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Jan Sampermans

Q: New iMac 27inch screen flickering/tearing/shutoff

I have been experiencing some problems with the all new iMac 27inch display.
At non-fixed intervals i will get one of the following:

Screen distortion/flicker somewhere random in the screen (feels like it is more in the lower part) that looks like a horizontal bar of about 2-3inches just popping in and out of the screen.

Screen will go completely black for a second and then come back on. Sometimes 2-3 times in a row.

Somebody else already made some video-clips about these problems, I am experiencing exactly the same behaviour.

http://www.youtube.com/watch?v=SjOxlxVz5Os
http://gallery.me.com/larzy#100025

Just to not that in the course of writing this post my screen has flickered 13 times and has gone black 2 times.

iMac 27inch 3Ghz 4GB 1TB ATI 4670, Mac OS X (10.6.1)

Posted on Oct 27, 2009 3:56 AM

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Q: New iMac 27inch screen flickering/tearing/shutoff

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  • by Warren Beasley,

    Warren Beasley Warren Beasley Jan 22, 2010 12:02 AM in response to pazuita
    Level 1 (0 points)
    Jan 22, 2010 12:02 AM in response to pazuita
    Pazuita,

    Thou shalt not brag.

    Thou shalt not fuel the fire.

    Thou shalt only take out thy can of bug spray and spray when the critters afflict.

    You get my drift?
  • by atlatnesiti,

    atlatnesiti atlatnesiti Jan 22, 2010 1:27 AM in response to pazuita
    Level 1 (5 points)
    Jan 22, 2010 1:27 AM in response to pazuita
    pazuita wrote:
    I guess you guys all noticed atlatnesiti bragging again.

    Can't say I blame him, I hope to be doing the same thing in a few weeks. I have to listen to that all of the time.

    I have a group of friends, about fifty or so in number that are all avid Mac users. Most of them are fairly recent converts after I spent years of hammering them to switch. More than a dozen of them have bought 27"ers in the last couple of months.

    After all of the years I have spent bragging to them about Apple quality, and reliability, they switched, and guess what.

    They all got good machines, I got two bad ones in a row. I'll never hear the end of it.

    Yes I an (bragging again) and what are you guys calling this thread again..?!
    Sorry that my i7 iMac is perfect.
    I will not post here again (no need).
    Bye
  • by Reinhard Schlieker,

    Reinhard Schlieker Reinhard Schlieker Jan 22, 2010 1:55 AM in response to Rick Lang
    Level 1 (60 points)
    Jan 22, 2010 1:55 AM in response to Rick Lang
    Rick, thanks a lot for the explanation. So this is something that has nothing to do with our little problem here...
  • by Reinhard Schlieker,

    Reinhard Schlieker Reinhard Schlieker Jan 22, 2010 2:01 AM in response to Warren Beasley
    Level 1 (60 points)
    Jan 22, 2010 2:01 AM in response to Warren Beasley
    I would not put up with these dead pixels. It would be a compromise that is not necessary. Aplle will surely listen given what people go through here.

    I checked my new iMac first thing and there are no dead pixels at all.
  • by MistaSmiff,

    MistaSmiff MistaSmiff Jan 22, 2010 2:01 AM in response to Gable31
    Level 1 (0 points)
    Jan 22, 2010 2:01 AM in response to Gable31
    Guys, I have just been informed by Apple Technical Support that there is a confirmed defect with the new iMACS, this includes the 21 and 27 inch screens.

    The new batch of iMACS will be released February 5th/6th.

    ..gives me more time to sell my Mac Mini
  • by Paul_31,

    Paul_31 Paul_31 Jan 22, 2010 2:05 AM in response to MistaSmiff
    Level 6 (13,932 points)
    Jan 22, 2010 2:05 AM in response to MistaSmiff
    Interesting. I don't suppose they elaborated on what the actual defect is. No, I thought not
  • by faxao,

    faxao faxao Jan 22, 2010 2:09 AM in response to MistaSmiff
    Level 1 (0 points)
    Jan 22, 2010 2:09 AM in response to MistaSmiff
    WOW....finally they admit !
  • by atlatnesiti,

    atlatnesiti atlatnesiti Jan 22, 2010 2:51 AM in response to Jan Sampermans
    Level 1 (5 points)
    Jan 22, 2010 2:51 AM in response to Jan Sampermans
    Sorry guys and girls to "disappoint" you all, but my week 47 i7 iMac received in mid November is still going strong
    BTW; I bet it is the same for the other few million of "Late 2009" iMac users.
  • by Paul_31,

