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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 Brian_1338,

    Brian_1338 Brian_1338 Jan 25, 2010 10:44 PM in response to pazuita
    Level 1 (4 points)
    Jan 25, 2010 10:44 PM in response to pazuita
    pazuita wrote:
    Dino........3.3million Macs...........1.234 million desktops, of course that does include the MacMini, and MacPro, but the iMacs outsell them well over ten to one.


    What's your source for 10 to 1?

    Also - thanks to the earnings report, we can now safely refute your earlier estimate - "Even if Apple only sold 1 million 27" models....... 1% would be 10,000 defective units......... and only 588 of them posted on the web.......not likely."

    They clearly have not sold anywhere near 1 million 27" iMacs.

    pazuita wrote:
    That would change sundisks percentage to roughly 1/10 of a percent, although, I would suspect the number was actually slightly higher.


    sundisk is dividing the total number of posts in this thread by a guess of the number of units sold. Surely even the most creative Apple apologist sees a hole large enough to drive a truck through with that approach. It's not representative in any way.

    pazuita wrote:
    The unusual thing about todays Sales figures release, lots of questions asked by the media, analysts, and techies, not one single question that I have heard of about flickering or yellowing.......

    That should add a little perspective to the issue, for those who are interested.


    C'mon - I read the transcript, and every single question was asked by someone in i-banking with questions ranging from free cash flow all the way to (get ready for it) financial models. (And note that they only take ~10 questions from folks pre-selected in advance.) There hasn't been nearly enough media attention - nor a visible impact on sales - to justify a question like that getting asked by Citigroup or Morgan Stanley. Doesn't really add any perspective.

    I really wonder why you try so very hard to make it seem like there's nothing to see here, everyone move along.
  • by yukia,

    yukia yukia Jan 25, 2010 10:57 PM in response to Brian_1338
    Level 1 (0 points)
    Jan 25, 2010 10:57 PM in response to Brian_1338
    i've been watching for how apple deal with this iMac display problem for 2 months, but it seems that the problem still exists in some iMac 27". That's depressing 'coz i just want iMac so bad since the day it's released.
    If it's not the pannel manufacturing causes the problem, software problem should have been sovled at least a couple weeks after discovering the flicking/blackoff disaster.
    hope it will be announced that all problem comes to a solution by Steve @tomorrow's presentation.
  • by spurv2,

    spurv2 spurv2 Jan 25, 2010 11:39 PM in response to pazuita
    Level 1 (0 points)
    Jan 25, 2010 11:39 PM in response to pazuita
    Pazuita: yes, I am aware. Dont know why, but when getting a brand new computer with a virgin HD, I just prefer installing applications from scratch. Have had too many problems with corrupted files, permissions etc. in the past (though the majority of said problems may come from my PC days). I do, however, transfer settings from the old iMac to the new one, cause its just too much hassle and takes way too much time recreating those.
  • by pazuita,

    pazuita pazuita Jan 25, 2010 11:56 PM in response to Brian_1338
    Level 1 (20 points)
    Jan 25, 2010 11:56 PM in response to Brian_1338
    Brian.......

    "They clearly have not sold anywhere near 1 million 27" iMacs."

    What is your source?

    Do you even have a source for anything? Funny pages do not count.

    Your predictions of 150,000 of the new models sold is clearly ridiculous. why do you persist?

    That would have to mean that both MacMini's and MacPro's outsold the iMacs 10 to 1.....Ridiculous.

    As for the math, sundisk has a far better grasp on reality than you do.

    Any way you do the math, the new models have sold a million. Add to that, nearly all of January gone, another months worth of sales, and the numbers are mushrooming.
  • by pazuita,

    pazuita pazuita Jan 26, 2010 12:02 AM in response to spurv2
    Level 1 (20 points)
    Jan 26, 2010 12:02 AM in response to spurv2
    Spurv2, it is worth a try, You will be pleased with the results.

    I transfer files and operating systems that way quite often, I've never had an issue with Super Duper.

    It does speed up the process a lot if you copy some of your user files to another backup first. Cloning is a slower process than copying, but it does preserve all of your settings. Movie, music, and photo files do slow it down, so if those are removed first, it flies through all of the rest. You simply drag and drop them back where they go after the cloning is complete.

    Just start it up, grab a bite to eat, when you're done, you have your original system back on the new internal, identical to the old one.
  • by Brian_1338,

    Brian_1338 Brian_1338 Jan 26, 2010 12:13 AM in response to pazuita
    Level 1 (4 points)
    Jan 26, 2010 12:13 AM in response to pazuita
    pazuita wrote:
    Brian.......

    "They clearly have not sold anywhere near 1 million 27" iMacs."

    What is your source?

