20" iMac Intel Core 2 Duo Display problems.

It was hard trying to sum up my problem for the thread title... so let me try and describe what I am experiencing a bit more clearly.

I have recently acquired a 20" iMac Intel Core 2 Duo,2 GHz(aluminum body black plastic back)-with display issues...
The problem is basically that there appears to be no happy middle ground in regards to contrast- it is either WAY too white or WAY too black... I would have to say it is more of an issue with CONTRAST than brightness, it appears that nothing I can do in calibrating the screen really matters.
I have calibrated displays before and never had this sort of issue. It is pretty bad (for example): a royal blue appears as black or gray mac highlight color choice appears as black.... white and medium grays appear indistinguishable.
all this in addition to the fact that there appears to be a gradient to the screen when you display a solid color neutral back ground, not too mention that it is VERY hard to look at this screen for very long and for what I do( 3D model making and texture creation) the display is pretty useless.

I have read about similar issues with this model's screen at other sites, but most of the threads ended without being resolved and were more than a year old.

This machine belonged to my in-laws and according to them, it always looked this way and when they took to back to the Apple store few weeks after purchasing it( brand new), they were told there was "nothing wrong with the display, it's supposed to look that way"... the machine was hardly used(just for iChating with our infant daughters), so I don't really think it is an issue with age or anything.

Now here is the really weird part:
I just upgraded the OS from 10.4 to 10.5 and when the machine first displayed the default 10.5 background(the Nebula one... blueish-pink with stars)... as it was going though the start up IT LOOKED RIGHT.
Once everything was done and all my icons appeared- Boom! Back to ugly.
I have noticed the same thing occur if I shut down the machine.
Startup screen, the default (nebula)background(my choice of background) comes up... it looks fine, the icons start to show up... everything still looks good and then when everything is done... BAM! UGLY!

I'm not sure what to make of this... any suggestions

One last thing- I am VERY familiar with the default background for OS 10.5, I have used it on my iMac G5 for over 2 years. When I say the displayed "looked right" I mean, it looked like what I was used to and how it appears on other machines.

Thank you in advance for any help or suggestions.

iMac Intel Core 2 Duo, Mac OS X (10.5.8)

Posted on Nov 24, 2010 10:16 AM

Reply
3 replies

Nov 24, 2010 10:40 AM in response to theycallmemcgyver

mcgyver,

If start up and shut down look correct then something is set or corrupt in the user options. To test this, add a new user and signon as them.

Regards

Edit: I don't use 10.5.8 anymore so the following suggestions are for 10.6.5.
The things that may affect your display are:

System Preferences > Universal Access > Seeing Tab. Display: Make sure Enhance contrast slider is set to normal. Use grayscale is unchecked.

System Preferences > Displays > Color tab > Display profile set to display or iMac. Whatever the default is on your system.

Message was edited by: captfred

Nov 24, 2010 11:12 AM in response to captfred

THANK YOU captfred!!

Holy freakin' cow! That worked!
"System Preferences > Universal Access > Seeing Tab. Display: Make sure Enhance contrast slider is set to normal. Use grayscale is unchecked."... was what worked,to be precise.

Never in a million years would I have thought to look in Universal Access for the contrast controls.
A bit like locating the windshield wiper controls in the the trunk,under the spare tire.

THANK YOU! Thank you for knowing this and thank you for the help.

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20" iMac Intel Core 2 Duo Display problems.

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