IMac Monitor Problems

Today I was using my iMac G5 and all of a sudden the monitor started blinking and the colors turned to almost a negative and the screen went all staticy. Now its been doing this off and on. Even when its sitting being unused it will start flashing and I'll get rolling bars of static, almost like trying to tune in a TV with rabbit-ears.
Has anyone experienced this before?
I've had the computer for about 18 months now.

Welcome to Discussions - try resetting both your SMU and your PRAM. Remove all peripherals except for your keyboard and mouse.
Ket us know how you make out, there are other things you can try if these don't work.

Similar Messages

  • Help!  iMac monitor problem

    I was online downloading and reading emails when all of a sudden, long pixels the length of my screen and in varying widths in various colors appeared on my screen obscuring the desktop. When I move my mouse, the pointer became scrambled and whereever I move my mouse over to, the image under it gets scrambled with glitchy pixelated graphics. I was downloading emails at the time so I thought perhaps its some kind of virus but I hadn't opened any email attachments. I quickly forced my computer to shutdown, holding down the power button and restarted. Same thing happens, the whole screen has the long bars with various widths, looking glitched. I put in an OS X install disk and restarted from that, and it appears to be ok while starting up from it which lead me to believe its a software/hard disk problem. But after I re-installed OS X and restarted again to read the system software off the hard disk, the pixelation came back. I couldn't get to my desktop using OS X install disk so I had to restart using the original system 9 disk (no screen problems here as well) that came with my iMac for it will allow me to go in back up some of my files from desktop first because it seems like I would have to re-initialize my hard disk and re-install everything. Anyone have any insight on this?
    iMac 500 mhz SE DV (snow) Mac OS X (10.4.9)
    iMac SE DV   Mac OS X (10.4.9)  

    okie dokie...now i'm really scratchin' my head on this one: since i last posted, i just left the computer alone to rest and just recently i tried to start up the computer using the OS x system that in the computer already . i got to the white apple screen, (no pixelation, just like normal) and the little pin-wheel thingy spins for like 5 - 10 mins then a black blue screen with a white box with pixelation which i'm thinking is the arrow. when I move the mouse it doesn't move. then i did a force shutdown. when i tried again to start up from the system 9 disk that came with the computer, the start up screen with color bar pops up (no pixelation, as normal), then as the color bar is almost filled, then comes a black/blank/dead screen. What do you guys think it is now?
    I guess the only thing i can do now because I can't see properly what's on the screen, is take the harddrive out and hook it as an external drive to get the files I need out of it. does anyone know if its possible with these harddrives?

  • IMac Monitor not working properly

    My iMac 24 monitor has started acting strangely.  I hve what looks like snow or flickering across the whole screen.  I tried rebooting and at the Applw startup screen the scrrne is covered with noise and the Apple lgo is semi duplicated higher on the screen.  It seems to bootup and then the screen realy goes crasies with black blocks in 4 columns on the right side of the screen.
    looks like a monitor problem.  I tried unplugging everyting and startw ith shift key.  no luck, same thing.
    Any suggestions other than take to Apple.  It is a 2008 unit so it is outside of warranty....
    I think I have uptodate backups of most of info using time machine.  I may be missing a bit from Parallels, but should be enough to get back.
    I currently have it unplugged to see if cooling it down helps.  I am guessing graphics card is ...
    It was not overheated when this occurred, I had just started it from sleep mode...