    Do you even have a source for anything? Funny pages do not count.


    Pretty simple math, my dear pazuita. Apple sold 1.234 million desktops last quarter, as you mentioned. Let's pretend for a moment that that includes only iMacs, and that they sold zero Mac Minis, Mac Pros, or Xserves.

    Now, we also know that Apple sold more 21.5" iMacs than 27" iMacs. (source: NPD @ http://www.computerworld.com/s/article/9142432/Apples_iMac_sales_jump_74_inU.S.)

    Therefore, they must have sold strictly less than 1.234M / 2 = 617k units of the 27" iMac. And almost certainly far less than that, once you factor in all the other desktops, et cetera. So my 150k estimate isn't exactly ridiculous.

    Ball's back in your court (since you didn't answer): What's your source on the 10 to 1 figure for iMac sales vs other desktop units?

    pazuita wrote:
    Your predictions of 150,000 of the new models sold is clearly ridiculous. why do you persist?


    Because I really can't stand bad math and misinformation.

    More importantly, I strongly object to your characterizations as this being a minor, dismissible issue. You're doing Apple customers a disservice by trying to eliminate attention on this issue.
  • by pazuita,

    pazuita pazuita Jan 26, 2010 12:29 AM in response to Brian_1338
    Level 1 (20 points)
    Jan 26, 2010 12:29 AM in response to Brian_1338
    I will agree, disinformation is offensive, the more you post, the more offensive it gets.

    Everyone here knows that the 21.5" outsold the 27" in the first half of the quarter. I have stated it myself on several occasions, in fact, the 21.5 was the best selling desktop in the US in October.

    Of course, the 27"ers were pretty rare then, weren't they, but we all know that.

    But that's all old news. Been posted on here quite a few times, but I guess if it's all you've got....

    I could post a link right now that would show that the new models have sold well over 2 million, and it wouldn't make any difference, you just won't face the reality.

    You continually support the idea that only 150,000 of the new models have been sold, yet you provide nothing to even remotely support that. All of the information available directly contradicts that statement.

    You are doing a disservice to all Apple users by trying to characterize these issues as a major problem, when you can provide no evidence, no real numbers of any kind that show that it affects more than 1, or 2 percent.

    That is misinformation.
  • by Brian_1338,

    Brian_1338 Brian_1338 Jan 26, 2010 12:49 AM in response to pazuita
    Level 1 (4 points)
    Jan 26, 2010 12:49 AM in response to pazuita
    pazuita...........

    pazuita wrote:
    I could post a link right now that would show that the new models have sold well over 2 million, and it wouldn't make any difference, you just won't face the reality.


    Go for it. Post away. You have my full support and encouragement.

    You continually support the idea that only 150,000 of the new models have been sold, yet you provide nothing to even remotely support that. All of the information available directly contradicts that statement.


    I've provided plenty of evidence to support that. My source wasn't just the first half of the quarter - check out the link yourself from my last post (don't worry, there's no malware there).

    One possible flaw in my reasoning is that sales of the 27" could have soared in December, to the point that it outsold the 21.5". But given that the 21.5" is a far less expensive machine, and December is typically a strong sales month all around, there's nothing to support that the 27" would have sold more than the 21.5" in December (let alone enough to overcompensate for the lopsided 21.5" sales in October and November).

    So it remains that until you can show that the 27" iMac had a blowout December & absolutely destroyed the 21.5" sales, then the 21.5" sold more overall in the quarter, and thus 27" sales are safely under half a million.

    Oh, and still waiting on a source for that claim that iMacs outsold other Mac desktops 10:1.
  • by AndrewGD,

    AndrewGD AndrewGD Jan 26, 2010 2:23 AM in response to Jan Sampermans
    Level 1 (0 points)
    Jan 26, 2010 2:23 AM in response to Jan Sampermans
    Have had the Imac 27 inch i5 for 2 1/2 weeks. Have noticed a slight filcker on two of the days. Interestingly when I saw it flicker a few times on Sunday a laptop was attached to the same power outlet.
    Yesterday didn't notice anything.

    Probably not worth logging any fault before it gets worse. It is certainly a lot better than the half yellow screen 21.5 I had.

    Quite disappointed in Apple's lack of acceptance on all these problems in general as they have just revealed they made $3.4 billion profit in the last quarter, up 50%. I feel that a lot of that money has been made off the backs of people who are having to return multiple machines and go through a lot of hassle.
    I still maintain there is much higher figure than 1% faulty machines out there. You only have to type in "27 imac flicker" on Google/YouTube and where-ever to realise the problems are not just located to 500 machines reported on this or other forums. Most people will not even bother to post and rant about it I'm sure.

