Screen flickers then gets darker on top.

I have an early 2008 20"Imac, and I also have the 10.8. Hmm, I wonder if that is the problem, I thought it was my invertor board. No warranty on this either.
My screen flickers then the top stays a litter darker.

Have you read for possible solutions over in the "More Like This" thread over here?----------------------->

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I have a late 2009 imac i am having issues with my screen flickering and getting dark

i have a late 2009 imac 21 inch i am having problems with my screen flickering ND GETTING DARK DOES THIS MEAN THAT MY COMPUTER IA FAILING

I have partly the same problem (Sceen blackening) sparodically.
2010 iMAC with I7 CPU and ATI Radeon HD 4850 512 MB Graphics.
If I lower the brightness to around (3 or sometimes 4 of the on screen squares F2) the issue does not happen at all. I prefer a bright screen.
The issue commenced immediately after instaalling OS X 10.8.2 update one year ago.
The current software is OS X 10.9 (13A603)
The graphics on this computer are always first rate when working properly even at maximum brightness
There are particular days and times when the problem routinely occurs.
Some of my neighbors with iMacs have similar problems.
I live adjacent to the City of London in an area where new building seems to be developing faster than the various utilities and there are known Power Network issues. Professional surge supressors make no difference.
I live in a large property with four independent ring mais. The issue is present on all four rings. I have yet to take the computer elsewhere to possibly eliminate power issues from the problem.
I am reluctant to replace an otherwise fine top of range iMac which otherwise serves me well since the same problems might be present.

Screen flickering then goes dark.. :(

When I open my laptop, the screen flickers for less than a second and then goes dark. If I open and close it quite a few times, occasionally the screen will work, for hours at a time. If you shine a flashlight on it, you can see the dim desktop, so I know the computer is running. It is a mid 2010 macbook pro.
I have tried rebooting and resetting the laptop.., but the problem is persistent and its been weeks since i am facing it..
Have already had my logicboard replaced few months back... and now this....
Please help me.... as it is no longer under APP , i am worried how much its gonna be charged..
For a fault that i have read is very common with many people who bought their laptop during this year....
Any suggestion or ay kind of help will be great..

See suggestions on this discussion: Screen flickers and goes dark when opening macbook
Make a Genius appointment. Troubleshooting and analysis are a free service at the Genius Bar. If don't have Apple Care and you need repair, then you would have to pay.
http://www.apple.com/retail/geniusbar/
Before you do costly repairs on an old Mac compare it to the cost of a new MacBook Air. Apple recently dropped the prices on the MacBook Airs by $100. Best Buy has been offering additional discounts on the Air. Prices start around $850.
http://store.apple.com/us/buy-mac/macbook-air
If you do purchase a new computer, get 8GB RAM. RAM is soldered in and you can't upgrade later.
Check out Apple's Special Financing link.
http://store.apple.com/us/browse/finance/instant_credit

Why is my iPod Touch 4G screen flickering light and dark?

my iPod Touch 4G screen flickering light and dark all the time?!?! I also have this problem where at the VERY bottom of the screen, Theres this white bar that keeps flickering on and off!! PLEASE HELP ASAP!!!

The screens are practically the same.
Did you purchase your iPod Touch second hand or direclty from the Apple Store? I would recommend that you go back to the Apple Store and show them both devices in action so that they can advise you closely.

IPhone 4 screen flickering then turning off and when i try to turn it back on it either works or I get a white or purple screen. When i turn it off it doesn't turn back one

Ok so this started around a week ago. I got home one afternoon put my phone down went back to it and pressed the home button and it seemed that it turned itself off so I tried turning back on, didn't work so I hooked it up to my laptop tried turning it on again it came on but I got a WHITE screen. So after that I decided to leave it for a bit I went to it after it started working fine...until 4 days later. I was on instagram and all of a sudden the screen starts flickering like crazy and then it turned itself off, I did what i did last time and just left it for a bit it came back on working fine. And then about 2 days ago I was listening to music and the screen froze then started flickering (getting quite annoyed at this stage) and then turned off, this time I tried turning it back on straight away only this time it worked. And that brings us to this morning, i was on facebook and about 5 minutes later it starts flickering and freezing once again and then turned itself off. So i hooked it up to my laptop I then got it to turn on for like 6 seconds then the screen started to dim and turned off. That brings us up to now about 10 minutes ago i tried turning it on, it turned on but I got a PURPLE screen and it just stayed like that until i turned it off. Does anybody have any idea what is going on? I think its the screen itself but i'm probably wrong. All help is appreciated.