    You're likely correct in that it could be a failed/failing graphics card but you could try a couple of things that might help, if you haven't already. Sounds like you have backup organised - you may need it.
    Are you really running 10.8.2, as per your profile - 10.8.4 is the current version? Applying the combo will bring you up-to-date with the OS: http://support.apple.com/kb/DL1659
    Try a Safe Boot: http://support.apple.com/kb/HT1564 - once booted restart as normal from the Apple menu.
    Boot into the Recovery HD and run Disk Utility to see if any repairs are required. Restart holding down Command = r - more info here: http://support.apple.com/kb/HT4718

  • IMac monitor mess

    The week for before Christmas 2005 I got a new iMac G5 iSight. From the first boot the monitor sucked--staticky, multiple docks, triple finder menus, etc. After about 30 seconds the screen problems stopped and the Mac behaved as it should.
    I took it to one Mac retailer/service department and they said they couldn't duplicate the problem. I brought it home and the same effects were happening. So I took the computer to another Mac service department, about two hours away.
    They replaced the logic board, and now the monitor problems are worse than ever. The static is on screen and doesn't disappear after 30 seconds like before. My finder menu shows up below (underneath) the dock. Despite maybe an hour or two of use since purchasing last month--it appears there are ghosts/burned images in the screen. Like files and stickies notes.
    Since Apple service centers can't seem to figure this one out, and technical suppport + "chat" guys are no help at all...anybody have any ideas?

    Is there a reason that you haven't tried calling Apple? Chat support is fine, but I like to talk to someone instead.
    As far as Apple service centers go, I like to deal with the source so I would stick to Apple Stores or AppleCare.
    The host images are something that can happen with any LCD screen. If it is what I think it is, it should go away rather soon. I tend to put windows in the same place when I use my Mac, so it happens to me often, but dissappears quickly also.
    I think you have a pretty clear case of a DOA Mac and should not settle for another repair. It never worked, you tried a fix and now it is worse. Contact Apple Consumer Relations and get a replacement.

  • IMac monitor has a dark vertical section

    Our iMac monitor has a dark vertical section across the left middle of the display, obscuring anything that is supposed to be displayed on a given web page or program such as photoshop. Is this a hardware problem that is beyond the scope of home repair?

    Indeed that is a problem with LCD screen. Your iMac is a 2009 model? I have seen quite a few of these burnt LCD screens on the older design of the iMacs. There have also been a few found on the 2011 design as well         (essentially) more or less the same case.
    Nice thing is that getting the screen replaced isn't too big a problem, but the installation process really requires an Authorized Tec.
    Are you still on AppleCare?
    http://www.macpartsonline.com/imac-parts/imac-aluminum-27-inch.html
    This screen was manufactured by LG display and it was widely known that the heat from the processor and Graphics card caused the screen to overheat. The result is damaged screen seen as either a vertical stripe or dead spots.

  • Display discoloration on the left side of my iMac monitor.

    I recently notice a dim discoloration on the left side of my iMac monitor. From top to bottom and about 1/8 of the screen. Kinda like a faint burn but has not a distinguishable image just seem to be wavy lines up and down and starts happening as soon as I bootup. Is this common and will my applecare cover a replacement?

    I'm not even sure why you posting on a help forum when you have AppleCare, the first thing I'd recommend you do is   pick up the phone and call AppleCare, describe the problem and they will advise how to proceed. It's that simple, follow the directions they provide and the issue should be handled.

  • My iMac monitor will flash sometimes.

    My iMac monitor got some problem.
    It won't turn on during startup but it will turn on after a minute.
    Sometimes, my iMac monitor will flash suddenly.
    What's the problem?
    Message was edited by: itgoodlonglong

    Turn off the iMac, unplug the power cord for 30 seconds.  Plug it back in...  Hold down the COMM+Option+P+R keys when you turn the iMac back on, kept them held down.  When you hear the starup chime twice, let go of the keys.
    If this does not work, make sure you have unplugged all external devices and reboot again.
    If that all does not work, take her into a ARS...
    Hope this helps.

