MacBook Pro :: Backlight Shuts Off At Login Screen
Feb 19, 2012
I have just replaced the display panel in my MacBook Pro (A1260) and now it is behaving oddly at startup. The backlight lights up normally until the boot process gets to the Login screen, at that point the LEDs shut off. I can see the images on the display, (the LCD seems OK,) the only issue is that the LEDs are turning off.
Here's what I've tried:
1) If I boot in Target mode, the screen stays lit. (As expected.)
2) If I reset PRAM, the lamp behaves normally, staying on through that session. If I restart, the lamp-off- condition returns.
3) I have reset the SMC per instructions here, [URL]. No change, LEDs shut off.
Info:
MacBook Pro (15-inch 2.4/2.2 GHz), Mac OS X (10.6.8)
There's a macbook I'm considering purchasing on ebay right now. The seller says:
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I kept my macbook (late 2008) turned on overnight on lowest brightness and when I tried turning the brightness back on this morning, the backlight flashed on for less than a second and then turned off again. Somehow I managed to get it to work, but whenever I move my macbook even slightly the problem reoccurs. I've done some research on my problem and I suspect that it's hardware related (maybe the inverter or the inverter cable?), but maybe the LCD itself is broken? Does anyone else have any experience with this?
I read on the internet that this is probably caused by lightbult or inverter board, but that information was on macbook or macbook pro, i couldn't find any information if its the same issue with macbook airs.. Has somebody had similar situation? How have you solved this issue?
I have a 2008 White body model Macbook with 2 gigs of ram and 2.1 core duo processor. My problem is that the screen won't turn on...when I start up my computer it lights up for a second, but turns off before the apple sign shows up. If I look really close I can see everything. Oddly enough, if I press the brightness button so to decrease the brightness to the very last bar and then hit the f2 button to turn up the brightness by one, the light will turn on for a few seconds, if i continually go back and forth, I can sort of use it enough to do something with it (thank god because I had all my work for school on it). I have included a link with this thread so you can see what I mean.
I have had my Macbook for almost three years now, and for the last month, the backlight for my screen has gone off. However, when I put the brightness down to 0 when the light is off, and put it up by 1 it sometimes turns on for a couple minutes/seconds/hours. Any help? By the way, I am using Boot Camp, I do not know if this happens on my Mac Side, because it comes up with a "stop" sign when I try to boot it up.
I own a macbook pro unibody A1286. I spilled some soda on it and I followed everything that you would do when a liquid spill happens. After a few days I turned on the macbook pro and I hear the charm and can see the screen with light on it. The back light had gone out on the unit. At first I thought It would be the screen, so I ordered a new screen and tried it out. With the new screen it is the same, the back light for the lcd wont turn on. Everything else on the macbook pro is functional except for the back light.
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i dropped my macbook. The screen was not responding any more but the backlight was still working. Now, i have opened up my macbook, because my insurance company gave me a new one. There is nothing i can see that is changed. So what is the problem here? I am not waiting to bring it to the store with a respond: It will cost you a 1000 dollar.
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A month or so ago, the backlight randomly went out on our MacBook. If you look very closely you can see the screen, but it's like you've got the brightness on its lowest setting. The backlight comes on as normal when you turn on the computer, or wake it from sleep, but goes out after about 2 minutes. Other than not being able to see what's going on, the computer works fine. I took it to the Apple Store, who said they'd have to replace something at a cost of ?75, which was fine. Just over a week later, they called and said that hadn't worked, and that it was actually the logic board that needed replacing, at a cost of ?385, more than the value of the computer. We decided it wasn't worth it.
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this is my first time posting,so my bad if i do anything wrong.
My backlight doesn't work when i tilt the screen less than 90 degrees. is there anything i can do besides take it to the apple store? I'd rather my dad didn't find out
I just noticed that on a black background, my 17" i7 MacBook Pro has two areas in the lower middle area of the screen, where the backlight is too bright compared to the rest of the screen. It is very noticeable on a black background and grey.. Is anyone else having this problem?
Other things I noticed: - there was dust on the plastic cover that you take off the case when you use it for the first time - the aluminium enclosure was slightly dirty, could be rubbed off though.. - there are two minor 'impurities' in the aluminium (?!).. two tiny grey spots/blemishes basically - there were a few minor scratches on the aluminium casing. - the apple logo at the back glows in a much warmer (yellow-ish) colour than the previous generation mbp (?!) - the screen seems not as bright as the previous generation - the keyboard backlight seems not as bright as the previous generation
My 2009 MBP would have problems shutting down or restarting. On a shutdown, it would appear to off, black screen and no lights, but if you tried pressing the power button nothing happened. I had to hold the power button to turn it completely, then press it again to startup.Restarts had the same behaviour, it would get to a black screen and I would have to hold the power button and then press it again to startup.I ended up taking this MBP back for another problem, and they replaced it with a 2011 MBP (since I had recurring logic board that failed a few times).Anyway, I swapped the SSD from my old mac into the new one, and I have the exact same behaviour!!Seems to be some corrupt settings or something. So I booted from a Mac installation disc, wiped my hard drive and reinstalled the OS, then I restored from Time Machine, and unticked the option to restore settings.I want to also add, that my backlit keyboard isn't working either.I tried resetting the SMC, but the power light on my charger didn't cycle orange/green, so I'm not sure if it worked. I tried multiple time, following Apple instructions.I also reset the PRAM, which did work.
