you have these shadows, not good apple, not good
try to move white page across the screen you will notice these dark spots here and there
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Attention new MBP owners: Please perform this Yellow tint test
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you have these shadows, not good apple, not good
try to move white page across the screen you will notice these dark spots here and thereyou have these shadows, not good apple, not good
Yea, i know it !!! The good thing is there are only two shadows on the bottom left. And it is hard to notice, while it's annoying for me. I dont know they will allow me to do the repair again or not.. Since this is my 3rd repair already, and this is so far the best one ( with less issues ) . It's totally gambling .
Does anyone with the similarly situation ? (not very serious backlight shadows on the bottom)
Come to expect that no replacement will be perfect. All will have some backlight bleed, as well as uneven backlighting, or "shadows". Sure, some panels my have less defects, but after having been through 5 myself, and taken a look at about half a dozen in 3 of my local Apple stores, all 15" MBP displays I've seen have had some issues. In my estimation, if you're planning on settling for the one you have, or the next one after that, all you can do is spend some time calibrating the display, and running wallpaper that hides the flaws. I'm surprised Apple isn't offering plastic surgery for the MBP, they'd make a killing.
Yellow LED?
I have never heard of a yellow LED. I think there are two technologies: white LED and RGB LED. White is cheaper. Where did you hear that LG ans Samsung used yellow?
Also note that the AUO page says their contrast ratio is only 400:1 whereas the LG ans Sam are 500:1.
I have never heard of a yellow LED. I think there are two technologies: white LED and RGB LED. White is cheaper. Where did you hear that LG ans Samsung used yellow?
Also note that the AUO page says their contrast ratio is only 400:1 whereas the LG ans Sam are 500:1.
MBP screen measurements
There are two yellow issues we've been discussing.
(1) Yellow toward the bottom only.
(2) Yellowish everywhere.
The first may be due to the backlighting or the screen surface treatment (i.e., the anti-glare layer in the case of glossy, or the diffuser layer in the case of matte ). If you can cause the yellow at the bottom to come and go by rocking the screen up and down to change your viewing angle, then it is not a backlight issue. After seeing 3 of these, my guess now is that I am seeing the effects of the anti-glare screen coating which is angle dependent. In all the cases where I saw yellow at the bottom I could make it appear white by changing my viewing angle to look stratght on at the bottom band in the test pattern. At this point, the top band would take a pinkish tint due to its angle.
The second (yellow everywhere) should be able to be dealt with by calibration using a colorimeter probe I would imagine. There is nothing subjective here. When you are done calibrating you can measure the screen tint exactly for a white (or gray) pattern. If there is even the slightest trace of tint toward yellow this would be reflected in the measurements. Mine have all calibrated nearly perfectly to white = 6500K with a deltaE of less than 3. This small error in imperceptable to humans.
Splochyness or uneven patches can only be screen defects. Using my probe I measure about 310 c/m2 at the center of my LG screen at full brightness and this varies about 12% over the screen. This is not so bad, but the measurements of brightness on a black pattern are worse. About 0.47 in the center and about 0.70 near the bleeding at the top and bottom. Nearly a 50% fluctuation.
There are two yellow issues we've been discussing.
(1) Yellow toward the bottom only.
(2) Yellowish everywhere.
The first may be due to the backlighting or the screen surface treatment (i.e., the anti-glare layer in the case of glossy, or the diffuser layer in the case of matte ). If you can cause the yellow at the bottom to come and go by rocking the screen up and down to change your viewing angle, then it is not a backlight issue. After seeing 3 of these, my guess now is that I am seeing the effects of the anti-glare screen coating which is angle dependent. In all the cases where I saw yellow at the bottom I could make it appear white by changing my viewing angle to look stratght on at the bottom band in the test pattern. At this point, the top band would take a pinkish tint due to its angle.