I am also having the same problem.. Its too much annoying and its unfortunate nobody at apple support has anyclue of what is happening?
... This is happening almost most of the time keeping my phone down most of the times.

Screen flickers then goes black

Hello. Having a problem with the display on our 15" 1.25 G-4. After using it awhile, the screen starts looking like a strobe light then goes to all black. Closing the lid, letting it sleep for a bit waking later will then get it working. I've reset the PMMU, but haven't run the hardware checks because the disks are gone.
Any thoughts? Hardware? Driver?
Thanks

I suspect that it could be the inverter board which controls the backlight. I just had mine replaced after similar symptoms.

Screen flickered and went dark, fans spin, display port works

15" Macbook Pro, I believe late 2009?
Booted it up for the first time in a week, the screen flickered a few times, and when it got to the login screen it flickered and went black for good. By black, I mean the backlight is on (Apple logo is lit up), there is just no image. The fan spins up and down randomly, and I can plug in an monitor to the display port and get the generic login background, but no windows. I tried logging in blindly with no luck. I reset the NVRAM, no luck. Tried booting under AC power, no luck. Any ideas? Thanks in advance.

Hi rosburk!
I have an article here that can help provide you with some troubleshooting steps for this issue.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Thanks for being a part of the Apple Support Communities!
Regards,
Braden

IBook screen flickered then went black

Hi.
I have a 12" white opaque iBook (running OS 10.2...it was a hand me down, 700 mhz as I recall. Model is A1005) whose screen began to flicker, then went black. It wouldn't restart. After the usual panicking, I tried to restart with Disk Warrior (which was never installed onto that computer)
Next attempt to fix was to start in safe mode. Nothing changed.
I zapped the PRAM and then the screen came back. I backed up whatever I thought I didn't already have backed up. Feeling quite happy, I treated myself to some baked goods, then I shut it down.
Next day, I got only a black screen and then had to force quit by holding the power button down.
I tried 3 times to zap the PRAM, and still have only a black sceen.
Any ideas on what to do besides using the previously happy iBook as a coaster?
Thanks for any help!

Hi, and welcome to Apple Discussions.
Here is the link to an Apple Knowledge Base article on troubleshooting portables that won't turn on or start up:
http://support.apple.com/kb/TA25686?viewlocale=en_US
And one for all Macs in general:
http://support.apple.com/kb/TS1367?viewlocale=en_US
And another on troubleshooting when the computer displays no video:
http://support.apple.com/kb/HT1573?viewlocale=en_US
It also sounds like it is possible that it may be having logic board problems. Enough Dual USB G3 iBooks suffered from the logic board problem that Apple began the iBook Logic Board Repair Extension Program in January of 2004. Do the symptoms look familiar? After leaving it sit overnight, does squeezing the case to the left of the trackpad allow you to start up and work for a bit as long as you keep the pressure on it there? If so, you may want to consider trying the shim fix suggested by John Sawyer here in the Apple Discussions iBook G3 (Dual USB) Forum:
[Y]ou can often fix this yourself by removing the iBook's bottom housing, and placing a shim of any sort, about 1mm to 1.5mm thick, onto the raised square on the bottom shield. I use a Scotch mounting square--you can get them in hardware stores and many grocery stores. When you reinstall the bottom case, it will press against this shim, which will press against the graphics chip, and may allow the chip to come into better contact with the logic board.
John Sawyer
CJS Macintosh Repair
Instructions for removing the lower case:
iFixit.com
If this doesn't help, let us know and we will try to figure out something else.
Good luck.

Screen flickering, then solid grey

Ugh, hopefully someone can help. My 2012 IMac running 10.9.3 all of a sudden today, screen began to flicker like crazy. I then turned it off, tried again and for a few minutes worked as it should. Then, screen flickered again and then solid grey. Turned off again and it repeated the cycle. I do not have applecare so am hopeful it's something basic. Any ideas. thoughts? Thank you

I would start troubleshooting by going to Apple's Mac OS X: Gray screen appears during startup article located at:
Mac OS X: Gray screen appears during startup
Follow the steps methodically and if the machine still will not work correctly after going through each and every steop then the last step says to take it into your local Apple Store or AASP.

Screen flickered, then went black (faint windows can still be seen)

i was just working on my powerbook and my screen flickered on and off and turned black. the best way to describe this is like what a lightbulb does right before it blows out. what is wrong?! i am trying to type this as fast as i can before it starts doing it again. is my LCD frying?

