New 24" Penryn iMac owners....screen bleed fixed???

[Darkroom]

Either you guys are indeed looking at the world through gradiented eyes or the vast majority of iMac owners are blind to the "problem". I had a minor gradient on 2 panels in my iMac before the one I'm currently using that has none I can detect.

oh come on, even you yourself had to got thru 2 iMacs to finally receive on that, as you say, has none you can detect... simply based on your own experience you should immediately understand it's a large problem, and not just a select few "looking at the world through gradiented eyes"

If the iMac is not up to your exacting standards of quality then get an ACD and a Mac Pro or go build a Windows machine. There is no obligation to own an iMac that I know of.

the iMac is very much up to standards IF the most fundamental part of the computer (the screen) was error-free... just because you're a lucky customer who has (finally) received an iMac with even backlighting and no gradient, doesn't mean the rest of us shouldn't either... you're insinuating that we're being picky, while you yourself had to return 2 ??? ... you don't make sense.

 

[SaSaSushi]

It's partly because the previous iMacs had professional quality S-IPS panels:

- The 20" white iMac used exactly the same panel as the 20" Cinema Display.

- The 24" white iMac used exactly the same panel as the $1100 NEC LCD2490WUXi

And partly because Apple's CEO repeatedly and unreservedly claimed that the
ALU iMacs were: "even better", "upgraded", and "MORE PROFESSIONAL"
than the white iMacs -- i.e., the ones with professional-grade S-IPS displays:

All Mr. Jobs' hard sell adjectives aside the fact is the mid-2007 24" iMacs on use the next generation H-IPS iteration of the same LG-Philips panel in the prior white models.

Liar, liar, pants on fire!


Maybe "everyone was expecting" something other than outright lies from SJ.

LK

I wonder if you are at all aware, or even care that not everyone shares your opinions on this entirely subjective issue. Comparing a minimal to gradient-free (as my current 24" iMac LCD panel is) 24" aluminum iMac with the display of my prior 20" Core Duo it is no contest. The 24" is night and day sharper with more vivid color and a far better viewing angle.

 

[SaSaSushi]

oh come on, even you yourself had to got thru 2 iMacs to finally receive on that, as you say, has none you can detect... simply based on your own experience you should immediately understand it's a large problem, and not just a select few "looking at the world through gradiented eyes"

I sympathize with you if in fact your display has severe gradient issues. I have seen some, like Leon Kowalski's, with entirely unacceptable gradients. In this case I would most definitely demand a replacement.

My replacement LCDs were not due to gradients although they both had them. The first replacement was for a smudge or scratch of some type on the LCD panel itself. The second (replacement) panel had backlight flickering issues that gradually worsened over time.

My "gradiented eyes" comment is not meant as any insult. I am simply suggesting that some, particularly professionals in the field such as yourself, may be more sensitive to such problems. I think the vast majority of iMac owners never even detect a gradient problem on their machines even if they exist. as for what is an "acceptable gradient" that is ultimately up to the consumer to decide. What you may deem a ridiculously horrible gradient might be entirely undetectable to others.

I'm not making excuses for Apple nor am I a "fanboy". I wasn't really happy with having to send my Mac back twice to Apple.

the iMac is very much up to standards if the most fundamental part of the computer (the screen) was error-free... just because you're a lucky customer who has (finally) received an iMac with even backlighting and no gradient, doesn't mean the rest of us shouldn't either...

I hope you get a great display like this one I finally got. I wish you the best of luck.

 

[Darkroom]

I hope you get a great display like this one I finally got. I wish you the best of luck.

thanks... it's really a pain to have to lug this back up to Laval, so i'm really hoping the 2nd time is a charm... i've called Apple and the Apple Store a few times about over the past few days about this issue, to find out information, etc... all the people i spoke with seemed very surprised that i had a bad screen, so i'm really hoping it's not an epidemic like i think it is... and i guess there's real hope, since you are a graphic designer (undoubtedly trained in color) and could spot even a subtle gradient on your computer, but as you say, it's perfect... *fingers crossed*

 

[Leon Kowalski]

... the fact is the mid-2007 24" iMacs on use the next generation H-IPS
iteration of the same LG-Philips panel in the prior white models.

What "fact" do you have to support that conjecture?

The white 24" iMac used an LM240WU2-SLA1 panel, the ALU 24" uses
an LM240WU2-SLB1 panel.

Do you have any hard evidence that one is an "S-IPS" panel while the other
is "H-IPS?" It seems extremely unlikely that LG.Philips would switch to an
entirely new panel-matrix technology while retaining the same base part number.

