M4600 IPS Screen Corner Tint

thanks for the quick answer

I am just afraid that the replacement unit will just be worse. comparing my situation to yours, I do have a tint - but not as bad as some did.
Just started to settle into this new OS and been installing all the stuff you need.... don't wanna start all over *lol*

 

Don't worry, you don't have to start over! You've got two options that I can see:

1) Have them send a service tech to your location to replace just the LCD panel (in other words, a standard warranty service)

2) If Dell insists on doing a swap (they might want to see more bad screens for failure analysis or to yell at the vendor) then make sure they send you the new machine before you send your current machine back. That way you can simply swap your hard drive (and RAM or anything else you might have upgraded yourself) and boot the machine as if nothing had ever happened. You won't have to reinstall anything. This is exactly what I did, and it went flawlessly.

 

Just a quick update on the situation:

The next business day after I called Dell, a service tech was at my office (a Friday) and quickly replaced the screen after pointing out the issue.
Bad luck: the spare panel he brought was dead-on-arrival: it had significant posterization and artifacts already visible in the Win7 booting splash screen.
The tech installed my old panel again so I could work on a project with a tight deadline.

Funny discovery: Now the left upper edge has significant white-light leaks - visible when the screen is black (such as booting). That wasn't there before. So I guess some problems of the light-leak phenomenon are related to too tight screws?

 

base on previous posts, seem like the m4600 with ips panel got the problem with lower left corner got green tint and pink on the lower right.

i got a tech came out 3 times to replace the screen, bezel, gpu. but it didnt fix it. they didnt even offer a replacement bc i got my for a sweet deal... so they refund my money...

 

I agree, green in the left and pink/magenta on the right. the frustrating part was, that the replacement screen *also* had the corner tints (besides heavy color-depth posterization defects). so I guess that now two of the screens I could look at have it - it might just be "within specifications"?

Funny that Dell would release such a screen and pitch it to graphic-people without saying how good edge-to-edge evenness is. photographers needing accurate colors tend to check how good a screen is prior to relying their income on it.
On the other hand: it's only visible when the screen is uniformly white...

 

When the QE came to my house to check my screen (see the first page of this thread), he found the problem was definitely related to the screws on the side of the panel. He backed the screws out 1/4 turn and the problem largely went away, though there was permanent damage. The part that wasn't clear was if the problem was with the screws being too long, or the screen glass being too wide. It didn't seem to be the case that they were too tight, however. There could be manufacturing defects with either component, or both components could be within spec and it is a simple case of tolerance stack-up causing troubles. That is why they took my original machine for further analysis, to find which part is to blame. By now, I'd have to imagine they've found the cause. Since new machines are still shipping with the issue, my guess would be that Dell's component manufacturers haven't fixed the problem on their end yet.

This was one of the first things I asked the Dell QE who came to tear my machine apart. When he turned my machine on and saw my screen, he was appalled. He said there was no way the screen should be like that, especially considering the premium we are paying to get them. In fact, he even found some issues with the screen that I hadn't even noticed. He also found several other non-screen issues with my machine that I hadn't noticed either (since he is obviously very familiar with the system and how it is supposed to be). His opinion was that the screen was definitely bad, but it was also the opinion of a single quality engineer vs all of Dell. He wasn't some "bottom of the food chain" Dell employee, though, so I tend to think that his judgment carries some weight. I just hope that upper-management doesn't override him and say "that problem isn't a problem."

 

Just had the technician exchange my panel!

Before uninstalling the old screen I asked him to un-tighten the screws - but nothing changed. So I don't think that the color-cast issue is related to overtightened screws anymore...
Before installing the replacement screen he also didn't tighten the screws the first time to see "what was going on" - and the slight colors in the edges were already present. When tightening the screws for final assembly nothing changed either...

The right lower edge is now almost magenta/pink-free. The left side however does still have green casts.... I'm a little bummed, but happy that the right side is clear now - as I usually don't have anything color critical in the left edge...

You mentioned he found some other issues with the screen you haven't noticed: what were those? Just curious
And what non-screen related issues did he find?

Thanks!

 

Come back to report,
Got a new screen in today, new LVDS and RGB cable, new plastic housing but didnt fix the problem... just a little less leak.
So will have to express depot this thing to Dell.... which is suck since i NEED my laptop.

On another note, i look at the screen that we take out and here is my thought on the problem
The lower left/right corner have one screw each side which no where else on the screen itself have.
The screws is to hold a piece of metal running along the lower side of the screen from left to right. the top of the screen with all cable/boards doesn't have a metal cover like the lower side but just a piece of fabric like cover.
also notice that 4 corners have LED control/light strip there coming from the main board control board.
the upper 2 corners got nothing press on those 4 corners since it cover by a piece of fabric like only.
the lower 2 corners i believe the metal piece put pressure on with the help of the screws.

I would guess we can cut the tape along the metal piece, unscrew the screws, remove the metal plate then test to see what up.

 

AHHHHH...........
is it just me ?????/?
i got a new screen today, and new video card, a new motherboard. but the problem is still there...... it is definitely the screen panel is the problem.
now i put in request to have an exchange system WITHOUT THE IPS but they wont do it..... ....

Also the tech told me there is an LED panel that is UPGRADED part, better than the IPS RGB screen. i asked him where he got it from, he just say it there... i told him to look at dell configuration page to point out which one... he was like ummmm... and i was like ?? can you be more specific ? and he was like it is an LED screen but not IPS RGB LED...

 

I also have problem discussed in this thread. Today I was visited by technician who replaced my display. Unfortunately the problem (to lesser extent) prevails.

Has anyone confirmed that the problem lies in to tight screws? I don't want to call the tech in again, if I can loosen them myself. I saw, what he did today and I'm sure I'm capable of doing this myself. If I only knew that it is about the screws...