    Paul_31 Paul_31 Jan 22, 2010 2:59 AM in response to atlatnesiti
    Level 6 (13,932 points)
    Jan 22, 2010 2:59 AM in response to atlatnesiti
    I know I shouldn't bite, but I wish you'd follow through with your excellent news earlier today that you are not going to post anymore. Can't believe a word you say

    Message was edited by: Paul_31
  • by mujanast,

    mujanast mujanast Jan 22, 2010 3:22 AM in response to MistaSmiff
    Level 1 (0 points)
    Jan 22, 2010 3:22 AM in response to MistaSmiff
    Good that Apple tech support acknowledges a defect with the iMacs.
    I wonder what Apple will do with the group that has a case ID and waits for sending in their machines for reparation (as is my case)....already owning their iMacs for more than 2 weeks.
  • by ChicoMac,

    ChicoMac ChicoMac Jan 22, 2010 3:40 AM in response to MistaSmiff
    Level 1 (0 points)
    Jan 22, 2010 3:40 AM in response to MistaSmiff
    MistaSmiff wrote:
    Guys, I have just been informed by Apple Technical Support that there is a confirmed defect with the new iMACS, this includes the 21 and 27 inch screens.

    The new batch of iMACS will be released February 5th/6th.

    ..gives me more time to sell my Mac Mini


    I hope they have fixed the problems! Did they say if I buy an iMac today it will be a new one from february 5th? Because there is a shipping delay of a few weeks! Here in Brazil there is a shipping delay of 5 to 7 weeks!

    Message was edited by: ChicoMac
  • by ady-baby,

    ady-baby ady-baby Jan 22, 2010 4:06 AM in response to Jan Sampermans
    Level 1 (0 points)
    Jan 22, 2010 4:06 AM in response to Jan Sampermans
    Haha! The plot thickens..!!
    Guys, just to give you an update: I just spoke to Apple Aftersales about refunding/returning my 27" iMac and asked if they could guarantee that the latest models being shipped in the next 2 - 3 weeks have resolved the flickering issues. She said that "yes, I think they have. Would you like to speak to a support tech?"
    "Yes please" I said!
    I then spoke to a guy from Support who quite FIRMLY, CONFIDENTLY and CATEGORICALLY told me that YES the new models would be fine and the problem has been resolved.
    There were no "ifs", no "buts"..... just "yes".

    Hurrah! So far, so good....

    I was then transferred back to Aftersales to confirm a replacement model.
    I told the guy that I was reassured that the latest models were working fine & fault-free and could I order a replacement - to which he seemed quite alarmed and said there is NO way he can guarantee the issue has been resolved and my new model would be fault-free!
    He said: "I'd love to know who told you that..!!"

    So, there you have it....

    Forever the optimist, I'm going to trust in the information given by Apple Support - he seemed very confident. I should be receiving my new iMac 27" in the next 2 - 3 weeks.

    Fingers crossed there will be a happy ending to this fairy tale!

    I'll stayed tuned to this thread to check for updates - and report back in a few weeks to give my verdict.

    Until then, I'm bowing out for the time being...

    I hope this information is helpful to you.

    Good luck!!
  • by spurv2,

    spurv2 spurv2 Jan 22, 2010 4:26 AM in response to faxao
    Level 1 (0 points)
    Jan 22, 2010 4:26 AM in response to faxao
    Officially, they havent admitted anything.
  • by Michael Weber,

    Michael Weber Michael Weber Jan 22, 2010 5:20 AM in response to Jan Sampermans
    Level 1 (0 points)
    Jan 22, 2010 5:20 AM in response to Jan Sampermans
    Here's an interesting (and frustrating) addition: I received my iMac after the holidays and experienced flickering several times. I contacted tech support who put me in touch with an Apple engineer who stated she would assist me in my case. She provided software to "capture" the event and encouraged me to take video of the issue. I did all of this and emailed her the results 2 weeks ago. I have since followed up with 4 (FOUR) phone calls (days apart) with no response. None.

    Is Apple suddenly ignoring the issue? Are they at a loss? This engineer's voicemail did not indicate vacation....

    Uggh!
  • by MistaSmiff,

    MistaSmiff MistaSmiff Jan 22, 2010 5:27 AM in response to ady-baby
    Level 1 (0 points)
    Jan 22, 2010 5:27 AM in response to ady-baby
    ..maybe this "DELAY in Delivery" they have is actually them getting their act together behind the scenes by replacing the defective models with the 'New' ones ???

    If you need one now I would say buy one as they are not ALL faulty

    My local Apple Store have hundreds in stock so I will address this with them this weekend face to face, and update this thread.
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