Color cast of 8560w Dreamcolor Screen ...

Hi guys, I received my laptop 8560w last week and I found DC screen has a color cast issues. It looks like lower right corner is red and left is green.if u use white background its clean to see ....forgive my bad english.guys did u find the same issues like me ?

 

by the way,hp sevice is really really bad , I have sent 5emails to them this week, yet I receive no answer...

 

I own 8560w with DreamColor display (with webcam - if that matters) and Quadro 2000M graphics card, and there is very similar situation. Pink/red lower right corner and green lower left corner (plus a little bit of pink next to it) when background is set to bright colour (white or grey), and when background is set to dark colour (black), I see white light in a few spots - 1/3 of length of upper edge (a lot), 2/3 of length of upper edge (a little bit), about 1/2 of length of lower edge (a whole lot), and lower right corner (a very little bit). The whole leakage is a very little bit lower now, after about 30 hours of worktime, but still is, unfortunately.

Two days ago I gave HP a call and told them about those issues. They asked if I reinstalled/updated drivers of graphics card and/or BIOS. I had done both many times, so they gave me advice to check whether the problem appears while connected to an external monitor. I will have a chance to do this on Monday or Tuesday, so will post results in a few days.

 

Hokay, so I have checked today what I was supposed to check. External monitor and TV sets (all of them were connected through VGA, had no chance to check DisplayPort, but it does not matter, I believe) displayed everything just fine. That clearly shows up that the internal display is the one to blame.

However, it looks like I will not talk to HP about the issues anymore, because the guys from the shop I bought the computer in promised me to collect my computer and send me a brand new unit if their testing of the first one proves me right.

 

Read THIS POST. This problem is well-known for 8730w and 8740w owners (is not new) and it has a solution. You have a screen incorrectly calibrated at factory. You must insist on this regard to HP and bear in mind you will have to have a lot of PATIENCE to solve this issue, because they will be very hard to get the screen replaced for this reason (my case). Getting a new unit may or not be the solution, but if HP replaces the screen for you it's more reliable, because they REVIEW the screen after the installation (when you get a new computer, NO). The replacement will not be perfect, but it should be better.

Good luck.

 

8760w has this tint as well, I've seen it on 2 devices no and the tint is similar so I cannot call it a calibration error. The tint was quite bad on 8740w on early models, especially the red tint in the lower left corner.

On 8760w this tint is greatly reduced and you don't really notice it unless you look really hard. The lower left corner is a little bit red and the lower right a little bit green. I would not return the computer because of this small tint.

I think this has to do with how the red, blue and green LEDs are aligned behind the LCD. One LED must be the last in the row I guess.

 

As declared above, I have returned mine to the shop a few days ago and have received the brand new unit today. Unfortunately, there are the same issues. Kind of blessing in disguise, they are noticeably smaller in terms of area, intensity, and quantity. The present display is significantly better than the previous one, but still is "pretty f*cking far from okay" (translation: still needs to be replaced by the new one). Yet I will buy NBDO care pack at first.

 

I'm sorry to say, that it doesn't matter how many times you swap it, the issue will still remain because it's nothing wrong with the panel, it's a fault in the design of the panel.

However, distance to the reflector at the end of the display can mean a lot in this case and do things better or worse.

Does anyone know more about these Dreamcolor displays? Are the edge lit or is it a uniform matrix of LEDs?

 

I know that the display itself is good, know that the faulty part is the backlight (to be even more accurate: the way it is designed and placed in the panel). However, as far as I know, you cannot replace a backlight on your own without changing a display, you have to replace the whole panel. Well then, when you replace a panel by well made one, you get the proper picture without any tints et cetera. Thus, that is possible to achieve the proper picture by swaping the panels till you get the desired effect. Or am I wrong and completely all the DreamColor panels are wrongly made / built?

Hard to tell, that may be some kind of matrix of LEDs. This is how it looks like in my unit:
top edge: left 1/3 of length and right 1/3 of length - white / light blue light, central 1/3 of length - green light;
right edge: white / light blue light only;
bottom edge: green light only;
left edge: white / light blue light with green spot at about 1/5 of length from top;
plus there are two red spots - one in lower left corner and one in lower right corner.

 

How come so many fall through quality check? All DreamColor panels I've seen have more or less this tint in the corner, even in 2011 and the tech is a few years old now so they should have got it right.

 

Alright, have been trying to get my dreamcolor display replaced due to the color cast that is described here.

In the Benelux (Belgium, Netherlands, Luxembourg) HP acknowledges that there can be a problem, but they won't replace the screen. (apparently, there is some internal mail saying they are not allowed to change the screen just for this reason)

 

Matias, in Germany there is the possibility to leave complaints at https://h41268.www4.hp.com/live/index.aspx?qid=5708. Color cast and tints are definitely a problem at the 8560w Dreamcolor screens. It had two such screens and both had this problem besides others (e.g. strong IPS glitter, inhomogenity of white color). So I was able to give both machines back and I had the best experience with HP customer support. Sure, you do not want to have a good support but to have a good product where you do not need support. But Dreamcolor seems to be a really big issue on the 8560w.