Why is my desktop apple monitor flickering?

Why is my desktop monitor flickering?

Hi, not much to go on, but mist likely the backlight is going out...
http://www.ifixit.com/Guide/Installing+iMac+Intel+20-Inch+EMC+2133+and+2210+LCD+ Backlights+%28CCFL%29/5864/1

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TS1367 I have a mac book pro, 2012 and an apple monitor but the monitor keeps going off. What is causing this? Why won't it stay connected?

Why won't my Apple monitor stay on with my mac book pro?

I know there were many more problems 5 yrs ago with 3rd party monitors and have been some issues in between also.
Apple does have what is needed to use multiple 30 inch displays and the 5770 is pretty mainstream and standard.
It is also about the only card being sold outside ebay and a couple places in case you want to take your chances with Nvidia 8800GT 1st gen model or ATI 4870.
Mini DisplayPort to Dual-Link DVI Adapter
Display Adapters Needed

Monitor flickers with green tint

Monitor is about 3 years old. Often times, the screen takes on a blue-green tint. Sometimes just flashes on, then back to normal a few times. Sometimes tint stays for a minute or two. All images are visable, but everything has a strange greenish cast to it.

Hello @snelson600,
I have read your post on how your desktop's monitor flickers with a green tint, and I would be happy to help you!
I am providing you with some steps you can try below:
Step 1. Unplug the power cord from the back of the monitor and the wall
Step 2. Hold the power button down for at least one minute
Step 3. Plug the power cord back into the monitor and then into the wall outlet (not a power bar or surge protector)
Step 4. Press the Menu button on the monitor
Step 5. Navigate to the Factory Reset option and select it
Step 6. Try a different cable connecting your monitor to your computer
If the above steps did not resolve your issue you can try the monitor on a computer or other device to see if the issue persists. Please call our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region.
http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html
Thank you for posting on the HP Forums. Have a great day!
MechPilot
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

Can I daisy chain 30" apple monitor to thunderbolt HD on macbook pro?

I have a 30" apple monitor plugged into this adapter: http://foliovision.com/2009/12/apple-dual-dvi-mini-displayport-adapter-mb571z that in turn is plugged into the thunderbolt port as well as one USB port on my 2011 macbook pro i7.
I want to buy a Lacie Big5 thunderbolt RAID system, but I only have one thunderbolt port. will i be able to daisy chain the monitor to the thunderbolt RAID?

I don't want to assume that it will work because it a little bit different on the Retina. All of the 2012 line of MacBook’s utilize the same thunderbolt controller which does support 2 displays and 4 10Gbit/s data (even the MacBook air 11" can support 2 external monitors and it's own display). But i think that the controller is hardwired for each port meaning each port only has 2 10Gbit/s data and 1 display. I haven't been able to confirm this because I don't have 2 thunderbolt displays and i was wondering if anyone has tried this. The reason why I ask is because I'm doing research on all of the new MacBook’s and their Thunderbolt controller.

30" Apple Monitor as HD TV/DVD Source as Well?

Hi everyone! I am considering buying a 30" Apple monitor with my PowerMac and am considering the following:
Ditching my old TV and having just the computer and 30" in my bedroom. I want to use the 30" monitor for both my PowerMac and for watching DVDs, playing Xbox, and watching cable (both regular and HD). Is this possible? Will I need to sacrifice anything to accomplish this?
Thank you,
Keith

The Refresh Rate of apple's LCDs are a bit slow for good gaming. They give you a blurring effect with lots of movement. I wouldn't recommend it. Most LCD's right now are not great for gaming with the Xbox. Maybe I'm picky, but I got a bad headache and did not enjoy it. Also, you need to think of how you are going to get your dvd player/xbox connected to the LCD. It has a dual DVI input. You will have to run it through your computer with a TV-PCI card or a video capture card, if you have a desktop computer w/PCI slots. Also you will need a HD-Cable box with a DVI output. Even then you will have to keep unscrewing the cable to switch between your computer and the cable. Or you could find a TV card/video capture card to put the cable through your computer, but to be honest it may not look great on the LCD because the LCD has such a high resolution, and most TV, even the HD tv thats out now isn't truly the resolution of the LCD. You may end up not using the whole screen when playing games of viewing TV.
And then there is apple's pixel policy, as well as other lighting color problems, that they are not too willing to replace a 30" LCD with questionable problems.
For this kind of money, and for what you want to do. I would get a nice 20"LCD and a 30" Tube-Flat Glass screen HDTV from somewhere that offers extended warranties, and you will probably still save some money as opposed to the 30"LCD.And You will probably enjoy the DVD/Games/TV more. Unless you are editing HD video, or doing massive graphic design work/animation, I would bother getting such a large screen for your computer. It won't easily double as a TV/DVD/Game Monitor and it can't be coveredfor more then a year unless you buy it with a computer and buy applecare. And then you still will have to kick and scream at the genious bar to get it repaired.
Just my opinion on the matter. I went through this whole proccess previously.
Good Luck.