The second (yellow everywhere) should be able to be dealt with by calibration using a colorimeter probe I would imagine. There is nothing subjective here. When you are done calibrating you can measure the screen tint exactly for a white (or gray) pattern. If there is even the slightest trace of tint toward yellow this would be reflected in the measurements. Mine have all calibrated nearly perfectly to white = 6500K with a deltaE of less than 3. This small error in imperceptable to humans.
Splochyness or uneven patches can only be screen defects. Using my probe I measure about 310 c/m2 at the center of my LG screen at full brightness and this varies about 12% over the screen. This is not so bad, but the measurements of brightness on a black pattern are worse. About 0.47 in the center and about 0.70 near the bleeding at the top and bottom. Nearly a 50% fluctuation.
Yes, I know that there are two yellow issues, or maybe three: viewing angle yellow (my LGs were like this but the AUO I have is not. Doesn't really matter much, but I prefer the AUO), straight-on overall yellow (fixable through proper calibration) and lower 1/4 yellow (defect and not fixable)..
What you're saying makes sense, but I still find it hard to believe that the lower 1/4 yellowing and the overall yellowing aren't related in some way. Also, doesn't it seem strange that yellowing in the lower 1/4 has been reported across three manufacturers? If it were the surface layer, you'd think that the problem wouldn't just be in 1/4, nor would it be all manufacturers since they are unlikely to use the manufacturing processes.
What you're saying makes sense, but I still find it hard to believe that the lower 1/4 yellowing and the overall yellowing aren't related in some way. Also, doesn't it seem strange that yellowing in the lower 1/4 has been reported across three manufacturers? If it were the surface layer, you'd think that the problem wouldn't just be in 1/4, nor would it be all manufacturers since they are unlikely to use the manufacturing processes.
I mostly agree but in the ones I've had, tilting makes the yellow in the bottom 1/3 less but does not eliminate it. Compared to a 17" LED or a CCFL display it's very clear that there is yellowing on the bottom that just can't be eliminated. I've seen this on LG and Samsung matte screens. I've seen three LG 17" LED matte screens and none of them had any of this yellowing.
Hello again,
as I already said I got a new panel two days ago. NIow i am not sure if i should call apple again. It is much better than the first, but still a little yellowish. What would you say? I am scared of a worse replacement panel i could get!
Normal look:
![]()
Fully opened:
![]()
And 90° view:
![]()
I know there are better Displays out there as i had one in my old 2.2 model and a friend of mine also has a crystal clear and white panel, so something in me tells me to call again. On the other hand I might be a little petty?
as I already said I got a new panel two days ago. NIow i am not sure if i should call apple again. It is much better than the first, but still a little yellowish. What would you say? I am scared of a worse replacement panel i could get!
Normal look:
Fully opened:
And 90° view:
I know there are better Displays out there as i had one in my old 2.2 model and a friend of mine also has a crystal clear and white panel, so something in me tells me to call again. On the other hand I might be a little petty?
Hello again,
as I already said I got a new panel two days ago. NIow i am not sure if i should call apple again. It is much better than the first, but still a little yellowish. What would you say? I am scared of a worse replacement panel i could get!
Normal look:
Fully opened:
And 90° view:
I know there are better Displays out there as i had one in my old 2.2 model and a friend of mine also has a crystal clear and white panel, so something in me tells me to call again. On the other hand I might be a little petty?
Call apple, you just spent $2000+ on a MBP it shouldnt have a yellow bottom of the screen problem, its a defect case closed. Ive been through many already and they are even giving me a full 4GB of ram for my troubles, for a laptop this expensive you shouldnt accept a defect of the screen as bad as the bottom 1/4th yellow.
Hello again,
as I already said I got a new panel two days ago. NIow i am not sure if i should call apple again. It is much better than the first, but still a little yellowish. What would you say? I am scared of a worse replacement panel i could get!