    It certainly seemed to me that the sales guy in the Apple store was hiding something when I told him about my yellow screen 21.5 Imac which I returned. I'm sure memos have gone around about what the real situation is and also I am sure the 3 week lead time is not simply due to the popularity of the machine.
  • by andraki,

    andraki andraki Jan 26, 2010 5:38 AM in response to Bohm
    Level 1 (0 points)
    Jan 26, 2010 5:38 AM in response to Bohm
    "CANCEL"
    As you've got to wait a month anyway, you might as well wait a month and if something miraculous happens like they actually fix the thing then "jobs a good un", and you shouldn't be waiting more than a week for an i7.

    And there's nothing worse than spending £3000.00000.0000.00000.000.01p on something that don't work proper!!!!
  • by MacUser_P,

    MacUser_P MacUser_P Jan 26, 2010 6:32 AM in response to Jan Sampermans
    Level 1 (0 points)
    Jan 26, 2010 6:32 AM in response to Jan Sampermans
    I am waiting for 8 weeks befor buying a 27 iMac. One week ago I get a refurbished maschine (i think it is a good idea). But afer one week i have the same problem like all other. The refurbished (repaired) iMac was still not o.k.. Looks that Apple can´t fix the problem. I ask the technical support what I can do, the answer was --> send back, we have no solution today. I ask for a new driver in 3 weeks (read in a post), but the support has no information about it. So the iMac goes back.
  • by star-fish,

    star-fish star-fish Jan 26, 2010 7:50 AM in response to pazuita
    Level 2 (195 points)
    Jan 26, 2010 7:50 AM in response to pazuita
    pazuita wrote:
    You are doing a disservice to all Apple users by trying to characterize these issues as a major problem, when you can provide no evidence, no real numbers of any kind that show that it affects more than 1, or 2 percent.

    That is misinformation.


    A disservice to all Apple users?! Maybe Apple as a company, but certainly not its users.

    This is clearly an ongoing problem, and any ongoing problem should be fixed by the company responsible regardless of how many people are experiencing it.
  • by walker106,

    walker106 walker106 Jan 26, 2010 8:42 AM in response to Gable31
    Level 1 (0 points)
    Jan 26, 2010 8:42 AM in response to Gable31
    Well add me to the list. I have a 27" core2 build week 2 of 2010. It was an apple refurb unit. Had noisy HD out of the box, i lived with this. At one week old has started flickering, called tech support yesterday and was given the option of refund (withing 14 day window), replacement(told it could very well have same KNOWN issue) or wait 3 weeks, at which time i can no longer return, for them to come up with a solution (that sounds logical....<sarcasm>) I was going to go for replacement however just last night I burned a cd only to find upon ejection the casing of the imac had scratched the crap out of the disk. I kept playing around with it and found unless i put force on the disk pulling it towards me it would scratch the disk everytime. So thats it im not sitting and hoping i get everything fixed right. Went through similar issues with the first 12" powerbook, which never really got resolved after 5 trips to repair. Its getting returned and ill wait till apple figures out what they are doing with this thing. Such a shame.
  • by Kurt Hudson,

    Kurt Hudson Kurt Hudson Jan 26, 2010 9:54 AM in response to Jan Sampermans
    Level 1 (0 points)
    Jan 26, 2010 9:54 AM in response to Jan Sampermans
    ACtually the one and only true solution to this problem is to return the computer in the first place... theres 240+ pages of nonsense on this forum when really the only solution is to eliminate problem completely by sending it back and getting your hard earned money back... there shouldnt have to be a SOLUTION TO FIXING A PROBLEM WITH A $2000+ BRAND NEW COMPUTER COME ON PEOPLE youre all being suckers.. im on my 2nd one now and im about to return it for a full refund until mac gets their heads out of their ANUSES
  • by Warren Beasley,

    Warren Beasley Warren Beasley Jan 26, 2010 10:29 AM in response to Jan Sampermans
    Level 1 (0 points)
    Jan 26, 2010 10:29 AM in response to Jan Sampermans
    Very interesting indeed!

    I don't know if anyone else noticed, but within the last ten minutes or so, one of the moderators of this forum apparently deleted Namikun's original post, as well as all responses to it, which included a response from me...at least I no longer see them on my end. Can anyone else still see them?

    Right before this occurred, I refreshed the page and got an error message stating that I did not have permissions to view the thread. Perhaps it was during that time that the moderator was deleting the unwanted posts.

    If they truly did delete the posts, and it was not simply a technical glitch, one has to wonder why the posts were deleted. The fellow was simply asking how he should proceed, in light of the fact that an Apple Care employee told him that they would not replace his unit, being as the two weeks had already passed.

    What kind of heavy handedness is going on here?
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