Apple monitor keeps changing background pattern

I have been using an inexpensive 18in flat panel monitor as a second screen with my MacBook Pro. I borrowed a friends 20 Apple monitor and tried it instead of the 18in, but the background screen pattern keeps changing every 15 minutes or so. I have reset the preferences NOT to change a dozen times. Sometimes it will accept me setting it to Panther Aqua Blue, sometimes it will not, but it always soon changes the pattern to one of the Apple Plants pattern and then changes again every 15 minutes or so. The "change picture" option is not selected. This never happened with my old cheap monitor. Any suggestions?
Thanks
Henry

delete the file homedirectory/library/preferences/com.apple.desktop.plist and log out/in. set your desktop background as you like it. it should behave normally now.

27" Monitor flickering then losing power

Hello,
At the office we have a 4 year old 27" apple monitor. For the last two weeks it's been flickering occasionally and on a couple of times lost power altogether. Now it only holds power for a few seconds.
If I unplug the power and leave it for a few seconds/minutes then put the power back in the back comes on for a few seconds to a minute, flickers and then turns off.
We've test the cables with another monitor which we bought at the same time and they work fine.
It leads me to believe that capacitors on the board of the monitor have failed. As the warranty has expired are there any exceptions in this case or do I need to go buy a new set of caps and soldering iron?
Appreciate any feedback.

My problem is that unplugging the monitor does not help.
By changing the resolution a few times I can fix the screen flicker problem but then get a single verticle line of horizontal lines on the right side of my monitor that increase in speed as time goes by.
It is the lesser of two evils so I just use 5/6 of my monitor and cannot see the lines against a black background.

HDMI Monitor flickers

I have an VGA Monitor connected via adaptor to the HDMI port as a second Monitor to my Thunderbolt display. The VGA Monitor flickers and it was suggested to upgrade the firmware. But the system tells me the firmware is not for my system (Mac mini Model A1347 from autumn 2011).
How can I fix this problem?

What monitor(s)...?
If one has (Digital) DVI input, then you should use it on the HDMI port with the Apple Supplied HDMI to DVI adapter and a good DVI cable.
If both have (Digital) DVI input, then it would be best if the second one was also on a Thunderbolt/MiniDisplay Port to DVI adapter instead of analog VGA.

17" Apple Monitor ceased to display, how can I test it

My 17" Apple monitor suddenly ceased to display. I can't see what I'm doing! It has the two USB ports occupied by bluetooth and usb speakers both of which function ok. The power light behaves as normal. Is it possible that the actual display matrix can have gone? Is there any way that I can test or check it to assess what the problem is?
Any help would be great. Ta

Hello, and thanks for your responses. Its a 17" LCD screen.
When its connected the power light on the front is on permanently and does cycle through any sequence.. I'll try and check it again re the dimmed desktop when I reattach it again to test it out.
I guess I was wondering if it is possible to short out any circuits when attaching a USB 2 device to a USB 1 port as on the back of the monitor. I wouldn't have thought so but I'd be interested to know if anyone has any other input. This was the only change to my set up was when I attached my LaCie USB speakers to the usb port on the back of the monitor. They worked fine for a few days and then one day the screen wouldn't function.
Thanks for the link to the forum but it appears that the monitor I have is of the older variety of cinema display which uses the ADC rather than the newer models which may have a separate power supply. If I could check this monitor on another mac then I could maybe do a wee bit more analysis but due to the ADC connection then its not so easy to find another MAC of that vintage which has the ADC monitor connection on it. Also having to pay around £70 for and adaptor ( http://store.apple.com/uk/product/M8661B/B ) to allow me to connect it up to a powerbook to test it seems a bit much when the monitor may be worth nothing if it is completely dead.
I'll continue to try to resolve and understand this as I don't want to just dump the monitor if it is just a relatively minor issue to be resolved. Any thoughts are gratefully read.

Monitor flickers

Greetings,
I have a new mac mini with 16 mb memory, 2 T hd and acer 24" monitor connected to the DVI to usb connection. Latley and from some unknow reason , the monitor flickers every once and a while.
Is there an issue with the mac mini? Or the video card in the mac mini? Or is there some issue with the monitor compatibility?
Cheers,
justin
[email protected]

Hi, the new Mini's HD4000 graphics sure has a lot if flickering problems & mixed results with different Monitors & connection types.
https://discussions.apple.com/message/19284543#19284543
https://discussions.apple.com/message/21594022#21594022

Computer Monitor Flickers

My computer monitor flickers if we tap it on the side it stops, then starts up again, sometimes we go hours and not problem, other times it drives us nuts, We have a Gateway computer, it works fine except for this monitor problem, it was purchased in 2004, it has a "nvidia GE Force 2 MX 400 video card, I checked with Nvidia and tried downloading the latest driver but then the computer wouldn't start so I had to go back to a previous date so that the computer would start, do I need to look at getting a new monitor? IF so what sort of monitor would be best, someone said the resolution would not be good on a wide screen, but the only ones I have found at Best Buy and other places are the wide screens. I hope someone can suggest a solution so we can enjoy this second computer and stop hitting the monitor
thanks Lea