Do you have any evidence that "SLB1" indicates a 'next generation' iteration --
rather than matte vs. glossy panel face, or Grade-B vs. Grade-A quality-sort?

Comparing a minimal to gradient-free ... 24" aluminum iMac with the
display of my prior 20" Core Duo it is no contest.

Lame, HRC-quality evasive maneuver. Now try comparing the $1499
white 20" to Steve's "upgraded", "even better", "more professional",
$1499 20" ALU iPOS.

"Get your facts first, and then you may distort them as much as you please."
- Mark Twain

 

[Inksworth]

I know this is just anecdotal, but I just got my new 2.8 with the 8800GS today. I took a good, hard look at the screen to see if there were any issues or not.

To some extent, I believe the bottom corners are getting slightly less light than the rest of the screen, but there's no light leaking through the blacks, nor are there any issues with the screen's color temperature (I assume that's the problem with the color bleeding, either way that's not visible as far as I can tell.)

Based on my purely anecdotal experiences so far, I'm gonna say that the problem isn't omnipresent. But still prevalent enough to make it's rounds here... my god, some of the photos people posted. I hope I'm not just lucky or something.

 

[SaSaSushi]

What "fact" do you have to support that conjecture?

The white 24" iMac used an LM240WU2-SLA1 panel, the ALU 24" uses
an LM240WU2-SLB1 panel.

Do you have any hard evidence that one is an "S-IPS" panel while the other
is "H-IPS?" It seems extremely unlikely that LG.Philips would switch to an
entirely new panel-matrix technology while retaining the same base part number.

Do you have any evidence that "SLB1" indicates a 'next generation' iteration --
rather than matte vs. glossy panel face, or Grade-B vs. Grade-A quality-sort?

"Get your facts first, and then you may distort them as much as you please."
- Mark Twain

Actually, I've already addressed this issue with you in this thread to which you never responded.

Pay particularly close attention the thread over at [Hard]forum.

I think you're the one who needs to check his facts by the way. The NEC 2490WUXi has always used the LG-Philips LM240WU2-SLB1 panel in the mid-2007 aluminum iMacs not the LM240WU2-SLA1 panel in the white 24" iMacs.

Look, here's a comment from a guy that has BOTH the 24" aluminum iMac and the NEC 2490WUXi sitting side by side on his desk! It's hard to argue with that.

Do read the whole thread.

 

[Leon Kowalski]

Pay particularly close attention the thread over at [Hard]forum.

The NEC 2490WUXi has always used the LG-Philips LM240WU2-SLB1
panel in the mid-2007 aluminum iMacs not the LM240WU2-SLA1
panel in the white 24" iMacs.

You call that evidence? One net.rumor -- without any mention
of the "SLA1" or "SLB1" part number suffixes?

BTW, if NEC's 2490WUXi uses the same panel as the 24" ALU,
how do you explain the fact that the NEC has a matte screen?

Do read the whole thread.

Exactly zero mention of part-number suffixes, and zero evidence to
support you on the differences between white and ALU iMac displays.


...evidence?? ...more like: "Proof by strenuous assertion."

LK

 

[Darkroom]

BTW, if NEC's 2490WUXi uses the same panel as the 24" ALU,
how do you explain the fact that the NEC has a matte screen?

i was under the impression that the iMac's screen is matte, and that it's the glass (which feels more like hard plastic to me) that is over the screen that makes it "glossy"... can anyone who has removed the glass confirm if the underlying screen is matte or glossy?

 

[Leon Kowalski]

i was under the impression that the screen is matte,
and that it's the glass ... is what makes it "glossy"...

I have no first-hand information, but several posts here and on other
forums have reported that the face of the LCD panel is indeed glossy.

LK

 

[JayLenochiniMac]

can anyone who has removed the glass confirm if the underlying screen is matte or glossy?

I've read conflicting reports whether the underlying screen is matte or glossy. Could be that 20" uses glossy and 24" uses matte, or vice versa.

 

[JayLenochiniMac]

several posts here and on other
forums have reported that the face of the LCD panel is indeed glossy.

LK

Do enough googling and you'll come across posts claiming the LCD panel is matte.

 

[Leon Kowalski]

Do enough googling and you'll come across posts claiming the LCD panel is matte.

Do enough googling and you'll come across posts claiming <whatever you wish>.

LK

 

[Darkroom]

I have no first-hand information, but several posts here and on other
forums have reported that the face of the LCD panel is indeed glossy.

