Keyboard Lights won't turn ON

My keyboard lights suddenly won't turn on. I don't know what the problem is. I tried clicking on the F6 button which will turn the lights on, but this time it appears a NO sign when I clicked on it. Please advice.

Try resetting the NVRAM and SMC. Only reset the SMC if the resetting the NVRAM doesn't work
Reset NVRAM
Resetting the System Management Controller (SMC) - Support - Apple

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MacAIR keyboard light won't light up automatically

MacAIR keyboard light won't light up automatically, although I did tick where it says 'adjust keyboard light in low light' . It's OSX Yosemite 10.10

Good morning Otabek_USA,
If your MacBook Air's keyboard backlighting is not behaving as it should, I would suggest that you reset the computer's System Management Controller. Use the steps in this article -
Intel-based Macs: Resetting the System Management Controller (SMC) - Apple Support
Specifically -
Resetting the SMC on portables with a battery you should not remove on your own
Note: Portable computers that have a battery you should not remove on your own include MacBook Pro (Early 2009) and later, all models of MacBook Air, and MacBook (Late 2009).
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
Thanks for using Apple Support Communities.
Best,
Brett L

Tried charging my 2009 MacBook Pro but the green light won't turn on and now my computer won't turn on (it was working right before I attempted to charge it!) what do I do????? Even tried using another charger I had for it and nothing! Help

Tried charging my 2009 MacBook Pro but the green light won't turn on and now my computer won't turn on (it was working right before I attempted to charge it!) what do I do????? Even tried using another charger I had for it and nothing. No green light. Computer turn on. Now what??? Help!

QUOTE: "No green light. Computer turn on."
What? so were you able to turn on the computer with the new plug? does it give you any other light? amber/orange light?

HP Color Laserjet 3550 - the "attention" light won't turn off

I've tried everything I can think of for weeks but I can't get the "attention" light on my HP Color Laserjet 3550 to turn off. It originally came on when a page on from the manual input tray got stuck maybe 20% of the way in. It was a real easy fix, I pulled the page out and now the "attention" light won't turn off. So I can use the printer at all. I've had this printer about a year. I purchased it used. I've always had the manual feed tray as the default because I use this printer mostly for envelopes and less than 81/2 x11 printing as I have an old workhorse HP 4+ for all my straight 81/2 x 11 printing. I've rebooted. I've unhooked cables and the router. I've opened up the printer and removed the casing (the plastic apparatus on the door) and replaced it. The router is a 2Wire HomePortal 1800HG. I'm just baffled here I've printed so much with the manual feed tray and I've had allot worse things happen that I've had to fix. Now a simple stick like this and the light just wont' go off.

ShlomiL wrote:
HI Vern,
Where did you bought the printer? may you bought it from a different region than your current one?
What is the exact cartridge number of both the black and the tri-color ink cartridge, as well as their product number?
I bought the printyer in the US and the cartridges also came from the US, probably no the same state. Cartdridge # 97, black # 96. I don't see a product number. This is the same # that was in the printer before and the same one I always used. As soon as I pull it out the light goes out, and on again as soon as I install it. This is before the printer even cycles through it's "new cartdridge" routine, if you know what I mean.
thanks for the reply

My macbook pro keyboard backlight won't turn off, even after pressing F5

my macbook pro keyboard backlight won't turn off, even after pressing F5

Try resetting the SMC http://support.apple.com/kb/ht3964

LaserWriter Pro 630 two solid orange lights won't turn green. Put in new toner and test page does print. Any ideas?

LaserWriter Pro 630 two solid orange lights won't turn green. Put in new toner and test page does print. Any ideas?
The warmup stage does not seem to go all the way through its normal startup noises and the printer does not get hot.
Thanks for any help.
Steve

See if this link has some useful info:
LaserWriter Pro 600/630

Im using intel macbook pro 13" and since I'm using the new OSX Lion, the keyboard backlit won't turn off and it's eating up my precious battery. Im always mobile so this is very important. Apple doing something to fix this bug immediately?

Im using intel macbook pro 13" and since I'm using the new OSX Lion, the keyboard backlit won't turn off and it's eating up my precious battery. Im always mobile so this is very important. Apple doing something to fix this bug immediately?

multiplryan wrote:
To be totally honest, about 3 weeks prior I spilled some milk from cereal on the desk and a little bit got onto the battery.
I don't think you have a case.
You can replace the logic board yourself if you are a DIY'er and save some money.

