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A faulty power supply damaged the power in my MacBook air. The MBA was no longer charging with any power supply! A bit of online searching revealed that the MBA has a separate IO sub board, and there was a chance that it was broken and not the whole motherboard.
I used the last of the battery charge to update my backups, then closed the computer down on 19% battery.
After ordering a replacement I/O board, late on Friday night local time here in Australia, a replacement and tools were dispatched from California, and arrived by Tuesday afternoon! I love the magnetic project mat BTW, awesome.
I set up with a bright light, static an magnetic mats and all the tools, with my iPad on the iFixit repair guide...
The repair was straightforward, and completely successful. Closed back up in 30 minutes and had the mac charging!
Actually this is a pretty simple operation, nothing really stands out, except that the spudger is an awesome tool, everyone should have one. I did notice one thing while closing up, making sure the headphone jack lines up the the case hole *before* tightening the retaining screw, and I was able to add a note to the guide.
Brought my Macbook Air late 2010 to Apple to fix the IO board because it would not charge any more and I could see that the contacts were very worn. Apple wanted to charge me $700 and demanded that I change the logic board too, because they said it looked as if is might have water damage. But I knew I just needed the IO and to Ifixit I went. I reviewed the video, it looked easy enough and your site even recommended the tools I would need, so I bought them too.
The repair went just as the video portrayed it and I saved $600 dollars and my mac works and charges perfectly.
Unless you are under warranty, you should try and do it yourself. It is so easy and you save a ton of money.
My I/O board sustained water damage while living in humid environments for the past 4 years, and it had signs of corrosion. The most annoying problem was the intermittent charging. The battery was not in the worst shape (~1200 charge cycles), but since I was opening up the case, I decided to replace it at the same time.
The guide was spot on. No issues at all.
If you have a compressed air canister, it is a good time to clean the dust that accumulates over the years. Take extra care when dealing with the small connections.
My Air had a dead battery and problems with the I/O unit. After five years I thought I should buy another one. A shame, because the Mac worked perfectly.
The new battery and I/O unit arrived in only three days from USA to Spain, and I followed the instructions to repair. No problems. The Mac lives again and I think I will use it five years more.
I had lot of work to find out what model is my Air. A guide or page in FixIt to know the models we have would be useful.