New 17" display problem

I just purchased my Imac today. After having it on for 20 minutes, the display changed. The colors are distorted and appear "surreal". The resolution is poor. Perhaps I accidently changed the display settings, but I can't figure out how to restore the defaut settings. I'm not sure it I can fix the problem or just return it.
Thanks!

rajmac
Welcome to Discussions
Go to: "Apple / System Preferences / Displays" then "Display" from the box showing Resolutions select "1440 x 900". I think that is the highest resolution for your 17' Mac. Also be sure "Colors:" box with the little black pointers is set to "Millions"
If your color is still off you can use the same "Displays" panel and select "Color" then in the "Display Profile" box try selecting a different profile.
Same answer as in your first post, if you use the "Report this Post" as a double it may be deleted!
Dennis

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    Hi G5 Gurus,
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    iMac G5 Mac OS X (10.4.8)
    la teller
    Posts: 1
    From: Los Angeles
    Registered: Jan 10, 2007
    Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
    Posted: Jan 10, 2007 2:21 PM in response to: Bad luck G5
    I have the EXACT same problem. In fact, I could not have described it better myself. What gives? I brought it in to the "genius" bar and they repolaced the power supply free of charge but the problem is still there. I noticed they ordered a new logic board but did not end up replacing it after all. Did you have yours replaced and did it work? Is this a known issue?
    imac G5 17 inch Mac OS X (10.3.9)
    Bad luck G5
    Posts: 8
    From: UK
    Registered: Jan 10, 2007
    Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
    Posted: Jan 11, 2007 1:20 PM in response to: la teller
    Hi La teller,
    Thank you for your reply. The 'genius' here in London only replace the dead hard disk, which I belive was a victim of this problem. I was told they couldn't find anything wrong with the power supply or the cooling system.
    Now at lest I know I am not the only bad luck guy. Let's wait and see if others are having the same problem. I am not sure if this is a known issue to Apple, even if it is, it may take years before they can offer a recall or free repaire. I noticed that some G5s have already been suffering from power problems and a free repaire was offered.
    Thank you again and hope Apple can take our concerns into their consideration soon.
    Songyan
    iMac G5 Mac OS X (10.4.8)
    stopha6
    Posts: 1
    From: US
    Registered: Jan 12, 2007
    Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
    Posted: Jan 12, 2007 7:43 AM in response to: Bad luck G5
    Hello,
    I'm also having this problem (fan running, won't come out of sleep), just spoke with an apple care rep. He confirmed my suspition that it was software, not hardware as I have just had the logic board and power supply replaced.
    His suggestions were to:
    1. Run disk repair from the startup CD
    try running OS X from a firewire drive and see if the same behavior happens or
    perform and archive and install.
    When the fan starts to run like that it means the OS is not communicating with the hardware properly. The OS could be somewhat corrupt if you were having hardware issues beforehand, hence the need for a reinstall. I will be performing an archive and install after the disk repair, I'll let you know if it fixes the problem!
    iMac G5 Mac OS X (10.4.8)
    Bad luck G5
    Posts: 8
    From: UK
    Registered: Jan 10, 2007
    Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
    Posted: Jan 14, 2007 12:52 PM in response to: stopha6
    Hi Stopha6,
    Thank you for your message. I never imagined it could be a software issue, cos it looked so hardware.
    Please keep me updated with your progress.
    By the way, as I said in my old posts, a hard disk went dead when this happened for the very first time, how do you read this?
    Thank you.
    Songyan
    iMac G5 Mac OS X (10.4.8)
    Bad luck G5
    Posts: 8
    From: UK
    Registered: Jan 10, 2007
    Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
    Posted: Jan 15, 2007 6:58 AM in response to: stopha6
    Hi Stopha6,
    After reading your reply again, I realized that the system had already been reinstalled. As I said when it happened for the first time, the hard disk died with it, which was replaced, of course with a new OS X, but the same problem is still happening. May this suggest that it is not just a software problem? Thank you. Songyan
    iMac G5 Mac OS X (10.4.8)
    AG-Nate
    Posts: 5
    From: Pismo Beach,CA
    Registered: Aug 26, 2006
    Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
    Posted: Jan 14, 2007 3:38 PM in response to: Bad luck G5
    The Fans going at full is only because you have an application that is using a lot of cpu power and therefore causing the imac to heat up so it turns the fans on. The screen-saver and sleep problem you describe sounds like something that may just happen on accident. But this sounds mostly like a software problem. Try making sure to always quit all non-apple products and see if anything changes.
    eMac, iMacG5 Mac OS X (10.4.7) 800mhz 1gig ram, 2ghz 2gigs of ram
    Bad luck G5
    Posts: 8
    From: UK
    Registered: Jan 10, 2007
    Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
    Posted: Jan 15, 2007 6:50 AM in response to: AG-Nate
    Thank you, Ag-Nate. I will try as you adivised but I con't think the fans were activeted my intensive CPU using. In most of the cases, the problems happened when the Mac was sleeping, when the minimum CPU were being used.
    iMac G5 Mac OS X (10.4.8)
    Timothy Klein
    Posts: 15
    From: Denver, CO, USA
    Registered: Dec 6, 2004
    Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
    Posted: Jan 31, 2007 1:02 PM in response to: AG-Nate
    "The Fans going at full is only because you have an application that is using a lot of cpu power and therefore causing the imac to heat up so it turns the fans on."
    That's only partly right. A hard-working process will make the fans run at high speed, of course.
    But, the OS is in touch with the firmware of the iMac, telling it how to run the fans, based upon information the OS X kernel is getting about the state of the hardware.
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    So it may not be so simple as a hard-working cpu process kicking the fans on.
    iMac G5 17" 1.6 GHz Rev. A Mac OS X (10.4.8) 1 GB Ram
    Kensall
    Posts: 2
    From: London, England
    Registered: Feb 2, 2007
    Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
    Posted: Feb 2, 2007 9:05 AM in response to: Timothy Klein
    Hi I have a 20" G5 imac it's about 18 months old and I am having the same problem, It freezes and the fan runs really loud. It's nothing to do with software as my I.T. guy has done a complete re-install. All of our admin people have imacs of differring ages and the flat panels are all OK but every one of the G5s has had a booting problem. Some fell into the recall for replacement logic boards but the one I have at home is the newest and doesn't. I'm waiting for my apple reseller to get back to me, but it looks like it's the logic board and as none of the serial numbers fall into the recall, I'm expecting a big bill. I'm really disappointed as I've been a professional apple user for over 15 years and have grown to expect a certain amount of honesty and integrity from them. Looking at all of the discussion boards and the amount of people complaining of the same problem the logic boards are defective and apple should be replacing these free of charge.
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    a brody
    Posts: 15,170
    From: Silver Spring, Maryland. Don't forget to backup your data!
    Registered: Dec 23, 2000
    Re: What's the problem? Display? Power supply? Cooling? My G5's gone mad
    Posted: Feb 2, 2007 10:27 AM in response to: Kensall
    Kensall,
    Welcome to Apple Discussions!
    As in the other thread I wrote:
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    http://www.apple.com/uk/support/imac/powersupply/repairextension/
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    http://discussions.apple.com/forum.jspa?forumID=881
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    iMac C2D 2.17/20 inch/iMac G5 1.8 1st gen/iMac G4 800 Mac OS 9 Mac OS X (10.4.8) EyeTV 200, Canon PS A530 , Epson P-R220, iSight, Airport Extreme, 5th Gen iPod

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    iMac G5   Mac OS X (10.4.4)  

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