Might be bad Power Management Unit settings - following instructions to reset PMU.
Otherwise, there are 3 likely hardware related causes:
1. Failing LCD Display backlight - needs replacement
2. Broken/Intermittent ribbon connection - needs soldering and/or replacement
3. Failing LCD backlight Inverter - needs soldering and/or repalcement
For all 3 of these screen would require service for technician....call Apple if you have warranty.

My screen is randomly getting darker.

Every few seconds my screen gets a little bit darker for a few seconds and then reverts back to normal. When the screen is darker it has patches that are darker than the rest.

IIt could be a damaged video card, but first of all try resetting the SMC:
Intel-based Macs: Resetting the System Management Controller (SMC) - Apple Support
ANd if that has no effect, reset the NVRAM:
How to Reset NVRAM on your Mac - Apple Support
Tell us which video card you have. Click on About this Mac under the Apple menu, include year and model of the Mac as wel.

G41 LCD flickers then goes dark

My G41 LCD began acting up yesterday. For what it's worth, the LCD would turn back on for a few minutes after closing and opening the lid, then flicker and go dark. As I had trouble shot a bad NVIDEA card a couple of months ago, I decided to check for loose connections in the LCD cable and get the FRU number from the inverter card. After reseating the cable, before putting all the access covers back on I powered it on. It came up fine for about 15 minutes and while I was looking at it a snap and puff of smoke came from the inverter card and the machine powered down. I pulled the cable from the NVIDEA card and it works fine with an external monitor. I know I need an inverter card. Does that sound like all I need?
Solved!
Go to Solution.

If you're lucky, yes....
Should the machine blow another inverter, you may have to replace the backlight as well...
Good luck and keep us posted.
Cheers,
George
In daily use: R60F, R500F, T61, T410
Collecting dust: T60
Enjoying retirement: A31p, T42p,
Non-ThinkPads: Panasonic CF-31 & CF-52, HP 8760W
Starting Thursday, 08/14/2014 I'll be away from the forums until further notice. Please do NOT send private messages since I won't be able to read them. Thank you.

Well the screen on my Macbook has become well unusable and well the screen flickers then freezes and i cannot move the mouse unless i hold the screen i suspect something is loose in the screen which connects it to the hard drive and keyboard

i find this to be very annoying and i am suspecting i will have to take my Macie to get repaired i was just wondering is anyone else has any similar problems i find this very annoying and i am not all too sure how it has begun to happen due to the fact that i have NEVER dropped or done anything to harm my macie and well i do not understand why this is happening i mostly use my computer while sitting at a desk so i do not understand but oh well i am rambling on please if anyone has had a similar problem do share.

If your screen is flickering, you might have a hardware issue there. I would take Macie to the doctor and have her checked out.
17" 2.2GHz i7 Quad-Core MacBook Pro  8G RAM  750G HD + OCZ Vertex 3 SSD Boot HD 
Got problems with your Apple iDevice-like iPhone, iPad or iPod touch? Try Troubleshooting 101

IPhone start up screen flickers then shuts off

I've tried holding down the home and sleep button down for ten seconds, no luck. Even restored my iphone but yet the screen just does not turn on!! Help?!?
My iPhone can connect to itunes and I can hear alarms going off and I get the occasional vibrate but nothing else is happening???

The Basic Troubleshooting Steps are:
Restart.. Reset.. Restore from Backup.. Restore as New...
Try a Reset of the Phone... You will Not Lose Any Data...
Turn the Phone Off... ( if it isn’t already )
Press and Hold the Sleep/Wake Button and the Home Button at the Same Time...
The Apple logo will Appear and then Disappear...
Usually takes about 15 - 20 Seconds...
Release the Buttons...
Turn the Phone On...
If that does not help... See Here:
Backing up, Updating and Restoring
http://support.apple.com/kb/HT1414
If you try all these Steps and you still have issues... Then a Visit to your Local Apple Store is the Next Step...

My ipad 2 does turn on but every time i try to turn it on the screen flickers then goes blue then turns back off

well I need help its not even working its freezing cold

I'm not sure why the device is like that, but if your iPad is freezing cold, don't try to do anything with it until it warms up to room temperature. Once it warms up, if you still see the blue screen and it goes back to black when you try to start it up, try this.
When starting up, you might see the Apple logo or a red or blue screen for a long time, or your device might restart again. Try these steps:
Make sure that you have iTunes 12 or later on your computer.
Put your device in recovery mode.
When you get the option to restore or update, select Update. This will reinstall iOS without erasing your data.
I copied that text from here.
If your iPhone, iPad, or iPod touch doesn't respond or doesn't turn on - Apple Support

Screen flickers then gets darker on top.

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