Macbook Air keyboard dimly lit after spill...

I spilled liquid on my keyboard a little while ago, and it wasn't the first time. I cleaned everything up, but afterwards I noticed that the left half of my keyboard is lighting up much dimmer in comparison to the right side. Also, sometimes when I plug in my charger, the light won't go on when I attach it or it only works on one side when I flip it over. I'm not good with tech-y things, so it would be impractical for me to take my entire computer apart and it would be easier to have it repaired. I'm just wondering if there's an easy solution to fix this, or what the repair cost would be. I have a MacBook Air (13-inch, Mid 2013). Thanks!

Make sure you have a good solid backup!!
You're lucky your computer is working at all. That state may not last long.
Follow John Galt's advice and have it looked at as soon as you can.

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I have a Macbook Air that had some coffee spilled on the keyboard and as a result the plus/equals key is no longer functioning. Can I use a program like Ukelele to reprogram a different key to be my plus/equals key? Can I program a function key? key

I have a Macbook Air that had some coffee spilled on the keyboard and as a result the plus/equals key is no longer functioning. Can I use a program like Ukelele to re-program another key to do that function? Can I re-program a function key to do this function?

Water + electronics do not mix. Something was damaged insode, and the logic board may be corroding as is.
Take it to a Genius Bar for an evaluation and repair estimate.
This is accidental damage and not covered by warranty.

I would like to know how do I install the brazilian keyboard into macbook air, keyboard with accents (Portuguese Language), I tried so many times how to put into it (Macbook Air). So, thanks for now! I'm waiting for it.

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After you go to system preferences/keyboard/input sources as suggested by sberman, click on the + button and scroll down to Portuguese and select that. Over at the right you will see the choices Brazilian, Brazilian abnt, Portuguese. You might want to add all three to see which you like best.
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Last Friday I spilled a glass of water all over my MacBook Air's keyboard. I jumped up, tipped the laptop over to get as much water off as possible, and dried off the outside. I took it in to Apple immediately and was told it needed so many repairs, that it would cost more than the laptop itself. The guy who looked at my Air was able to turn it on, but the monitor was flickering and had horizontal lines. He took it apart and said the motherboard was fine, but I would need a new logic board, speakers, screen, etc. and said I should be able to get my files off onto an external hard drive. Since it was such a costly repair that I couldn't go for, I didn't get a list of everything that had to be replaced.
When I got it home, I wasn't able to power it on like he could. I let it sit on my dresser all week, open and upside down, to let it dry and allow any extra water to drip out the front. Tired of looking at it, tonight I decided to try one more time and turn it on, and it did! I was able to email myself some important files that I thought I would never see again, so programs and internet worked. The monitor seemed completely fine, the brightness goes up and down normally, the speakers work, and I didn't notice any problems with the keyboard.
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Thanks.

That's great news. I'm not a computer guy but I am very experienced in automotive. The way I see it is even when you took it in and they cleaned it there is no way to get all the water out if it's really bad. The water will cause shorts and all kind of thing will malfunction. Now that the water is dried I would take it in and get it retested. You see, the first test they did on it was not accurate because of the water (causing it to short). Now you can get a good test. Who knows, it might be just fine. I remember drying cars for weeks at a time. One thing to have them look for is any corrosion that might had formed. My guess (only a guess) is that if it's working good now you got really lucky and it will be fine.

Blinking Caps Lock and Num Lock Keys Lit after spilling water Macbook Pro.

What does it mean when the caps lock and Num lock key blink, after spilling liquid on a Macbook Pro? Does this mean that liquid is still present? Also, the white light by the latch was blinking. What does this all mean?

Possible liquid damage.
Immediately disconnect all peripherals, power cord & remove the battery. Turn the computer over with the lid partly open and the hinge facing upward to let the liquid drain. Do not flop it over and lay it flat - you want to separate it from the moisture. Place paper or cloth towels under the machine to sop up the mess.
After the computer disgorges whatever you spilled on it, don't turn it on for 72 hours or longer. You want to computer to dry out completely before turning it on again.
Some users here swear by hairdryers. Blow drying the innards may bake whatever was in the liquid onto delicate computer components. Better to let the computer air dry.
Use plain tepid water to clean out the computer. If you spilled iced beverage more than likely this ice fried the hot motherboard.
Sugary, acidic or milky drinks will almost always cause problems later on as the residue starts slowly corroding the computer innards.
Swab down any sticky parts with distilled water or denatured alcohol.
If none of the above works, you will need to take the computer to a repair shop. Apple Care does not cover liquid or food damage. Believe me, they can tell. So the old "my computer stopped working" line is not going to work.

