Yellow Tinge: Worth trying this?

Discussion in 'iMac' started by Sir Cecil, Jan 9, 2010.

  1. Sir Cecil macrumors 6502a

    Mar 31, 2008
    This may or may not be of value, depending if it has any affect with other people's iMacs. But I was VERY startled by it...

    A neighbor has a new iMac, 27". She wanted some help tonight with basic things like setting up preferences and stuff. Anyway... I couldn't help but notice yellow tinge. And more strong than the previously-replaced model of my own. I didn't mention it to her for fear of spoiling her excitement.
    What proved interesting however was this...

    We went through the desktop images to see which she liked and we came to the Apple BLACK AND WHITE images (seascapes etc) and then SPECIFICALLY the one with the jetty receding into the water. Please select THAT image on your own desktop for a few moments..

    ANY WHITE WINDOW OPENED ON THAT DESKTOP BACKGROUND (either totally white window or with color images within it) WAS TOTALLY FREE OF EVEN MINIMAL YELLOWING. The gray bars on the windows show absolutely NO WARMING or change of tone as they are moved down or across the screen. Totally even and without variation. I was quite amazed actually.
    The difference was DRAMATIC.
    Changing back to any color desktop image showed yellowing again, in any window as it was moved up and down or side to side on the screen.

    I'd be interested to know if this is happening with other people's iMacs. If it is, it would be very worthwhile taking a look. I don't see why it should be limited to the neighbor's computer I was looking at.

    Strangely, the same didn't happen when using a FLAT gray color desktop – just the photographic one.

  2. powerbook911 macrumors 68040


    Mar 15, 2005
    Thanks, I was happy to try it immediately.

    However, it didn't change the yellow tinge for me.

    Oddly, something about the background, actually made me notice the yellow tinge more, when I'd drag a white window down there.

    Nevertheless, I'll try anything! Thanks for sharing. It's a shame so many are living with this poor yellow tinge. You have to feel bad for people in a way, but I'm sure they still enjoy the computer.
  3. mtnDewFTW macrumors 6502a

    Oct 26, 2009
    San Francisco, CA
    You're so nice for not mentioning it :)
    So many people probably would have said it and ended up ruining the whole thing.

    But, no yellow here. Happy about that haha.

    But yeah, please try this. I wonder if it works.
  4. Sir Cecil thread starter macrumors 6502a

    Mar 31, 2008
    That's disappointing. I'd hoped I'd stumbled on something that might be of use. But I can only repeat that what I saw was like a cleansing of her whole screen.
    I hope this doesn't waste people's time, but I can only report what I saw...

    Thankfully, my own screen is fine so far (after 3 days only).
  5. OldCorpse macrumors 65816


    Dec 7, 2005
    compost heap
    Sir Cecil, could you please keep us up to date on how your iMac is doing? You've gotten a lot of flack, but I give you credit for honesty, i.e., if there is a problem, you are willing to admit it - sadly rare in online forums. While at it, would you mind checking off this list I keep - to see if anything here is relevant to your unit (and I'm ordering an i7 on 01/14/10):

    1)Screen - Stuck/Dead pixels
    2)Screen - Flickering screen, with brief blackouts
    3)Screen - Yellow smudge at the bottom/elsewhere
    4)Screen - LED backlight bleeding through in corners when screen is dark/black
    5)Screen - High pitch whine from screen at max brightness after 30 minutes; also after turning down brightness by 30%
    6)Screen - Dust or fingerprints trapped behind the monitor glass
    7)iSight - Dead pixels
    8)iMac as external monitor function not working
    9)Noisy HDD - clicking or whirring, rumbling and whining
    10)Constantly running fans at high volume
    11)Intermittent hiss from external speakers hooked up
    12)Frequent beachballs, despite not many programs running
    13)Slow boot up
    14)Random self generated restarts while using Firefox
    15)Airport problems
    16)Bad USB ports

    Thanks in advance!
  6. sparkie1984 macrumors 68020

    Dec 20, 2009
    a small village near London
    i know you didnt ask me but thought it may help??!

    1. none
    2. none so far but only in use for first time today
    3. unsure maybe a very very slight tinge about 6" in off bottom right not big or bothering me anyway
    4. slight bleeding in all corners
    5. none
    6. none
    7. 9 dead pixels, what the hell happens to these cameras???
    8. not used
    9. nope, western digital fitted.
    10. none
    11. none
    12. none
    13. none
    14. none
    15. none
    16. none.

    its a week 45, previous 2 were a week 48 and 49 and both flickered
  7. lexvo macrumors 65816

    Nov 11, 2009
    The Netherlands
    And here's my i5 (week 46):
    1) None as far as I can see
    2) None
    3) Yes
    4) None, or maybe very little, but nothing that disturbs me
    5) None
    6) None
    7) A few, but this is not important to me
    8) - (haven't tested)
    9) None, my Seagate is very quiet
    10) No
    11) No
    12) No
    13) No
    14) No
    15) - (didn't test)
    16) No

    All in all I'm quit happy with this iMac actually, provided Apple will fix the yellow tinge at some point.
  8. OldCorpse macrumors 65816


    Dec 7, 2005
    compost heap
    Thanks guys for the feedback! Anyone, feel free to join! The more the merrier - we'll get more data that way!
  9. Ptyger macrumors member


    Nov 20, 2008
    Knoxville, TN
    Week 2 i7, delivered 1/7
    1) No dead pixels
    2) No flickering or blackouts
    3) No yellow that I can see, and I HAVE done all the tests that I can find
    4) Small amount of backlight bleed in lower corners, though I hardly notice
    5) No whine at all, at any power setting
    6) No dust or fingerprints
    7) 8 dead pixels in iSight, don't care, never use it, hardly noticeable when I tested as they are spread out
    8) Not tested, as I do not have an external monitor with which to test
    9) Hard drive is quiet as a mouse
    10) Fans run at 900 -1000 RPM and can't be heard... ramp up to 2000 RPM at full load during handbrake encode and are still extremely quiet
    11) No hissing from external or internal speakers at any time
    12) One beachball only while starting up flash player in youtube the first time. None since.
    13) Boot up was quick after setting internal HD as default boot
    14) Not tested, prefer not to use Firefox as it has run slowly on MBP and mini
    15) Airport working flawlessly
    16) All USB ports working normally
  10. OldCorpse macrumors 65816


    Dec 7, 2005
    compost heap
    Ptyger, that's outrageous - how the heck did you get ahold of my iMac!?! I am ordering an i7 on 01/14/10, and it looks like you snagged it from under my nose... and I'll be left with a faulty one:mad:

    Enjoy your seemingly perfect iMac! :D
  11. Ptyger macrumors member


    Nov 20, 2008
    Knoxville, TN
    Good to see you'll be getting yours soon, though. I know you've been pining for one since they were announced. I hope you get one that meets your standards and that it remains all you want it to be.
  12. OldCorpse macrumors 65816


    Dec 7, 2005
    compost heap
    Thanks Ptyger. Actually, I'm willing to live with a tiny bit of yellow streak - nothing crazy, of course. I figure if everything else is fine, why risk the treadmill of endless exchanges? Of course if it flickers like crazy or sounds like a jet engine on take off, then that's a deal-breaker.

    Funny, as I already invested heavily in getting equipment that'll service the i7 - including a special mounting arm for $700, RAID enclosures for $1200, FW800 hub for $150 and so on. I don't have the computer, and I've already managed to spend almost $3000 on hardware and software.
  13. Sir Cecil thread starter macrumors 6502a

    Mar 31, 2008
    I rate the machine A1 after four days.
  14. Dino1956 macrumors member

    Mar 2, 2009

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