Monitors going dark, then back on

I have two Dell 24" monitors connected to my Mini. Occasionally both monitors (sometimes just one) will go dark, remain dark for 3-4 seconds, then come back on with no noticeable damage done.
It happens maybe once a month on average, but has happened twice this morning.
Is something about to crash and burn? What would cause the monitors to go dark, then come back on?
Thanks for any ideas.

Mini blanking, so many...
https://discussions.apple.com/search.jspa?resultTypes=&dateRange=all&peopleEnabl ed=true&q=monitor+blanking+mac+mini&containerType=&container=&containerName=&use rname=&rankBy=date&numResults=15
Oh, is this perchance after sleeping?

Similar Messages

I have a "white screen " ,tried to hold the two buttons down and it still won't work.The screen goes dark, then comes back white.

I have a "white screen",tried to hold the two buttons down and it still won't work.The screen goes dark, then comes back white.

Morning Clementine Lin,
For more information this, please see this article:
iPhone: Hardware troubleshooting
http://support.apple.com/kb/ts2802
Take a look at the Will not turn on, will not turn on unless connected to power, or unexpected power off section.
Have a nice day,
Mario

Ipad screen is white. Restored it on iTunes. Press home and on switch goes black then back to white with no logo at all. Can't get past the white screen. This happened after running app updates. 16GB OS 7.1.1

The ipad screen is white. Holding buttons didn't work so I restored it on iTunes. When I press home and on switch, the screen is white, goes black then back to white with no logo at all. Can't get past the white screen. This happened after running app updates. Is there any fix besides going to Apple store? In iTunes on computer can see what is on there. 16GB OS 7.1.1

FORCE IPAD INTO RECOVERY MODE
1. Turn off iPad
2. Turn on computer and launch iTunes (make sure you have the latest version of iTune)
3. Plug USB cable into computer's USB port
4. Hold Home button down and plug the other end of cable into docking port.
DO NOT RELEASE BUTTON until you see picture of iTunes and plug
5. Release Home button.
ON COMPUTER
6. iTunes has detected iPad in recovery mode. You must restore this iPad before it can be used with iTunes.
7. Select "Restore iPad"...
Note:
1. Data will be lost if you do not have backup
2. You must follow step 1 to step 4 VERY CLOSELY.
3. Repeat the process if necessary.

My iPhone 4S on iOS7 is stuck on Apple Logo, and it goes off, then back to Apple Logo again for hours. Pressing home button together with sleep button does not help. Plugging the phone to Mac and restart does not help either. What do I do?

My iPhone 4S on iOS7 is stuck on Apple Logo, and it goes off, then back to Apple Logo again for hours. Pressing home button together with sleep button does not help. Plugging the phone to Mac and restart does not help either. What do I do?
Have not backed up for months, so prefer not to lose the data.
Thank you for your help in advance.

Restore iPhone with iTunes on computer. Open iTunes on computer. Connect iPhone to computer with USB cable. Hold both Home and Power buttons until iTunes recognizes iPhone in Recovery Mode, usually about 20 seconds time of holding both buttons. Click the Update or Restore button that iTunes offers.

When I touch my iPad screen to execute an app, the screen goes dark then the app icon reappears. The app does not execute.

When I touch my iPad screen to execute an app, then the screen goes dark then the app icon reappears. The app does not execute. Any thoughts?

Try a Reset...
Press and hold the Sleep/Wake button and the Home button at the same time for at least ten seconds, until the Apple logo appears. Release the Buttons.
Basic troubleshooting
From Here
http://www.apple.com/support/ipad/basics/

My iPod has a white screen. After holding down the middle and the menu button it goes black, then back white, and then beeps twice but stays white. It never shows the apple logo, just stays white - help!

My iPod has a white screen. After holding down the middle and menu button, the screen goes black then back to white and beeps twice. I have returned to original settings and resorted content to no avail. I still have a white screen. I have plugged it up and tried resetting again and again, still a white screen with two beeps - help.

I have the same exact issue. Fifth generation iPod Nano, blank screen, Restore had no effect. I'm running Windows 7 Home, with all software up-to-date. I suspect hardware damage. Any clarification would be appreciated. Thank you in advance.

I have an IPhone 4 lately its been still on but the screen goes dark then after a while of trying to get it to normal again it goes back now i cant get it to go back now

I have an Iphone 4 and lately the screen has been going dark but i know its still on because i can here it if so,eone calls me or text me .however this morning it went dark agian but i wasnt able to get it visibale agian i tried to hold down the home and power button but then ikt asked me to download or update itunes or it wanted me to recover it so i did and my phone went on for a few min but went off agian so i tryed to do it a few more times and i still dont know whats wrong with it

Make an appointment at an Apple Store to have your device examined by a technician. Or contact Apple Support.

