yet? Give us the last four digits of your computers serial number or the logic board number, it should start with a 820-XXXX. this will allow us to properly identify your hardware.

crwdns2934271:0Mha 20, 2014crwdnd2934271:0 oldturkey03 crwdne2934271:0

I have not tried continuity yet jumped straight in and cleaned the board and so on. I think I have a multi meter around but would not be what sure where to test on board. Serial is C02LJ2T2T2F5N8

crwdns2934271:0Mha 21, 2014crwdnd2934271:0 craig crwdne2934271:0

Checked your computers serial number and it actually comes back as a Mid-2013. 1.3 GHz Core i5 (I5-4250U)

Intro Date: June 10, 2013 Disc Date: April 29, 2014

Order No: MD711LL/A* Model No: A1465 (EMC 2631)

Subfamily: Mid-2013 Model ID: MacBookAir6,1

Std RAM: 4 GB Std VRAM: 1 GB

Std Storage: 128 GB, 256 GB SSD Std Optical: None*

crwdns2934271:0Mha 21, 2014crwdnd2934271:0 oldturkey03 crwdne2934271:0

Great stuff just to add think in found doc with showing pads but that does not power on macbook so guessing issue with order. Where on the board do I put multi meter to see if current goes through it

crwdns2934271:0Mha 21, 2014crwdnd2934271:0 craig crwdne2934271:0

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craig, if you need to find the power pads, post a good image of your logic board with your question. especially the area around the battery connector will be important. Have you checked the power fuses for continuity yet? Give us the last four digits of your computers serial number or the logic board number, it should start with a 820-XXXX. this will allow us to properly identify your hardware. — oldturkey03
I have not tried continuity yet jumped straight in and cleaned the board and so on. I think I have a multi meter around but would not be what sure where to test on board. Serial is C02LJ2T2T2F5N8 — craig
Checked your computers serial number and it actually comes back as a Mid-2013. 1.3 GHz Core i5 (I5-4250U)

Intro Date: June 10, 2013 Disc Date: April 29, 2014

Order No: MD711LL/A* Model No: A1465 (EMC 2631)

Subfamily: Mid-2013 Model ID: MacBookAir6,1

Std RAM: 4 GB Std VRAM: 1 GB

Std Storage: 128 GB, 256 GB SSD Std Optical: None* — oldturkey03
Great stuff just to add think in found doc with showing pads but that does not power on macbook so guessing issue with order. Where on the board do I put multi meter to see if current goes through it — craig

score 2 · Answer 1 · 2014-08-20T08:34:12-07:00

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originalmachead @originalmachead

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crwdns2931729:0crwdne2931729:0: Mha 20, 2014

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At this point going over the board with a mark one eyeball and a magnifier looking for corrosion, burn marks or swollen component is the only DIY procedure I know.

Of course you had the board out and cleaned/checked both sides.

Sending the board to one of the places on e-bay that advertise board repair is an option.

Also purchasing a replacement logic board is possible. I'd do a cost comparison for either.

BTW if you're putting in a replacement logic board and you do not have the "fastest" or "most upgraded" version of that series boards you can, of course, opt to replace it with the fastest board possible for that model/series.

If this answer is acceptable please remember to return and mark it.

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already costed so it will be near £200 so try some other things first but think might be that

crwdns2934271:0Mha 21, 2014crwdnd2934271:0 craig crwdne2934271:0

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score 1 · Answer 2 · 2014-08-20T10:05:11-07:00

lemerise @lemerise

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crwdns2931729:0crwdne2931729:0: Mha 20, 2014

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Disconnect the keyboard cable, find the two jump start solder pads on your MBA model and trigger them to power the board. If the board power on (fan spin) then the top case (power switch) is probably faulty.

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great advise will try find a detailed doc online and try it later

crwdns2934271:0Mha 21, 2014crwdnd2934271:0 craig crwdne2934271:0

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MacBook Air 11" Mid 2012

water damage no power lights

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