Normal look:
Fully opened:
And 90° view:
I know there are better Displays out there as i had one in my old 2.2 model and a friend of mine also has a crystal clear and white panel, so something in me tells me to call again. On the other hand I might be a little petty?
dirty screen, but if its ok for .. you should keep it. There is no pure white mbp 15 " Led backlight display now that is as good as old CCFl displays. That is pure fact. They all have these shadows and dark areas.
Which model display is it? Regardless, it's defective and you should return it! As you said yourself, there are displays out there that are much better - why would you settle for less? You paid the same and should expect the same.
Thx for your quick responses!
It is a Chimei (9c6d) and you convinced me of calling apple again.
Maybe the local dealer will even be happy about that, because he gets payed for the repair by Apple
I will give a feedback as soon as my replacement is set up.
Ritschie
It is a Chimei (9c6d) and you convinced me of calling apple again.
Maybe the local dealer will even be happy about that, because he gets payed for the repair by Apple
I will give a feedback as soon as my replacement is set up.
Ritschie
Is it really defective?
I don't know. The middle shot (from the bottom) shows the bottom bar can be made to look white and then the top bar looks funny (Bluish in this photo -- but I guess that depends on the monitor I'm using now.). This is the same thing I have seen on every MBP I've looked at so far. Have you actually seen some that look better than this? I've found I can always find some vertical viewing angle where the top and bottom bars appear the same color. If I take a photo at that point It would appear perfect. If I calibrate it I can make this tint as close to white as I want.
Tell me what you see in his picture that is obviously bad and if possible show a picture of a better screen.
Thanks,
Rich
I don't know. The middle shot (from the bottom) shows the bottom bar can be made to look white and then the top bar looks funny (Bluish in this photo -- but I guess that depends on the monitor I'm using now.). This is the same thing I have seen on every MBP I've looked at so far. Have you actually seen some that look better than this? I've found I can always find some vertical viewing angle where the top and bottom bars appear the same color. If I take a photo at that point It would appear perfect. If I calibrate it I can make this tint as close to white as I want.
Tell me what you see in his picture that is obviously bad and if possible show a picture of a better screen.
Thanks,
Rich
Nice mega bump.
Well it was only April 2008
At least it wasn't April 2007.Seriously I am concerned that this is still happening.
Jeff
Well it was only April 2008
Seriously I am concerned that this is still happening.
Jeff
It's not, no new whiner threads have come up.
Honestly, the only update that I have to give is the viewing of even more Penryn MBPs and glossy iMacs that are just plain flawless.
People over react, or they just have piss colored glasses.
There are no flawless MBP LCDs. Period. I can say that after seeing all the MBP displays in the stores, owning well over 10 and seeing many of my friends' computers. Sure, some are better than others, but none are flawless. Here is rather typical backlight bleeding of the 9c82 on the right and AUO 9c80 on the left. The third type I've owned and seen is the LG which has bleeding on the bottom and top, plus has a large dark area in the middle. Is this perfection? Poor picture taken with the iphone...sorry.
I defy anybody to show me a MBP display without significant bleeding, with near-perfect illumination, no shadows anywhere and no color hue - all in ONE display! You might have one aspect that is flawless, but then the others aren't.
So, even if the yellowing is better (which I doubt it is), there are multiple other issues with these displays that have not and probably will not be addressed.
I defy anybody to show me a MBP display without significant bleeding, with near-perfect illumination, no shadows anywhere and no color hue - all in ONE display! You might have one aspect that is flawless, but then the others aren't.
So, even if the yellowing is better (which I doubt it is), there are multiple other issues with these displays that have not and probably will not be addressed.
Attachments
(1) you haven't seen mine.
(2) You haven't seen the 20 that my colleagues work with
(3) We are all aware of how to test for discoloration and poor backlighting
(4) That is a terrible photo
(5) It's not being reported in any major news/internet/tech/electronics forum.