Monitor goes dark on 2008 Mac Pro Tower with ATI Radeon 5870 Card

I have a 2008 Quad Core Intel Mac Pro Tower running 10.6.8.
The original graphics card had trouble with HD movies of any kind and eventually my screen would sometimes not turn on (stayed black) when the computer was turned on.
So I replaced the graphics card for both reasons to a ATI Radeon 5870 PCIe with a GB rather than the 256 that came with the machine.
The problem was solved. I got a new monitor, one that is like the latest ones and all has been working great for a few years.
Then recently the monitor started going dark while the computer was on. (no screen saver or anything like that, I can be in the middle of work on a photo or video).
Trouble shooting I have tried.
A forum said drag the mouse to the hot corner for a while and then back. Well, I tried, assuming I was dragging the mouse to the corner. Didn't work.
I tried using the keyboard commands to shut down the computer. It didn't work.
I tried plugging the keyboard into other USB ports and tried to shut down the computer. No luck.
The only thing that works is shutting down the computer with the power button.
on start up the monitor is back on.
Sometimes it works for days like this, other times the monitor stays on only minutes.
The monitor is fine. Tested my old monitor on the computer to make sure it wasn't my new monitor.
So the questions are:
Can it be over heating?
is it worn out, toast, done and or dead and dieing?
Should I buy a replacement graphics card VS finally upgrading and getting a new computer (lots of $$$$ but then I do work in HD Video so....)
any help is appreciated
thanks
john

Replacing FBDIMMs would be today inexpensive and worth doing.
No one knows if heat is an issue without your using thermal sensor monitor. Probably want to up the default fan speeds while at it.
And because you don't have Lion+ then even more reason to setup a small maintenace volume on another drive with OS X basic system for repairs. In fact you should always have a bootable backup or two you can rely on.
Restarting may work, or it may be you have now new issue with corrupt fies or directory that a safe boot even is no guarantee of fixing.
When in doubt, try a clean new OS install on another drive.
And FBDIMMs: $25 for a 2x2GB set on Amazon.com
You want to get the most out of what you have, a small investment in RAM, maybe recycle those drives for 2-4TB units. And an SSD will have system responding better and perform better.
My guess, the 5870 wasn't needed and was overkill and a 5770 for almost half would have been more than adequate.

2010 mac mini - monitor goes dark every few sec's problems since Mavericks Install

My Wife updated her 2010 Mac mini from Mountain Lion to Mavericks and ever since, after start, up the display intermittently flashes a dark screen, every few seconds. (within 3-10 seconds or so, there will be another period of dark screen, that may last aprox. 1- 6 seconds. The timing of this changes constantly. The finder and all apps I have seen are affected in the same way. it seems to be an all-the-time problem
the monitor is an OptiQuest Q9, and the system connects via an Apple mini display to VGA adapter (supplied with the mac mini) , then a vga cord into the monitor, which has a native resolution of 1280 x 1024.
The only workaround we have found is to boot the mac with the monitor cable disconnected, then reconnect the monitor cable after boot up is complete. In that case, the monitor does not flash, until the mac is shutdown or restarted again.
Steps I have already tried:
Zapped P-Ram
Reset SMC (shutdown, waited with power unplugged, then reattached power and rebootted
Repaired disk permissions,
repaired disk
re-download and reinstalled mavericks fresh.
changed display prefs for resolution, detected displays, etc.
Changed background picture.
I don't know where to go with this anymore, and it has already taken a lot of time.
Who's got a Fix?    And if there is no fix, how do I revert from Mavericks to Mountain Lion?   The mac mini came with Snow Leopoard.

Problem Fixed!
I found another page that referred to resetting the PMU (http://support.apple.com/kb/ht2183) , which controls things like wake and sleep:
"If the settings in the PMU become corrupted, it can result in operational anomalies such as your computer not turning on, not displaying video, or not waking from sleep, among other things. In these situations, you may need to reset your computer's PMU."
Anyway, it is pracitcally the same proceedure as resetting the SMC (SMC reset= Shut down, disconnect power cord for 10 seconds, reconnect power cord, wait 5 more seconds, turn computer back on)
but it is slightly different:   (PMU REST = Shut computer down, disconnect power cord for 10+ seconds, reconnect power cord WHILE SIMULTANEOOUSLY PRESSING POWER BUTTON, let off power button for a few seconds, then press power button again to restart the mac mini.)
After this the display problem was fixed, but the fan ran at high speed, so I did one more SMC reset as described above. Now everything is in order.   This also fixed the issue of the mac mini not waking from sleep unless the power/sleep button on the mini was pressed (it wasn't responding to the keyboard to awaken). Now it's all good.
Hope this helps somebody else...

Hi I have used my macbook pro with miniport to HDM, and it was working fine. Hadnt used it for a month and now when I connect the TV, the screen on the mac goes blue then back to the page but nothing comes up on the TV. Any ideas?

Hi I have a year old Macbook pro. I was using a miniport to connect it to the TV via HDM cable. It was working fine but I have used it for a couple of months kept it in a drawer and now it doesnt work. When connected to the TV the screen on the mac goes blue as though there is some signal then back to original screen but the TV doesnt show what's on the laptop. Please any suggestions, thanks??