Mid 2013 macbook air keyboard/trackpad stop responding

I have a mid-2013 13" Macbook Air - 512GB SSD, 8GB RAM - 1.7Ghz i7
I spend a good deal of time working at my home, where I have two external monitors (one via USB, one via the thunderbolt port) and a bluetooth wireless mouse and keyboard. Things are great.
I also go on the road, and when I do, I simply unplug my monitors, close the lid, and go.
Lately, I've had some very odd behavior happen which acts a lot like what is described in the latest 13" Macbook Pro Retina EFI fix: http://www.macrumors.com/2013/11/07/apple-releases-fix-for-13-inch-retina-macboo k-pro-keyboardtrackpad-issues/
Here's what happens....when I'm traveling and away from my bluetooth keyboard/mouse, I will open up my MBA and the trackpad and internal keyboard are unresponsive. I can press the power button and get it to turn off...power it back on and am able to use the keyboard to control various boot options (diagnostics, single-user, safe-mode, recovery model, etc). Booting up full, however, the issue will still exist. Looking at the console log, when this is happening, there are a ton (about 4000 every minute) of the following :
11/1/13 7:45:26.000 PM kernel[0]: Error: AppleHSSPIController::doSPITransfer CRC from device was invalid
11/1/13 7:45:26.000 PM kernel[0]: Error: AppleHSSPIController::InterruptOccurred Failed to transfer interrupt data with Err (0xe00002eb)
Eventually, something happens and things start to work -- I will generally see the following in the console log when it starts working:
11/1/13 7:45:27.000 PM kernel[0]: Apple Internal Keyboard / Trackpad::start Start Succeeded
If I let the machine sit at the unlock screen, eventually a dialog comes up and says "unable to find external bluetooth keyboard/mouse..." It says it will continue to search and will pair with one eventually....it's the same message I would get from my mac mini if it couldn't find the bluetooth keyboard (and has no internal/hardwired keyboard).
When it is happening, I can use "cmd-r" to boot into recovery mode and recovery mode will complain about not having a mouse/trackpad - yet the keyboard seems to work to control what happens at boot time.
I called Apple and got sent to the apple store with a "it sounds like a faulty logic board or a connection that needs soldering". The Apple Store "genius" didn't quite think that was the case and has instead suggested I re-install the operating system. I'm non-plussed by both suggestions. This has happened both before and after Mavericks...
On one of my latest trips, I had a case where I took my laptop out on the plane to try to use it...only to have this issue occur. I landed, got to the hotel, tried again and everything worked fine. Went to dinner - leaving my laptop on the desk plugged in - only to come back to have the keyboard unresponsive.... I've now resorted to traveling with my bluetooth keyboard and mouse "just in case".
Any ideas/thoughts?

Mv2400
I will open up my MBA and the trackpad and internal keyboard are unresponsive.
Do four things to test for fault on this,
reset SMC ,
reset NVRAM,
uncheck "put hard disks to sleep"
and UNPAIR both your bluetooth mouse and keyboard from this Mac that you are using with it currently.
yes, the notion that your logic board is at fault is extremely unlikely, additionally (though far more likely) that your Mavericks OS is corrupt.
RESET SMC
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
RESET NVRAM
Shut down your Mac.
Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.
Lastly, go into SYS PREFERENCES > ENERGY > uncheck "Put hard disks to sleep when possible" in both tabs.
Let your Mac go into sleep or close the lid for a few mins. and reopen and verify that your trackpad and mouse are fine. They should be after this,.........
If not contact Apple for full in shop diagnostic, theyll run a hardware test (unlikely causation) and reinstall the OS, then retest and LASTLY replace the logic board (very unlikely).

Macbook air keyboard issue

So i have a mid 2013 macbook air (running OS X YOSEMITE) , and im having issues with the keyboard:
keys "w" through "o" dont work on the third row from top (and when they do, they lag and stop working after couple mins)
if ur wondering, im writing this on the keyboard viewer
Been like for 3 days, please help so i can avoid repair fees
thanks

Upgrading the OS should have no effect on your keyboard.

Macbook Air keyboard dimly lit after spill...

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