Keyboard lights won't work

so i have a mid-2009 macbook pro: 13-inch, 2.26Ghz.
it was running 2GBs of RAM until this afternoon when i upgraded it myself to 3GBs with a 2GB stick.
i followed the instructions from apple to the absolute letter. however now, my keyboard lights aren't working. but it's funny... usually in direct light, the Fn keys that control the keyboard lights won't allow you to adjust the light, right? but they will for me, except there's no light to adjust.
i couldn't have done something, right?! i mean... i was was super careful and only handled the ram section, after which i blew off some dust and sealed it up again.
please help!

sadly... no success
i followed the instructions exactly; restarting and all. no luck. i did hold the buttons though... is it supposed to be a hold, or a quick "hit"?
i saw your post about a better look, so i opened the back again and took a better picture.
http://i1220.photobucket.com/albums/dd457/jakemoney/IMG4175.jpg?t=1284811603
you can see the connector just below. i tried, again, to make it go in. it fits, but i can't get it to stay. that must be the job of a professional. i can't do anymore now - i'm too involved, and i'm worried i may break more than just some stupid backlighting on my keyboard.
in other news: iphoto does open a lot faster now!
thanks again.

Switched from DSL to cable modem. My Airport light won't turn green. Keeps blinking orange. No wireless now and can't connect to more than one computer! ?????

Switched from DSL to cable modem. My Airport light won't turn green. Keeps blinking orange. No wireless now and can't connect to more than one computer! ?????

Hmmmm.
If you reset the AirPort Extreme by holding in the reset button for 9-10 seconds and then releasing, the AirPort should be back in default settings which would allow mutliple computers to connect to the LAN ports on the AirPort.
Power off the cable modem for now and leave it off at least 15 minutes.
With the AirPort Extreme still powered on, hold in the rest button on the back for 9-10 seconds and release. Allow a full minute for the AirPort Extreme to restart to a slow, blinking abmer light.
Then, power off the AirPort Extreme.
Check to make sure that the Ethernet cable from the modem is connected to the WAN "O" port on the AirPort Extreme.
After the modem has been powered off for at least 15 minutes, power it up and let it run for 5 minutes by itself.
Now, power up the AirPort Exteme and let it run for 2-3 minutes
Open Macintosh HD > Applications > Utilities > AirPort Utility
Connect an Ethernet cable from your Mac to one of the LAN <-> ports on the AirPort Express
Click on the AirPort Exteme, then click Continue to follow the guided setup tp configure the AirPort Extreme. You can use the same wireless network name, password, etc that you used before, or set up a new name and password, etc.

My keyboard lighting won't work. I can't turn the light up on the keyboard?

The keyboard light control (F6 key) won't work...someone help please?

The MacBook uses it's camera to detect the light level in a room and ajust the screen/keyboard brightness appropriately. If you are outside or in a well-lit place, your Mac will sense this and give you a circle and slash sort of symbol when you press F6 to tell you that you are unable to turn the keyboard lights on.
You can disable this feature by going into System Preferences>Keyboard>Uncheck Ajust Keyboard Brightness in Low Light.

Keyboard backlight won't turn on after spill.

Yeah so, me being a complete idiot, I was holding an open bottle of Snapple right next to me while laying down on my bed browsing stuff when I inevitably spill it everywhere. All over my sheets, clothes, and of course my keyboard. I immediately turned it upside down and drained the liquid, also rubbed the entire keyboard with a wet rag and some rubbing alcohol. All the liquid/stickiness is gone and the keys work perfectly fine, albeit the smell is still faintly there. But the real problem is now my backlight won't work. I noticed it flicker while cleaning it but thought it was nothing.
Any general way on how to fix this? And no, I'm not spending a thousand bucks and wait a month for some dudes to take the whole thing apart and wipe out my harddrive again for no reason.

