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Summary (2819 total)

Processor (issues only)
3.06C2D: 652
3.33C2D: 59
2.66i5: 524
2.8i7: 964

Screen Size (issues only)
21.5": 209
27": 1990

Graphics Card (issues only)
9400M: 99
4670: 568
4850: 1532

Build Quality Over Time
View graphs


Batch (Week Built) (issues only)
09-39: 10
09-40: 8
09-41: 8
09-42: 30
09-43: 60
09-44: 42
09-45: 112
09-46: 211
09-47: 239
09-48: 198
09-49: 141
09-50: 284
09-51: 102
09-52: 128
09-53: 72
10-01: 75
10-02: 32
10-03: 27
10-04: 47
10-05: 38
10-06: 28
10-07: 34
10-08: 41
10-09: 31
10-10: 19
10-11: 21
10-12: 15
10-13: 15
10-14: 23
10-15: 10
10-16: 15
10-17: 10
10-18: 8
10-19: 6
10-20: 2
10-21: 5
10-22: 3
10-23: 3
10-24: 6
10-25: 5
10-27: 4
10-28: 4
10-29: 2
10-31: 2
10-32: 1
10-33: 2
10-35: 2
10-37: 1
10-38: 1
10-39: 1
10-40: 3
10-41: 1
10-42: 2
10-44: 2
10-45: 2
10-47: 2
10-48: 2
10-52: 1
Condition iMac Specs Source Comments
Flickering display 27" 3.06 Core2Duo 1TB Stephen Stark There was a similar issue with my MacBook Pro, but there were two settings for the display—when you switched to the low power mode (I think) it cured it. I don't think there are similar setting changes that can be made to the iMac.
Flickering display 27" 3.06 Core2Duo 1TB DavidsonTsai
Flickering display 27" 3.06 Core2Duo 1TB Infotech247 It seems to happen to me when copying via Firewire. My screen doesn't black out, I just get a couple of 1 pixel'ish lines (multi coloured) appear across the middle of the screen for a split second. I've been using the machine for less than 5 minutes b
Flickering display 27" 3.06 Core2Duo 1TB GSears Booted up for the first time, I had already begun experiencing the flicker problems. To say the least, it wasn't boding well for my new machine. As everyone else here has executed, I rebooted and the problem was fixed. Until it started flickering again.
Flickering display 27" 3.06 Core2Duo 1TB jmavedillo In Apple Support I've been told to unplug the computer, press power button for 15 seconds and then plug it again. Of course, it's better to upgrade to 10.6.2 before doing this.
Flickering display 27" 3.06 Core2Duo 1TB shahtooh The reason why I am asking is simple : I had the flickering/etc. issue even after the update. If "your" drivers are just the same as Apple's, then I know it will come back anytime.
Flickering display 27" 3.06 Core2Duo 1TB Umpi After update it to 10.6.2, it worked better but finaly, today again the screen splited leaving the dock at the top.
Flickering display 27" 2.8 Quad i7 1TB Bill P. After running a few hours I also began getting screen flickering and intermittent black screen. This would be followed by horizontal lines about 1" wide towards the lower half of the screen. I rebooted and all was fine until this morning when it returned
Flickering display 27" 2.8 Quad i7 1TB GLM_BUF Used it all evening on Friday, all day Saturday and it was fine. This morning the flickering started after a half hour of use, then the screen now goes black every 30 seconds or so (4 times while writing this). Same behaviour , now bar has gone to the top... Read More
Flickering display 27" 2.8 Quad i7 1TB guitarguy09 However, the tech said that it may in fact be the video card and that apple engineers are "aware of the issue and are working on it". They reportedly are "leaning toward it being a hardware issue" right now but are still trying to identify the exact p
Flickering display 27" 2.8 Quad i7 1TB Invisidrew I've had a new iMac 27" with Dual Core (1TB drive) for about 18 hours now. And I've been noticing the flickering/banding almost from about one hour after startup. It's not horrible, but it's persistent enough to make me very concerned. The occassion
Flickering display 27" 3.06 Core2Duo 1TB rustyosaurus i am on day 3 of new 27 in imac base config and am also experiencing the same issues. i wonder if a firmware update won't fix this. i will probably just go make them exchange it instead.
Flickering display 27" 3.06 Core2Duo 1TB BruceHA Having the same issue now and then on my imac 27" (Week 42)...
Flickering display 27" 2.8 Quad i7 1TB canyonblue Worked fine for about 2 hours now I get the flicker (bands, at various places for under one second) and screen blackening (total blackout for about 1 second) about once every 2 or 3 minutes. A simple reboot fixed nothing and I have not yet tried the pram ... Read More
Flickering display 27" 3.06 Core2Duo 1TB AGPcardforPM After several hours of continuous use with the brightness set between 6-8 bars (halfway), Intermittent screen flicker both horizontal and vertical occured with the occasional black screen for a brief second. The problem persisted and became more frequent,... Read More
Flickering display 27" 3.06 Core2Duo 1TB freakmax ATI Radeon HD 4670: ROM Revision: 113-B8030F-253 EFI Driver Version: 01.00.367
Flickering display 27" 3.06 Core2Duo 1TB maquelle ATI Radeon 4670 ROM Revision: 113-B8030F-253 EFI Driver Version: 01.00.367
Flickering display 27" 3.06 Core2Duo 1TB tennisbold ATI Radeon HD 4670 ROM Revision: 113-B8030F-253 EFI Driver Version: 01.00.367
Flickering display 27" 2.8 Quad i7 1TB MilehiJT
Flickering display 27" 2.8 Quad i7 1TB Schwa72 The first thing that happened was that I got a black horizontal bar flash across the screen, about 10 seconds later the screen went completely black for about a second, and finally, about a minute later, my menu bar jumped to the middle of the screen.