I'm having a similar flickering problem with the LG widescreen LCD monitor which came with our first Vista computer (an HP desktop, purchased about a year after Vista came out). It mostly only seems to flicker when I'm playing games with animations in the graphics (such as Civilization IV or Astral Masters). The most common suggestion I found (f.ex. in the HP Help & Support area preinstalled on my computer) was to increase the refresh rate. Doing this has not eliminated the flickering, but has lessened the severity somewhat (it just flickers as vertical lines or bars at 75hz; at the default of 60hz it flickered as both vertical and horizontal lines). I ran HP's Monitor Diagnostic Tool (which included a simple wireframe animation), and it didn't turn up any problems.
Hockeycanuckjc's suggestions sound pretty practical, and I'll try them. I've also seen on another thread on this board that Nvidia graphics cards (my HP computer has an Nvidia Geforce 8500GT) can have issues with the drivers, especially after Windows Vista has just automatically downloaded its latest updates -- so it's possible that the graphics card driver could be getting cranky (though I haven't yet confirmed or denied that theory in regard to my own computer).
I think my HP computer is still covered under its Extended Service Plan (though I'd have to check the sales receipt to be sure), but I want to do as much troubleshooting as I can before calling Best Buy tech support, so I'll be able to explain my problem more knowledgeably, and hopefully not have to jump through as many hoops as usual before they authorize an in-home service call.

30" HD Apple Monitor leaving ghost images and vertical lines

I have a Mac Pro Gen 1 with ati 5770 HD video card runing Snow Leopard. My 30" HD Apple Monitor will flicker and leave verticle lines and perstent ghost images from closed windows, even during shut down. Some times it will flicker back to normal, but then it will flicker back to leaving verticle lines and ghost images. I have tried using a different video card, same issue, nothing changes. I have tried instaling new video drivers and using old ones. I have been using the ati 5770 HD for months now without any issues. How do I fix this?

If two different cards produce the same results then I would think its your 30" display which is failing.
Update:
I just noticed in your sig you are using 10.6.8. There are some threads about video problems (flickering, not sure about vertical lines) with 10.6.8 (google "10.6.8 flickering site:discussions.apple.com"). So if you boot from your installer dvd which presumably has an older version of OSX (10.6.4 maybe?) do you still see the display problems?
Another thought - would an smc and pram reset affect anything? You might give it a try too.

Monitors flickering badly after Yosemite Install

Monitor flickering badly after Yosemite installed
I will be awaiting upDated drivers in a release soon.
I notice is very badly when I connect my iphone to ITunes screen
goes crazy flicker. . . . Anyone else having this issue ?

Try these in order testing your system after each to see if it's back to normal:
1. a. Resetting your Mac's PRAM and NVRAM
    b. Intel-based Macs: Resetting the System Management Controller (SMC)
2. Restart the computer in Safe Mode, then restart again, normally. If this doesn't help, then:
     Boot to the Recovery HD: Restart the computer and after the chime press and hold down the
     COMMAND and R keys until the Utilities menu screen appears. Alternatively, restart the
     computer and after the chime press and hold down the OPTION key until the boot manager
     screen appears. Select the Recovery HD and click on the downward pointing arrow button.
3. Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the Utilities menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu. Select Restart from the Apple menu.
4. Reinstall Yosemite: Reboot from the Recovery HD. Select Reinstall OS X from the Utilities menu, and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.

Can someone tell me why my iMac lighting element is flickering?

Can someone tell me why my iMac lighting element is flickering and going to sleep mode too quickly? The guys at Austin MacWorks (official Mac reps) said they could not duplicate the problem in the shop, but I have a feeling thery did not give it a thorough look. I don't know to whom I should turn on this.

What model iMac? Do "About the Mac" and report what it says for processor type. That's a good start to figuring out to which of the four families of iMac yours belongs.
Also, check the OS version in the same window. Only 2002 iMacs with backlit displays can run the ancient 10.1 OS shown in your profile.
If you are in Auston Tx, I'm pretty sure it has a real Apple Store. That;s an option if you are still under warranty.

I'm trying to connect my 30" Cinema Display to my new Mac Pro along with a new Apple 23'" monitor. The new Apple monitor is fine. On the cinema monitor everything is blown up pretty large. Any ideas on how to solve this?

I'm trying to connect my 30" Cinema Display to my new Mac Pro along with a new Apple 23'" monitor. The new Apple monitor is fine. On the cinema monitor everything is blown up pretty large. Any ideas on how to solve this?

The 30" display needs a DUAL-LINK adapter.
<http://store.apple.com/us/product/MB571Z/A/mini-displayport-to-dual-link-dvi-ada pter>

Why is my desktop apple monitor flickering?

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