OK, Wow.
Whenever a liquid spill occurs the first thing that has to happen is the laptop should be shut down immediately. All power must be removed as soon as possible. It is especially important that the battery be disconnected and removed.
All affected parts must be removed from the laptop. No attempt should be made to start/restart the computer since this could potentially damage the logic board beyond all repair.
Then all affected parts would be washed in deionized water and blown dry with compressed air. (In a water spill the deionized water is probably not as critical. Depends on the mineral content of the water.).
This is especially true of the large chips on the logic board. Liquid can wick under them and cause havoc for weeks if not months after the incident.
The logic board should be placed in a drying/dehumidifing oven for at least two days. Longer depending on the spill.
The keyboard is a separate matter as described below.
This is how these keyboards work:
This is the contactor array of a MacBook Pro 2011 13" . You're looking at it from back to front. Those round dots are where the silicone rubber "cones" cause the front array to make contact with the back array, telling the computer which key has been pushed. The width of these (I think deposited silver ) traces is about 0.5 mm.
Now you're only looking at the just the front array. You can see that the contact pads are connected in series. A break anywhere in the trace connecting them would cause the "downstream" keys to stop working.
So here you see a site where ionic corrosion occurred. I know that this particular MBP was exposed to water. So I bought it very cheaply. I was able to clean and completely dry out the logic board and the MBP worked fine for a while but quickly the Q - W - E - R -T - Y - P keys got wonky then completely stopped working. I bought a replacement keyboard for cheap but then found out that it's held to the front frame with around 80 tiny screws. So I was using it with a BlueTooth keyboard. Recently I bit the bullet and for $69 bought an entire top case for my machine. Putting it in meant that the everything had to come out of and off the top case.
So you can see from the amount of corrosion, it doesn't take much to cause a failure. In this case a drop of liquid less than 0.5 mm would, over time with ionic action, cause a failure. There was a post about someone who had their MBP in a leather case and when they opened it up there was a lot of moisture on it. It was winter where he lived and we figured it was condensation. So even without spills this could happen.
So since your problem was with a sugary drink the sugar will be hydroscopic, that is it will attract water out of the air and keep the contact area moist. This will lead to future failures be it on the logic board on on the keyboard membranes.
The backlight being part of that array you've been looking at. (Finally got to it.)

N95 light won't turn off when slide open

I just find this, in rare occasions the backlight won't turn off and auto keylock not fuction(s/w) when the slide is open, but the phone is too shy to do it again after reboot, this is definitely a bug to me. It is a N95-1 with V21.0.016 f/w.
Message Edited by lotech on 14-Oct-2008 12:38 PM

I'm having this problem too :/ Help.
Mine is n95 8gb with the most recent firmware.
Message Edited by pyradev on 12-Jul-2009 02:31 PM
Message Edited by pyradev on 12-Jul-2009 02:32 PM

How can i unlock my keyboard lights? to turn them back on.

i havet tried restarting, shutting down, both dim and brighten buttons, and unchecking the keyboard light box under system preferences ...

Keyboard backlighting only works in a dark room.

HP Photosmart 7510 touch screen, power light and wifi lights won't turn on

I bought my HP Photosmart 7510 over a year ago, just past warranty. I've printed less than 50 pages total at home and only 3 photos. Just as of two days ago, the touch screen decided not to work anymore, and the lights that usually come on next to the power button and wifi icon won't come on either. However, when I turn it on, the same tones sound out and the scanner and ink jets move around in their usual set-up. I've troubleshooted with trying several different ways of restarting it, but to no avail.
HP tech support phone line was a joke, I got told by the first representative (before telling him which product I had or even offering to troubleshoot) that he was going to send a repairman to my house for $149. Over the price of my printer. So I tried calling back and spoke with a young woman who, when I asked if she would help me troubleshoot my printer, said "you can't troubleshoot that, only software". Then insisted that I pay $130 for a new printer. When I asked to be transferred to her supervisor, I was yelled at, told to again buy a new HP printer, and pushed off the phone.
I have had several HP products, I always seek them out for the brand name and have trusted the merchandise. But one year of life in a product is just silly. And unforturnately, I won't be able to convince myself to buy another one for that kind of lifespan unless I can fix this. I know I'm not the first one with this issue, is there a RECALL I'm not aware of? How can I get this puppy working again?

Hello cbroomhead,
I am sorry to hear about your Photosmart 7510's touch screen showing blank and not working. I understand you can still hear the printer warming up when you power it on. I would like to post you a troubleshooting guide below to try in hopes to correct the issue.
If you have tried all of the steps and the screen is still blank, you can also try another power cable if you have one.
Blank Control Panel Display
If you are able to have the screen come back on, also check for a Firmware Update.
I hope this helps!
Regards,
R a i n b o w 7000I work on behalf of HP
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Gx780 - klm light won't turn on

hello to all,
I give up... i really don't understand how to turn on led lights on keyboards....
Some suggest how to light up?
Thanks
Emy

It says it depends on region whether it has backlit keys or not.
• LED backlight keyboard (limited regions)
http://www.msi.com/product/nb/GX780.html
It shows how to use it on the same page through the keyboard LED manager.

Keyboard Lights won't turn ON

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