T43p LCD shadow problem

[ptolomej]

Hi all,
On a not even 12 hour old T43p 2668-H8G I noticed shadows in the lower part of the LCD, like a darker border. And that is not the only problem. The next is that as soon as any contrasty transitions are on the screen, you see like a vertical ghost line till the bottom of the screen. That is very annoying.

It can be seen in the image:

going from the bottom of the browser window down where the black vertical border is. When seeing it with ones eyes directly and not through a photographic lens it is far more obvious.

Does anyone has or has a similar problem. The guys at the IBM service haven't managed to fix it till now (its already the 48th day that my laptop is in and it was already returned once but without a fix, just the lcd exchanged - at least what they have said but I have my doubts about it).

As for the lower shadow I got a response that that is normal. A quotation from Lenovo:
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Shadows that are appearing on a number of systems are simply a characteristic of the display and are not a defect.
Repair centers should not take any actions to attempt to resolve it.

These panels use a prism type light guide pipe to get better brightness and this apparent shadow is one of the negative effects of the technology. It is considered that improved brightness in the main focus areas of the screen makes this drawback worthwhile - the shadow is not very noticable at all unless there is a light coloured background behind it (ie. taskbar moved from it's default position). This issue has been discussed with the LCD panel manufacturers and they are aware of this perception from a small number of customers and are aware that there is possible room for improvement on future implementations of this technology; however, this is not regarded as a fault and cannot be resolved.

The issue can appear on any of the new systems with a brightness >150 nits and based on my previous analysis it would appear to be more noticable on higher resolution panels (SXGA+, UXGA) although it can vary from screen to screen.
----

Interesting haven't had that problem on any older thinkpad or a toshiba or dell and here it is a default.

I am wondering if anyone has the same model and could cofirm that he doesn't have the same problem as I want to see if it makes any sense to request a new one or just get my money refunded and try for another type.

regards

[cerebral_mamba]

LCDs with IBM is a big issue. people have replaced their system thrice and yet got some form of dis-functional LCD. Sad to say, but I think even Dell and HP pay more attention to their LCDs than IBM. even I have loads of issues with the LCD.

I would suggest not to take their [censored] and send your system back and ask for a replacement if it is within the 30 day replacement warrantee. I would definitely do so and judging from your picture, its too bad for me to live with it.

[christopher_wolf]

That isn't normal; tell IBM about it and send the T43p in. My T43 hasn't done that and neither have the rest of the Thinkpads I have seen. IBM doesn't have a "problem" with LCDs nor do they give you BS about it.

[Conmee]

Sadly, if that's a 15" Flexview it is normal. Check out webmail.att.net for another high contrast (white login box on dark blue background) and you'll see the same thing. Almost a shadow/ghosting effect similart to those old dual-scan LCDs in the old days. lol

One of the reasons I parted with the 15" T42p, although I miss the color and contrast, was because in certain situations, this would occur. Also, at the very bottom of the screen I noticed the darker "band" going all the way across, but it was perhaps 5 pixels thick, and didn't look nearly as troubling as your picture. Perhaps it's the pic quality, don't know.

I have used about 30 or so T41p/T42p/T43p 15" models and they all had these characteristics to varying degrees. While the contrast isn't as good on my 14" T42p, I don't get that bleeding/shadowing and I don't have any dark bands at the bottom or top of my screen.

Daniel.

[sugo]

2668H8G has a 15" UXGA FlexView LCD. I wonder if other users have seen the same?

[christopher_wolf]

So this would be a difference between the 14" SXGA+ Screens and the 15" UXGA Screens?

[sugo]

Sadly, if that's a 15" Flexview it is normal.

I can attest that my 14.1" SXGA+ doesn't have the ghosting.

http://www-306.ibm.com/pc/support/site. ... MIGR-55304
http://www-306.ibm.com/pc/support/site. ... MIGR-58482

According to IBM page, all T42/43 UXGA FlexViews are made by ID Tech. Some T43 SXGA+ 15" FlexViews are made by LG. Perhaps it's an ID Tech panel issue.

IBM got to be kidding here if this is a universal problem for 15" FlexViews on T42/43. Maybe that's why ID Tech no longer supplies the FlexViews for T60.

[christopher_wolf]

Maybe I am very ignorant about such matters; but what about Hydis? Aren't they going to supply IBM/Lenovo LCD screens?

[Conmee]

Well, I don't want to go on record as saying it is universal. But generally speaking, having seen a good 30+ units is statistically significant to me. I worked with (not for) EDS, who managed the certification and testing of desktop and mobile workstations for General Motors' engineering group. These effects were noticed by them as well. That's one of the reasons GM chose to go with the HP nw8240 instead.

Daniel.

[dr_st]

According to IBM page, all T42/43 UXGA FlexViews are made by ID Tech. Some T43 SXGA+ 15" FlexViews are made by LG. Perhaps it's an ID Tech panel issue.

That would be my first bet. I have the SXGA+ LG Flexview panel, and no shadowing is present, and the only darker portion of the screen are the two bottom corners. The darkness doesn't exceed the clock and start button areas at 1400x1050 and 120DPI. As such, it doesn't bother me. Indeed that could be the reason why Lenovo started putting LG panels on the late T42s and T43s instead of IDTech.

[cyow2000]

Hello. I've had a t20 refurb since summer of 2004. It has started to show the same effects of shadowing. IBM has been a name I have trusted over 10 years. I paid $600.00 Canadian for this unit, and I will probably in the near foture take it to a local computer reseller to see how much more it will cost me vs. buying a new unit which is out of the question.
My 755CD which is 11 years old is used often, but has not even showed its age.

Also, a co-worker has a refurb t20 too, and his screen is as black as hell.
He says he can live with it.....Not my conciense!!!!!

Just wondering If I should bite the bullet and pick up something else from another manufacturer!!!

not plessed in Canada