(6) It might just be that random number of 15" books
Not that you don't have a problem, but I can guarantee that I have been looking at just as many screens and testing as many as I can find and asking questions if a certain person doesn't want me downloading test images, and I haven't found a single one that was terrible, and only a few that were slightly noticeable when looking up close in bad lighting.
I've owned a ridiculous number of macbook pros (I'm too embarrassed to count) and have checked out every single macbook pro in the three apple stores. I also have many friends with MBPs. Not one is flawless - they all either shadows, uneven illumination, yellowing or weird color hues - or a combination of these flaws. Not one of the many MBPs I've had or seen have had anything close to a flawless display. A few have been good, none flawless. Many are acceptable under some conditions, but not under other.
It may be that in my random sampling of maybe 50 MBPs or more from different manufacturing weeks and bathces, I just happened to come across all flawed displays, but I think that is improbable. It may be that you've come across that many flawless displays, but I doubt it very much.
yes, as I said, the photo is poor because it was taken with an iphone. I didn't feel like taking out my big camera for this. But that doesn't matter. The issue is there,regardless of camera and these photos perfectly demonstrate what I see on the screen and have seen to various degrees in all MBPs I've handled. If you're in a dark room watching a film, you'll see it too. If ther are lights on, you might not.
The yellowing has been an issue. Just because you don't see it, doesn't mean it isn't there. People's eyes are differently sensitive.
Lots of people are reporting 'perfect' and 'flawless' displays. That would mean:
1. Even illumination with barely any disparity in brightness between various parts of the display. Check out notebookcheck.net for objective measurement of the illumination on a few MBPs - they are below average in this regard, but because they're brighter than average they make up for the unevenness.
2. No shadows, bright strips or bleed around the edges of the display. No vertical beams of light shooting up across the bottom of the display.
3) Even and consistent color rendering throughout the display - no yellow hues or other hues.
4) No color distortion or inversion at the max viewing angles specified by the manufacturer
I don't think you'll find such a display in any MBPs. I don't mean to be combative about this, but I think people are just not seeing because their eyes are not sensitive, or because their usage patterns are limited.
Finally, why not take a picture of yours with a black screen in the dark ? Or other pictures showing your perfect display. I'd like to be proven wrong, as I'm sure a lot of people would who have, like me, given up hope that Apple will include a genuinely flawless LCD in the pro laptops.
It may be that in my random sampling of maybe 50 MBPs or more from different manufacturing weeks and bathces, I just happened to come across all flawed displays, but I think that is improbable. It may be that you've come across that many flawless displays, but I doubt it very much.
yes, as I said, the photo is poor because it was taken with an iphone. I didn't feel like taking out my big camera for this. But that doesn't matter. The issue is there,regardless of camera and these photos perfectly demonstrate what I see on the screen and have seen to various degrees in all MBPs I've handled. If you're in a dark room watching a film, you'll see it too. If ther are lights on, you might not.
The yellowing has been an issue. Just because you don't see it, doesn't mean it isn't there. People's eyes are differently sensitive.
Lots of people are reporting 'perfect' and 'flawless' displays. That would mean:
1. Even illumination with barely any disparity in brightness between various parts of the display. Check out notebookcheck.net for objective measurement of the illumination on a few MBPs - they are below average in this regard, but because they're brighter than average they make up for the unevenness.
2. No shadows, bright strips or bleed around the edges of the display. No vertical beams of light shooting up across the bottom of the display.
3) Even and consistent color rendering throughout the display - no yellow hues or other hues.
4) No color distortion or inversion at the max viewing angles specified by the manufacturer
I don't think you'll find such a display in any MBPs. I don't mean to be combative about this, but I think people are just not seeing because their eyes are not sensitive, or because their usage patterns are limited.
Finally, why not take a picture of yours with a black screen in the dark ? Or other pictures showing your perfect display. I'd like to be proven wrong, as I'm sure a lot of people would who have, like me, given up hope that Apple will include a genuinely flawless LCD in the pro laptops.