LK

I've read conflicting reports whether the underlying screen is matte or glossy. Could be that 20" uses glossy and 24" uses matte, or vice versa.

Do enough googling and you'll come across posts claiming the LCD panel is matte.

Do enough googling and you'll come across posts claiming <whatever you wish>.

LK

it sure seems matte from this video: http://www.youtube.com/watch?v=cy0o2WdrN3M&feature=related

but youtube video quality isn't exactly a good source...

 

[shanmui1]

it sure seems matte from this video: http://www.youtube.com/watch?v=cy0o2WdrN3M&feature=related

but youtube video quality isn't exactly a good source...

download the mp4, see if you can get a better quality look.

 

[JayLenochiniMac]

http://www.kodawarisan.com/imac_2007_mid/imac_2007_mid_01.html

Looks 20" and matte to me. So perhaps 20" uses matte and 24" uses glossy, which might explain the conflicting reports?

 

[dantay]

My screen looks glossy through the glass.....i get a secondary reflection and can see a slight smudge on the glossy panel under the glass....in my case the screen itself has a gloss finish.

 

[mtntrance]

Another bad 24 inch screen

I received my new 3.04 yesterday and as I feared it has significant back bleed, a yellowish gradient in the center and one stuck pixel. During the day the back bleed was tolerable but at night it's too much. Most troublesome is the yellowish gradient in the center because it is a constant distraction. I am going to let apple send me a new one if they want or seek refund and get a pro, powermac or maybe a mini after June 9. My first choice would be a iMac 24 with a decent (not perfect) screen.

 

[surferfromuk]

Just got my brand new alu 24" iMac 2.8ghz Nvidia spec - Screen is amazing.

No problems here.

 

[dantay]

Just got my brand new alu 24" iMac 2.8ghz Nvidia spec - Screen is amazing.

No problems here.

Well thats good news....if you have no left to right colour shift/gradient and no/little backlight bleed would you be good enough to post the first 5/6 digits of your serial number ie. W8812 or VM8816 etc. Handy to know if there are good batches out there. Cheers

 

[Darkroom]

Well thats good news....if you have no left to right colour shift/gradient and no/little backlight bleed would you be good enough to post the first 5/6 digits of your serial number ie. W8812 or VM8816 etc. Handy to know if there are good batches out there. Cheers

mine starts with WW8810, does that tell you anything? mine is bad by the way... it's not exactly horrible, but uneven backlighting, yellow band in the center, and "acceptable" screen bleeding... even though i believe there should be absolutely none whatsoever on an apple computer.

i'd be really interested to know what are the first 5 digits of SaSaSushi's iMac, since he's a graphic designer and could see issues better than an average user, and claims to have no issues with his screen.

what about the Part Number? or the Model Number? would they be useful with trying to land a good iMac?

 

[dantay]

mine starts with WW8810, does that tell you anything? mine is bad by the way... it's not exactly horrible, but uneven backlighting, yellow band in the center, and "acceptable" screen bleeding... even though i believe there should be absolutely none whatsoever on an apple computer.

W = shanghai china and 8 is 2008 the week is 10.....mines the same but a week 12. Mine has bleed and gradient as EVERYONE knows......i'm soooo bored of posting tbh.....wish apple would just sort these poxy screens

 

[Darkroom]

W = shanghai china and 8 is 2008 the week is 10.....mines the same but a week 12. Mine has bleed and gradient as EVERYONE knows......i'm soooo bored of posting tbh.....wish apple would just sort these poxy screens

did you write down the numbers of the previous 15 you had? were they about the same?

i've just noticed today that my iMac has actually developed a subtle red hue along the bottom of the screen, and the bottom of the screen is now brighter than the top... so ghetto...

 

[dantay]

did you write down the numbers of the previous 15 you had? were they about the same?

obviously had loads....week 9/10/12/14/16 from Czech republic and Shanghai, all a bit crap (technical term)

 

[surferfromuk]

Well thats good news....if you have no left to right colour shift/gradient and no/little backlight bleed would you be good enough to post the first 5/6 digits of your serial number ie. W8812 or VM8816 etc. Handy to know if there are good batches out there. Cheers

VM8181

I ran front row and I can't see any bleed either...

Only observation I have is that I've had to turn the brightness down about 5 notches because otherwise it's like sitting in front of a floodlight!!

(btw : did my bleed tests on full brightness )

And for what it's worth the graphics card is extremely quick - but then I am coming from an iMac with a XT1600 in it.

All in all I'm very happy...