Hello nothingissecret
Check out the article below for troubleshooting steps to resolve the issue. One would be to try a different cable or adapter to test with the television.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Thanks for using Apple Support Communities.
Regards,
-Norm G.

My monitor goes dark 27 inch 3.1 iMac.

Got this wonderful new iMac for Christmas except the display goes dark now about every 15 minutes. I tried a software fix -- did not work. Is there anything else or should I just pack it up and send it back?

Thanks for the input. I was not specific enough. This was happening while the computer was in use, so the sleep setting should not be an issue. And yes, I am aware of Apple Care -- my first Mac was the 512K Enhanced -- but I was hoping to resolve the situation with getting Apple Care involved. I say was, because for some reason, the problem has stopped. I have had 24 hours of nonoccurrence, including a couple of sleep periods. I had downloaded a software patch from Apple, but that seemed not to help. Had 3 or 4 occurences after that. However, the malfunction has stopped for whatever reason.

Several times over the last few days while on safari my iPad spontaneously shuts off screen goes dark then goes to home screen what's going on and how do I fix it when I look at settings diagnostics it says that there is low memory ?

Safari crashes several times while on pinterest, screen goes black then goes to home screen when I start safari again it keeps doing the same thing. I checked the diagnostics page and there are several references stating low memory yet when I check the memory on the iPad there is plenty of memory help please

The memory that is low is the processor memory, not the overall storage space. Next time, before you go to that site, double tap the home button to see the task bar. You will see the list of apps siting in the recently used list. Most of them are not doing anything, but some of them are using up memory. Touch and hold any one of them until they jiggle, then close them all off by touching the minus sign.
Do that every so often to help the pad use it's memory wisely.
Some apps, and browser pages use a lot of memory, and do not give it back easily, causing what sis happening to you.
You can also get a similar result by rebooting. Press and hold the home and sleep buttons until the apple logo appears, ignore the red slider.

HT1349 My Apple MacBook Pro won't start up. It is stuck on grey screen and I reset all of the stuff. It still won't work also half the screen goes dark then you have to shake it till it goes back on. Please help.

MacBook Pro Older version with grey keyboard

You might have better luck posting on the Mabook Pro discussion forum, as this is the OS X Xserve server forum.
Have you tried booting it from a DVD? If so and you find the same result, then its probably a hardware issue.

20' monitor goes dark with lines

I bought the monitor with the very first G5 2G dual tower. I have had the half dark screen and it was fixed. I got it back after that and it had another problem, it went all dark with horizontal lines, then it goes to black on the edges and vertical lines in a block in the center. Any ideas? When I sent it in for this last time, it was sent back and they said they could not get it to do that......ok it did seem fine for some time....but now it is doing it again. I have unplugged it and will leave it unplugged for a couple of days and try it one more time before I call and see (no under warranty now, was the first time it exhibited this problem) if it comes back to me again?

I have my monitor back and it has the same problem that it first had last summer. I don't know why the technician would have said this monitor was repaired when half the screen is darker than the other and the error light is doing the short-short-long, indicating the inherent problem that so many have encountered.
I am on the phone right now to try and get this resolved. This monitor has been sent in a total of 4 times now in the last 6 months.

IMac monitor goes dark; 2nd monitor ok

I have a dual monitor setup on my iMac (2009) running Snow Leopard (10.6.8). The iMac monitor had been working great, but now it goes to a black screen. I am able to access it briefly (for about a second) by lightly pressing the power button on the back. The iMac monitor flashes on briefly when I do this and I'm able to quickly click on user. I used this same method to open Settings and drag it over to the 2nd monitor to change the display setting to Mirror mode, so I'd have access to the dock on the 2nd monitor (Dell 2007WFP).
I have tried the following so far:
     checked cables
     restarted by powering off, pressing on/off button for 5 seconds, unplugging for 15 seconds.
     booted in Safe Mode
     reset PRAM (I believe this was reset, but I don't know for sure because I couldn't see anything on the monitors.)
Other information:
     2.66 GHz Intel Core 2 Duo
     8 GB 1067 MHz DDR3
     NVIDIA GeForce 9400
Thank you in advance for help with this issue!

Replacing FBDIMMs would be today inexpensive and worth doing.
No one knows if heat is an issue without your using thermal sensor monitor. Probably want to up the default fan speeds while at it.
And because you don't have Lion+ then even more reason to setup a small maintenace volume on another drive with OS X basic system for repairs. In fact you should always have a bootable backup or two you can rely on.
Restarting may work, or it may be you have now new issue with corrupt fies or directory that a safe boot even is no guarantee of fixing.
When in doubt, try a clean new OS install on another drive.
And FBDIMMs: $25 for a 2x2GB set on Amazon.com
You want to get the most out of what you have, a small investment in RAM, maybe recycle those drives for 2-4TB units. And an SSD will have system responding better and perform better.
My guess, the 5870 wasn't needed and was overkill and a 5770 for almost half would have been more than adequate.

Monitors going dark, then back on

Similar Messages

Maybe you are looking for