20" iMac screen washed out on bottom corners, Tech says normal?

Ok, I have been through all the monitor issues with the 20" iMac G5s... many posts about the ghosted line along the bottom.... anyway
My new Intel 20" iMac has a different issue that I don't know if it is normal or not? I use a small free app called PiXel Check http://homepage.mac.com/macguitar/FileSharing16.html
to check a screen for bad or stuck pixels. In the all Black screen I have these two ghosted triangles on both corners of the machine that fade upwards to the middle of the screen. Dead center on the bottom of the screen, about 4-5" wide is dead black, but as you go along to each corner it gets very lite. It looks like the edge of the screen is missing black paint or something and is allowing bleed from the tubes.
I don't know if it is possible to capture this to show, but I will see if it is possible and post it. I went in to the Apple store and asked them about it and they said that since these are not Pro machines you should not expect perfection and that this sounds pretty normal for iMacs.
I sure hate that response. Gee, sorry you didn't spend more money, then you would get a machine that is near perfect... crap.
Anyway, is anyone else having issues like this? At first it may seem like reflection from the keyborad or desktop, but if you turn off the lights or get it pitch black and set the screen to total black, it shows very easily.
Ok, end of long post so pleas post if you are seeing this or anything like this.
thanks,
Cory
20" G5 iMac and 12" PowerBook G4 Mac OS X (10.4.6)

Hello Cory,
A problem that is common to some LCD displays is backlight leakage. If pressure is put on the display, you can end up crushing some of the pixels. Sometimes the display doesn't flex back, leaving the user with dark spots or bright spots in some areas. This can also result from a manufacturing defect within the LCD.
Did you accidentally put too much pressure on the display, or is this truly a manufacturing defect we are looking at?
Calling AppleCare about this is definitely the right move, however.
Good Luck finding a solution to your problem.

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<Edited by Moderator>

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And an Etrecheck
Problem description:
iMac screen blacks out in yosemite
EtreCheck version: 2.1.8 (121)
Report generated 1April, 2015 at 15:20:46 GMT+3
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Click for support] links for help with non-Apple products.
Click the [Click for details] links for more information about that line.
Hardware Information: ℹ️
    iMac (27-inch, Late 2009) (Technical Specifications)
    iMac - model: iMac10,1
    1 3.06 GHz Intel Core 2 Duo CPU: 2-core
    8 GB RAM Upgradeable
        BANK 0/DIMM0
            2 GB DDR3 1067 MHz ok
        BANK 1/DIMM0
            2 GB DDR3 1067 MHz ok
        BANK 0/DIMM1
            2 GB DDR3 1067 MHz ok
        BANK 1/DIMM1
            2 GB DDR3 1067 MHz ok
    Bluetooth: Old - Handoff/Airdrop2 not supported
    Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
    ATI Radeon HD 4850 - VRAM: 512 MB
        iMac 2560 x 1440
System Software: ℹ️
    OS X 10.10.2 (14C1514) - Time since boot: 1:12:55
Disk Information: ℹ️
    Hitachi HDE721010SLA330 disk0 : (1 TB)
        EFI (disk0s1) <not mounted> : 210 MB
        Macintosh HD (disk0s2) / : 999.21 GB (554.08 GB free)
        Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
    OPTIARC DVD RW AD-5680H
USB Information: ℹ️
    Logitech USB Receiver
    Apple Inc. Built-in iSight
    Generic USB Storage
    Apple Internal Memory Card Reader
    Microsoft Wired Keyboard 600
    Apple Computer, Inc. IR Receiver
    Apple Inc. BRCM2046 Hub
        Apple Inc. Bluetooth USB Host Controller
Gatekeeper: ℹ️
    Anywhere
Kernel Extensions: ℹ️
        /Library/Application Support/Avast/components/fileshield/unsigned
    [loaded]    com.avast.AvastFileShield (2.1.0 - SDK 10.10) [Click for support]
        /Library/Application Support/Avast/components/proxy/unsigned
    [loaded]    com.avast.PacketForwarder (2.0 - SDK 10.10) [Click for support]
        /Library/Extensions
    [loaded]    com.driver.LogJoystick (2.0 - SDK 10.9) [Click for support]
    [loaded]    com.logitech.driver.LogiGamingMouseFilter (1 - SDK 10.8) [Click for support]
        /Users/[redacted]/Library/Services/ToastIt.service/Contents/MacOS
    [not loaded]    com.roxio.TDIXController (2.0) [Click for support]
Startup Items: ℹ️
    TuxeraNTFSUnmountHelper: Path: /Library/StartupItems/TuxeraNTFSUnmountHelper
    Startup items are obsolete in OS X Yosemite
Launch Agents: ℹ️
    [not loaded]    com.adobe.AAM.Updater-1.0.plist [Click for support]
    [running]    com.avast.update-agent.plist [Click for support]
    [loaded]    com.avast.userinit.plist [Click for support]
    [running]    com.bjango.istatmenusagent.plist [Click for support]
    [running]    com.bjango.istatmenusnotifications.plist [Click for support]
Launch Daemons: ℹ️
    [loaded]    com.adobe.fpsaud.plist [Click for support]
    [loaded]    com.avast.init.plist [Click for support]
    [loaded]    com.avast.uninstall.plist [Click for support]
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    [loaded]    com.torch.update.agent.plist [Click for support]
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    [loaded]    com.adobe.AAM.Updater-1.0.plist [Click for support]
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    QuickTime Plugin: Version: 7.7.3
    Flash Player: Version: 17.0.0.134 - SDK 10.6 [Click for support]
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    AllMyTube
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Audio Plug-ins: ℹ️
    DVCPROHDAudio: Version: 1.3.2
3rd Party Preference Panes: ℹ️
    Flash Player [Click for support]
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Time Machine: ℹ️
    Time Machine not configured!
Top Processes by CPU: ℹ️
         9%    mds
         5%    WindowServer
         3%    storedownloadd
         3%    MacsFanControl
         2%    com.avast.proxy
Top Processes by Memory: ℹ️
    438 MB    softwareupdated
    292 MB    Safari
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Virtual Memory Information: ℹ️
    3.28 GB    Free RAM
    3.84 GB    Active RAM
    624 MB    Inactive RAM
    739 MB    Wired RAM
    2.52 GB    Page-ins
    53 MB    Page-outs
Diagnostics Information: ℹ️
    Apr 1, 2015, 02:05:41 PM    Self test - passed
    Apr 1, 2015, 11:51:03 AM    /Library/Logs/DiagnosticReports/com.apple.AmbientDisplayAgent_2015-04-01-115103 _[redacted].crash
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