Custom Search

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" 2.8 Quad i7 1TB Bill P. My i7 replacement (second i7) is now 11 days old. No problems until today. No flickering thus far, but I did get the vertical lines shifting/tearing the menu bar down about 5 or 6 inches and putting the dock at the top. Had to reboot to fix it. Looks like... Read More
Flickering display 21.5" 3.06 Core2Duo 500GB Shaun Priest Basically before I put my iMac to sleep at night, I put the brightness down to 1 notch, so when I wake up in the morning and check my email the brightness doesn't damage my eyes! I done this the first night I got the iMac and the next morning, when I woke... Read More
Flickering display 21.5" 3.06 Core2Duo 500GB coxorange I also bought two new iMacs 21.5" with ATI Radeon HD 4670 (in the UK). (I post this here because the other thread is for the 27".) One had that flickering problem - the other one was OK. The defective one also made a humming noise (top, right side) and a... Read More
Flickering display 27" 2.66 Quad i5 1TB Random screen flickers - horizontally. As yet no satisfaction from Apple.
Flickering display 27" 3.06 Core2Duo 1TB
Flickering display 27" 2.66 Quad i5 1TB
Flickering display 27" 3.33 Core2Duo 2TB Took 4 calls and over 3 hours on the phone to get Apple to accept return/exchange
Flickering display 27" 2.8 Quad i7 1TB
Flickering display 27" 2.66 Quad i5 1TB exchanged for new machine (with same issue, reporting separately)
Flickering display 27" 2.66 Quad i5 1TB replacement machine with same problems as original
Flickering display 27" 2.66 Quad i5 1TB nikos@mac.com Problems with flickering and screen going black started on day 2. Logged with Apple support. I can make the problem go away by putting iMac to sleep and waking it up immediately, therefore not related to heat. Airport always off (connecting via... Read More
Flickering display 27" 3.06 Core2Duo 1TB Very disappointed :(
Flickering display 27" 2.8 Quad i7 1TB camereo
Flickering display 27" 2.66 Quad i5 1TB Flicker noticed 12 days after purchase. Happened 3 times.
Flickering display 27" 2.66 Quad i5 1TB angelswings Had my i5 (wk 47) for 11 days and just started to get some flickering today. Flickers about once a minute and screen blackout about twice an hour. Just rebooted and so far ok. Strangely, I'm feeling sort of relieved. Not knowing whether I had a good one... Read More
Flickering display 27" 2.8 Quad i7 1TB Flickering screen with blackouts like others. Occurred after several days. Ceases after restart. Then returns a while later.
Flickering display 27" 2.66 Quad i5 1TB jfaughnan I bought my 27" i5 today and so far it's had two episodes of severe flickering and one episode of stuttering. It's been displaying a slide show as a convenient way to test. When I move my mouse it's fine thereafter.
Flickering display 27" 2.66 Quad i5 1TB Jemamo I've just replaced my 2 week old i5 iMac due to problems with flickering and blacking out (as described in this post: http://discussions.apple.com/thread.jspa?threadID=2212682&tstart=0), which was also a 46week batch.
Flickering display 27" 2.66 Quad i5 1TB Nic P I have had my iMac 27" i5 for a week. I checked the serial number and found that it is a week 46 model. The flickering and blacking out problem started on day two of using the machine. I called Apple and set up a case id. They told me to go to an Apple... Read More
Flickering display 27" 2.8 Quad i7 2TB
Flickering display 27" 3.06 Core2Duo 1TB
Flickering display 27" 3.06 Core2Duo 1TB
Flickering display 27" 2.8 Quad i7 1TB madebysteve seems ok after restart. Flickering is fairly random, some days no flickering
Flickering display 27" 2.66 Quad i5 1TB
Flickering display 27" 3.06 Core2Duo 1TB Jr Beck We bought our iMac 27-inch around 6 weeks ago and the flickering & blackouts began around 2 weeks after purchase. Have informed Apple support - they had not heard of this issue at the time so had me do reboots and run the hardware tests etc. None of these... Read More
Flickering display 27" 3.33 Core2Duo 1TB ArMyZ I'm experiencing random flickering issues too. Totally random. I installed OS from scratch, no restore or import tools at all. Obviously I'm just out of the 14 days, of course (but I bought apple care plan too). When flickering issue comes, rebooting I... Read More
Flickering display 27" 2.8 Quad i7 1TB betronic in OS-X flickering and more problems in windows 7 - Windows 7 32bit + BootCamp driver - Windows 7 64bit + BootCamp driver - Windows 7 32bit + new ATI catalyst driver - Windows 7 64bit + new ATI catalyst driver always the same problem - heavy graphic... Read More
Flickering display 27" 2.66 Quad i5 1TB Bullchan I'd like to add that my week 46 i5 started flickering today. (had it for about 2.5 weeks now)
Flickering display 27" 2.8 Quad i7 1TB Jacques LAPORTE It happened 3 times up to now (28 days) blackout following 2 or 3 flickers
Flickering display 27" 2.8 Quad i7 2TB
Flickering display 27" 3.06 Core2Duo 1TB purchased from best buy
Flickering display 27" 2.66 Quad i5 1TB firite flickering on windows xp running on boot camp
Flickering display 27" 3.06 Core2Duo 1TB
Flickering display 27" 3.06 Core2Duo 1TB
Flickering display 27" 2.66 Quad i5 1TB Flickering seen during photo slide shows, stops when move mouse.
Flickering display 27" 2.66 Quad i5 1TB scott3985
Flickering display 27" 2.8 Quad i7 1TB Sometimes flickering appearing: so this means that some days iMac works perfectly while others show the flickering. This is casual and not related to temperature ( show problems since started ) or to airport ( i never use it, iMac is linked via LAN )
Flickering display 27" 2.8 Quad i7 1TB Flickering display and bottom 2 inch portion of screen appearing on top. Both resolved short term by putting computer to sleep. Apple replaced video card on 12/10. Flicker seems to be resolved, but bottom on top issue reoccurred on 12/11.
Flickering display 27" 3.06 Core2Duo 1TB Here is a video on youtube of the condition: http://www.youtube.com/watch?v=LZOwA4Fz5Ow Video shifts - so the display is offset
Flickering display 27" 3.06 Core2Duo 1TB
Flickering display 27" 2.8 Quad i7 1TB chris@netfoo.com
Flickering display 27" 2.8 Quad i7 1TB
Flickering display 27" 2.66 Quad i5 1TB Random appearance of 1-2 inch nearly horizontal bars across the screen
Flickering display 27" 2.8 Quad i7 1TB alwalker@mac.com Worked OK for about 20 minutes, then started flickering every 6.6 seconds. Contacted AppleCare, awaiting replacememnt.
Flickering display 27" 3.06 Core2Duo 1TB Screen flickers and occasionally goes black for a second. Apple tech support took me through a test process; slightly better.
Flickering display 27" 2.8 Quad i7 1TB zapping PRAM done, SMC reset done = NO SIGNIFICANT CHANGE. Hi frequency backlight except in max luminosity. Noisy HDD. Random screen shutdown.
Flickering display 27" 2.8 Quad i7 2TB Fixed Issue by Download of fan control softw and upped GPU fan rate 500 rpm iMac 27" Corei7 ATI4850 periodic momentary screen blackouts some band flicker
Flickering display 27" 3.06 Core2Duo 1TB rkbrown81@gmail.com
Flickering display 27" 2.8 Quad i7 1TB It has only had the flashing issue for a short period of time. I changed the background from the default to a solid color and it stopped after that. It's too early to know if it's completely gone.
Flickering display 27" 2.66 Quad i5 1TB