  • Possibly mundane Mini-DVI to VGA into an external monitor problem

    Hi,
    I've had a look over the interwebs regarding my problem and it seems as if it's not unusual to have external monitor problems but I'm not sure if mine is slightly different:
    I had a perfectly working set up with my new Macbook (the white one, '06 model I believe), that was connected to my Hanns-G HU196D monitor via a mini-DVI to VGA adapter, no problems whatsoever. But for a couple of weeks now my Macbook just flickers a light blue colour, with nothing at all on the monitor, and my macbook is unusable until I remove the adapter. I've read about updating firmware but I can't see my desktop once the macbook is connected to the monitor so it's not possible to configure anything. I've read somewhere that my external monitor isn't compatible with this set up, but it was until a couple of weeks ago!
    My Macbook's 4 months old now and since then I've bought a new mini-dvi to vga adapter and a new VGA cable, no connections seem loose on either mini-dvi port or my monitor's vga port.
    Thanks if you can help!
    Jack

    You will need to use a mini Dvi-dvi and a dvi-svideo/rca adapter.
    Joy joy hallelujah.
    Pardon the sarcasm...I just wasted 3 hours of my life trying to sort the issue out.
    Heard a KWORLD PlusTV PCTOTV Converter SA235 USB 2.0 Interface would sort the issue out for under 40$ but it's not Mac.
    Hope that helps.
    ~r

  • HT1529 how could i connect a xbox 360 to imac monitor?

    i would like to connect my xbox to my imac monitor to use it as a display.

    In general you would unplug the monitor from the Mac Pro and then directly connect the monitor to the xBox 360 (with the correct adapter cable, depending on which version of the xBox 360 you have). However, if you don't have permission from the owner of the lab to be connecting and disconnecting cables you shouldn't be doing that. Buy a cheap 1080p TV and use your xBox 360 at home.

  • Can I connect Mac mini to iMac monitor

    Can I connect a Mac mini to iMac monitor ? To view Mac mini files

    Hi Ricemail,
    You *may* be able to do so, depending on the specific models of your iMac and Mac Mini, using a feature known as Target Display Mode. You may find the following article helpful:
    Target Display Mode: Frequently Asked Questions (FAQ)
    http://support.apple.com/kb/ht3924
    Regards,
    - Brenden

  • How to share iMac monitor

    I have a G3 B/W with a CRT monitor OS 10.3.
    I also have a iMac 20” OS 10.4
    How can connect both the G3 and imac so that I share the iMac monitor with the G3 CPU? I would like to get rid of the CRT.
    If this is possible would I use only one keyboard, or would I still have to use 2 keyboards?
    Thanks
    Happy 2009

    These machines cannot share a display. No iMac—which is a completely integrated computer and display system—can be used in place of the display with another computer.
    What you can do is run a 'headless' configuration: one in which your Power Macintosh G4 does not have a display, but is otherwise operable. Using a product like Apple Remote Desktop, you can control that machine from your iMac remotely.
    There is a discussion are for ARD located here.

  • Can I use the iMac monitor to watch TV?

    Am I able to connect the cable to the iMAC monitor so I may watch TV?

    Yes but you need some third party hardware to do so, visit www.elgato.com and select a tuner for your needs.

  • Use imac monitor with ps3 or wii

    Hi all,
    I have an imac 24" and i have wii and ps3.
    Which device can I use to connect my imac monitor to these console?
    I saw on the web the Elgato Hybrid device, but isn't the right solution for ps3.
    Best regards...

    you can get the canopus ADVC110 and plug in the yellow RGB cable into it, then plug the device via firewire 400 into your computer. then open up iMovie 09 and press import video, but don't record or anything. just play.

  • Use imac monitor for laptop display?

    Just curious, I've got a new mac book pro but the screen size just isn't sufficient for some applications. My 24" imac works great for it, but since this is my work laptop I'm not supposed to put these files on my home computer (not to mention the programs). So, I want to know if there is any way to use my imac monitor as a display for my laptop.
    I know there isn't just a DVI in port on the imac, but there's got to be a way to do this... If it were a PC I'd say remote desktop.

    christie.cone, Welcome to the discussion area!
    Not directly the iMac does NOT have a video input.
    However, you might want to take a look at ScreenRecycler.

  • HT201343 can i turn off my imac monitor while airplay from it to my tv?

    can i turn off my imac monitor while airplay from it to my tv?

    You can just turn your brightness down to 0.  Only thing I have figured out so far.

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