P.A.K
1 Nickel

Re: U2410 Green/Pink Failure Analysis

The U2410 has a hardware LUT now, which (as far as I understand things) is actually the first step required in solving the color gradation /  uniformity issues many U2410's have.

All Dell need to do is beef up the LUT features by giving it the ability to adjust several screen zones independently. This wouldn't add THAT much to the cost and, as I've already pointed out (So you can feel free to stop using Eizo as the only alternative example now Chris M) the NEC 2490 WUXI actually costs less in the USA than the Dell U2410 costs in the UK, but yet it manages to include a monitor factory calibrated to at least 15 independent points (NEC call this feature Colorcomp).

If Dell aren't prepared to do this then I agree with some other peoples comments on this thread - I would rather Dell hand pick some screens they ARE prepared to guarantee are substantially free from these green pink type color gradation uniformity issues, slap a U2410 Photographer/Premium edition sticker on it, say it's been checked/calibrated at, ohh, say 9 points on the screen, and charge an extra 20% for this service. I would have gladly paid this to avoid all the annoyance I went through to get a U2410 I was happy with. Otherwise perhaps this is Dells way of saying we should just buy Apple products - since it appears Dell is simply buying Apples leftover panels from LG, which didn't meet Apples required grade..

If Dell are not prepared to do either of these things (offer a U2410 that's been checked at several points rather than just the middle, or offer enough hardware features to make these gradation problems a non-issue) then it means the U2410 is simply not viable for any sort of colour-critical work  - unless you're lucky enough to get one substantially free of tint, and I would even go as far as saying unusable for general browser usage - unless you don't mind one side of your browser being a different colour from the other!  Some of us are extremely active on various forums/blogs and will make sure the word gets out there, which is unfortunate because we'd be cheerleading this monitor (current sRGB/Adobe mode dither issues aside) if it weren't for these gradation issues which Dell are refusing to fix.

To add insult to injury the HP LP2475 (which uses an earlier revision of the same panel, and thus suffers the same green pink tint issues) tends to cost LESS then the U2410, and yet HP *will* exchange the panels for anyone who is suffering from these green pink colour uniformity issues. That being the case, perhaps Chris M would like to ask Dells management to extend that offer to Dells customers? If not then Dell obviously must think its customers are better off buying what's essentially the same screen (minus the LUT) from HP?

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chyn41
1 Nickel

Re: U2410 Green/Pink Failure Analysis

Im getting this email today, hope the issue goes well:

Good day to you.

 

Thank you for contacting Dell. My name is <terms of service violation> and I am from the Executive Escalation Team.

I understand that you are currently experiencing a color gradation problem with the Dell Monitor that you have recently purchased.

As I may need to investigate further with the related team on your queries, please allow me 1 – 2 working days to have this investigated.

At the mean time, should you have further inquiries, please feel free to contact me and I will assist you in every way I can.

 

Thank you for taking time to provide us with your feedback on your purchasing experience. You can be assured that your matter will be my top priority.

You have a lovely day.  

Warmest Regards, 
<Terms of Service Violation>
Executive Escalations Case Manager

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mcantera25
1 Copper

Re: U2410 Green/Pink Failure Analysis


My u2410 was just shipped, and I just came across this forum thread. Naturally I'm concerned that I made a mistake buying the u2410.

I have a few questions for anyone who can help -

1. Would I be better off never opening the u2410 box and just returning it? Would this allow me to avoid the 15% admin/restock fee?

2. Do all of the u2410's have the "grainy text" issue, or is that a problem for only some of them?

3. Does anyone know if the HP LP2475 also has problems? (That model also uses an H-IPS.) Has anyone switched to that monitor from the u2410?

Thanks!

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Highlighted
panzaman
1 Nickel

Re: U2410 Green/Pink Failure Analysis

3. Does anyone know if the HP LP2475 also has problems? (That model also uses an H-IPS.) Has anyone switched to that monitor from the u2410?

Having tried both panels I can say that the HP is a bit rougher than the DELL panel, few differences, the first is that DELL has implemented a proper color matrix for the sRGB and Adobe RGB modes whereas on the HP when you select those color modes the firmware only lowers the general luminosity of the panel and rises the color temperature so that colors look less saturate....I repeat they look less saturated but i reality you still get the radioactive reds and yellows. The other is that I think the HP is 112% of the adobe space whereas instead the DELL is only 95-100% so pratically even in wide gamut mode colors are a little less saturatedon the DELL. The desktop color saturation on the HP is ral bad, I spent some 3 days clibrating and recalibrating trying to get a reasonable result at the end I gave up.