Flickering display 27" 2.8 Quad i7 1TB Schwantz You can add one more 27" I7 to the list with the flickering and short 1 SECOND black screen. The part that really ***** is, i just got it this morning... first thing i did was update it...
Flickering display 27" 3.06 Core2Duo 1TB bj10au Not only does the screen flicker intermittently and sometimes go black for a second, but on several occasions the whole screen has shifted down so the menu bar as about 1/4 of the way down from the top of the screen with the dock above it.
Flickering display 27" 2.8 Quad i7 1TB eXodusSquared Everything was great until about 10 minutes in, the screen started to shift up about 1/2 a centimeter and made everything blurry as if it was ghosted/shrunk/distorted. It would do this on and off a few times then it stuck like that until I turned it off.
Flickering display 27" 2.8 Quad i7 1TB Simon (UK) according to Apple, at this moment, it's not a firmware issue and they're treating it as a potential hardware problem. The directive for US and Europe is to replace any iMac that exhibits these symptoms.
Flickering display 27" 2.66 Quad i5 1TB Breaksandbeats I got the new iMac 27" (dual core) about two weeks ago and have experienced the flickering screen to a lesser extent than many on here but still enough to worry.
Flickering display 27" 2.66 Quad i5 1TB CarpeNoctum I got only one flickering, rebooted and never saw it again until today (12 days after purchase). I called the shop in Brussels where I bought the iMac from and they told me they know the issue, asked me to take the iMac there, they will send it to repair... Read More
Flickering display 27" 3.06 Core2Duo 1TB gingeralbert Ive been having the horizontal static type bar flickering across the screen and the full screen dropping down problems. The screen drop seems to be happening in the mornings at startup when its cold.
Flickering display 27" 2.66 Quad i5 1TB Vagus I had this exact problem- flicker, tearing, going black, as seen in the videos here the morning after I set my iMac up after waking it from sleep.. It went on all morning until I did a PRAM reset
Flickering display 27" 3.06 Core2Duo 1TB kookykabuki
Flickering display 27" 3.06 Core2Duo 1TB benlbr
Flickering display 27" 3.06 Core2Duo 1TB jayuws
Flickering display 27" 2.8 Quad i7 1TB jakematics 2 days in am seeing ever so slight flickering - nearly imperceptible. So far it's a minor annoyance a few times a day.
Flickering display 27" 3.06 Core2Duo 1TB PericlesNYC
Flickering display 27" 3.06 Core2Duo 1TB Oyvind Moe Not a great first Mac experience, in other words, but I'm hopeful that it will eventually be resolved somehow, because I am absolutely in love with the thing.
Flickering display 27" 2.8 Quad i7 1TB Greywolf8577 I received my new 27" last night and it was doing the same thing. The horizontal bar, and the screen going black for a second.
Flickering display 27" 3.06 Core2Duo 1TB scsDigital my imac just staring flickering this morning, I bought it the first day it came out so its been almost a month. Also have had the black screen and now the flickering is driving me crazy. After the 14 days does this become a warranty issue?
Flickering display 27" 2.66 Quad i5 1TB Anijake Well this just started to happen to my i5. 3 times today, flicker and the screen tear. I took pictures and plan to go to the store tonight for a replacement. Mine is less then a week old.
Flickering display 27" 3.06 Core2Duo 1TB PixelJimi I had not had any issues until this morning when I turned my mac on, my office gets rather cold sometimes and last night it was very cold outside, so when I turned my iMac on it was 16 degrees Celcius!! I had about 5 instances of flickering
Flickering display 27" 2.8 Quad i7 1TB gerti I only see this when I wake the system from sleep. If I restart it, I can work on it all day without a hint of a flicker.
Flickering display 27" 2.8 Quad i7 1TB rushpip After 1 hour it started the flickering. Tried the restart- nothing. This morning, after 1 hour or so it started again.
Flickering display 27" 2.8 Quad i7 1TB Jay92323
Flickering display 27" 3.06 Core2Duo 1TB olucho I was experiencing the same problem yesterday, once every few minutes it would tear, a few times during the day it went black for a second.
Flickering display 27" 3.06 Core2Duo 1TB Martin Ravn
Flickering display 27" 3.06 Core2Duo 1TB Peter Stolle After 3rd day, it began the flickering. I did no migrations. I did however download some High Def video from my camcorder that day. The flickering became noticeable AFTER the video transfer.
Flickering display 27" 3.06 Core2Duo 1TB katie920 got mine at the end of october, the screen flickering started within an hour of opening the box, before i had put ANYTHING on it.
Flickering display 27" 3.06 Core2Duo 1TB IMACPATRICIO I just buy imac 27 as well and and having alot flicking every 20 minutes
Flickering display 27" 3.33 Core2Duo 1TB Paul.31
Flickering display 27" 3.06 Core2Duo 1TB chris_t I got my new iMac just 11 days ago and I experience exactly the same issues (flickering, blackouts, horizontal white noise stripes across the screen, etc.).
Flickering display 27" 2.66 Quad i5 1TB thomashome
Flickering display 27" 3.06 Core2Duo 1TB Bill Ainsworth Started happening on about day 5 of ownership.