Info: MacBook Pro (17-inch, Late 2011), Mac OS X (10.7.3), 16GB RAM, OCZ Vertex 3 Max IOPS 240
My MacBook Pro screen randomly goes black, yet the laptop still has power. I usually have to reboot in order to get back into the computer.. as moving the track pad doesn't bring the screen up.
Hi! Im new to the forums but i really need help with something and i was hoping someone here could help me out. So I just installed Tech Tool Deluxe onto my macbook and then shut it down later. I went back to use it again and when i turned it on a login screen appeared asking me to put in my password. I did that and the screen turned blue (looking like it was loading) and then went back to the login screen. Every time i put in my password it just takes me back to the login screen. I have had my mac for a while and i dont want my hardrive to get wiped out so what do i do? Thank you for looking
I was using firefox today (all I had open was facebook and gmail) and iCal was open in another space. All of the sudden my macbook screen went black, but the backlight was still on and the music was playing. I hit the space bar a few times and moved around the mouse and the screen came on for a second or 2, but then went black again. It wouldn't come back, so I had to hold down the power button. When it restarted, everything was normal, except that now the fan is going fast and loud, and my computer is getting hot with only firefox open to macrumors.
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I came home to discover my power cord had died and my laptop turned off due to no power. I used a friend's power cord to turn it on later that night and send some emails. I bought a new power cord the next day, plugged in, and turned the laptop on. It stayed on the gray screen with a spinning wheel beneath the apple logo for a while. I restarted it and it turned off after a few seconds of the gray screen. An empty bar flashes twice horizontally at the bottom before the spinning bar begins.I tried booting in safe mode, but it would just stay on the gray screen. I tried doing shift+command+v and received a message about keys out of order and disk error full, can't repair. I was able to boot from the install disc, and when I click "Repair Disc" I get the same erros. Not sure what to do now?
Just received my new imac today and everything is perfect, quiet drive, no stuck pixels excellent apart from some bad backlight bleeding which can be seen on black screens. It's particularly bad at the top and the sides.... Does anybody else have this and should I risk sending it back??? I have a 52 inch lcd sony and that doesn't suffer at all from back light bleeding...
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Ever since I sold it here on MR and got it back, there has been a problem with my 12" Dual USB iBook G3 500MHz's screen (lord, that's a long name). Whenever the screen is tilted back farther than 45 degrees or so, the backlight shuts off. I can open the casing and fix it if it's possible. Does anyone know what the problem with it is? I'm trying to get it fixed up and ready to sell back to my friend as his first Mac, and I'm trying to get every problem resolved
I tried uploading pictures with my s.card and then I plugged in my back up storage disk to transfer pictures and then my computer stopped working as if it was overloaded or something.... I tried forcing quit but that didn't help any. So I just shut it down in hopes that when it restarted it would work but now when it restarts the login screen comes up and after I type my password it just stays on snow leopard default screen(purple sky) and stays there.
I have not seen any posts comparing these two symptoms together, but I am wonding if both exist on the same screens, or if they are infact seperate issues. I returned a 27" iMac i7 because it had both slight yellowing and terrible backlight bleeding. I have seen multiple machines first hand (3 Core 2 Duos week 41s) at different stores (Apple and Best Buy) that had no yellowing and no backlight bleeding. I won't get into how to check for yellowing, you can read about that issue here: [URL]
But to check for backlight bleeding is both easy and impossible not to see if you have it. To check for backlight bleeding, a quick way is to bring up a site like http://www.blackle.com/ or any other black background, and check for an inconsistent white glow on the edges of your screen. I had serious backlight bleeding in the lower corners of my screen, which happens to be where the yellowing was happening. I don't know if they are related, but hopefully we can determine if there is any correlation here.
I did order a second machine, because I know Apple knows how to make a 27" iMac with a perfect screen (as advertised), since I have seen 3 of them in the wild. Hopefully they will be back to the quality that they had is their early production units very soon.
Fairly new MacBook Pro with OXLion. When I try to turn on the computer, the startup noise and screen appear (grey loading screenwith apple icon). A loading bar at the bottom of the screen fills about a third up, then the computer shuts down again.