Other (huge) difference is the OSD on the DELL you have much more control on the image and colors, the HP osd menu leaves you baffled with only very basic controls, some controls (black RGB) are only accessible through their Windows software, but since I use a mac I was stuck with the basic on screen OSD.

Tint problems are very similar on bot panels, unfortunately DELL is sourcing cheap panels from LG, these panels are the same that Apple has in their Cinema Displays but for some reason Apple panels are free of tint problems so I guess Apple has a real person doing QC and not automated sensors like DELL has on the production lines, also Apple is quite happy to discard 3 out of 10 produced monitors ifg they show such a problem whereas instead DELL is quite happy to ship the whole production to customers and let them do the QC.

I would say unpack the monitor, check for any problem, if you are not happy send it back and keep sending it back until they supply you with a product that leaves you satisfied. This is a huge problem for them, there are threads on various forums, HardOcp forum has a thread of 50 pages on this monitor problems, Overclockers UK has a thread of 40 pages, HWUpgrade (an italian web site) has a thread of 120 pages, DPReviews, a photographers site has several threads on the argument, a big thread over AVForums...all of them about the tint issues and those threads are full of people that are at their 4th-5th monitor exchange.

It baffles me that DELL hasn't yet stopped production of this unit until such problems are solved. 

 

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scaramonga
1 Nickel

Re: U2410 Green/Pink Failure Analysis


My u2410 was just shipped, and I just came across this forum thread. Naturally I'm concerned that I made a mistake buying the u2410.

1. Would I be better off never opening the u2410 box and just returning it? Would this allow me to avoid the 15% admin/restock fee?

 

I never even opened mine, sent it back as I got it.  We have a thing called the 'Distance Selling Regulations' here in UK, whereby we have 10 days in which to send the item back if we 'change our mind', and thus get a full refund with no fees, which is exactly what I did.

Your chances of not incurring fees will be greatly reduced if the packaging is how you received it.  It ain't worth opening anyway, but if you do, be prepared for a long hard slog and numerous rolls of the dice Smiley Happy

 

 

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mcantera25
1 Copper

Re: U2410 Green/Pink Failure Analysis

Thanks for all of the great info - don't think I've ever found a group so responsive and well-informed. You too Sirmausalot, sorry your post was removed.

First, I think I'll confirm whether the admin fee would still apply if I choose not to open the box. If the fee does still apply, I'll go ahead and try the "lottery." So much has been posted about the issue, it should be easy to tell right away whether mine is defective.

Will be sure to post my results and any tips I learn along the way.

mcantera25
1 Copper

Re: U2410 Green/Pink Failure Analysis

I'm posting this separately from my last post in case Dell has a rule against mentioning new-product rumors.

Has anyone else considered waiting until the u2711 comes out, and just bypassing the u2410 panel issues? These two pages suggest it might be on the way:

http://www.tftcentral.co.uk/news.htm
http://forums.whirlpool.net.au/forum-replies-archive.cfm/1320136.html

Does anybody know if Dell is using a higher-grade panel for the u2711 than it did for the u2410? Is there any way to tell?

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martidi
2 Iron

Re: U2410 Green/Pink Failure Analysis

Hi all,

Just my 2 cents:

I already posted about my U2410 having a slight green-to-red tint that I was able to make disappear by using the "Cool" color mode.

This week-end I took the time to adjust it (by naked eye) by using the Custom color mode and played with the various (and numerous) settings you can find there.

By cutting down red and green gain, I nearly corrected the tint without having a "bluish" screen. This also reduces the issues linked to wide-gammut (fluo-reds, red/green halos around the fonts, etc.). And colors look good. This was something I was used to do for the 2408 as this one is also a WG and looked often reddish.

My RGB gain settings are: 90/91/100.

By looking carefully in low light conditions, some zones on the right side still appears a little redish compared to zones on the left, but this remains acceptable and I notice it mainly because I know there was a problem. Btw no lcd screen of this size is perfectly homegenous.

However, I received another 2410, and on this one the tint was more severe. I was not able to correct it. I must admit I didn't play to much with it. I'll send it back to Dell.

Martidi aka Brhume

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AcerVan
1 Copper

Re: U2410 Green/Pink Failure Analysis

For the guy in Leeds who needed a urgent fix!

Take it to the guys at www.laptoprepairleeds.co.uk

I think he used to be a Dell engineer or something.........

 

Good luck.

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br0d
1 Copper

Re: U2410 Green/Pink Failure Analysis

Looks like I'm waiting for the 2011 model. What a joke.

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