Blue tinge on T-60 screen

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girish_g_rao · #1 Post by **girish_g_rao** » Thu Dec 21, 2006 10:58 am

I got my T60 couple of days back. I have noted that the screen has a blue tinge. I also have a T41, when I put my T41 next to the T60, the T60 screen appears blueish

Have any of you encountered the same problem

I am sending it back to the Depot today

GG

NS · #2 Post by NS » Thu Dec 21, 2006 11:19 am

No. I did not have any problem with my T60.

Welcome to thinkpads.com open forum.

#3 Post by **RonS** » Fri Dec 22, 2006 12:20 am

Are the screens you're comparing 15" or 14"?

meshua · #4 Post by **meshua** » Fri Dec 22, 2006 5:01 pm

Hi,

I’ve faced the same issue on my 14“ SXGA+ T60 screen: I use a GretagMacBeth Tool to profile my LCD for picture publishing purposes. Once I used the chance to do a “before-after-comparison” I had the same thoughts. While the screen is driven by default settings it drifts into blue slightly. Anyway, you can compensate it using the ATI Control Center but the better way would be profiling it.

Brgds, Torsten.

girish_g_rao · #5 Post by **girish_g_rao** » Mon Dec 25, 2006 4:29 pm

Thanks for the suggestion, so do you think Profiling with the tool will help. Initially i thought it might be a problem with the display card.

I am really disappointed with it. The blue tinge definetly sucks

Any other suggestions from anybody

Have any of you faced the same problem

Thanks
GG

#6 Post by **Kyocera** » Mon Dec 25, 2006 4:33 pm

There are some freeware tools you can download to try and adjust the gamma settings, I used to use it on my t42 to adjust the color, worked pretty good.

girish_g_rao · #7 Post by **girish_g_rao** » Mon Dec 25, 2006 5:37 pm

T-60 14.1 XGA-TFT proud owners please respond on the appearance of your screen
Does it also have a blue tinge

Thanks
GG

#8 Post by **Kyocera** » Mon Dec 25, 2006 5:40 pm

Mine does not, can you post a screen shot?

It should be sxga+ right?

And since I'm a mod on this forum and have read throgh the post's since the t60 conference was born, I don't remember reading any with blue(ish) tints, till this one.

EDIT: so which is it? SXGA or XGA?

girish_g_rao · #9 Post by **girish_g_rao** » Mon Dec 25, 2006 5:42 pm

Just looked at the order for my t-60, my screen is a

part no 42R9419

SBB 14.1 XGA-TFT

Let me know if you have a blue tinge issue

Thanks
GG

#10 Post by **Kyocera** » Mon Dec 25, 2006 5:51 pm

I think on the XGA there is gamma setting in windows somewhere if I remember correctly.

#11 Post by **Kyocera** » Mon Dec 25, 2006 6:00 pm

On my R52 XGA, there is a gamma adjustment in the properties of the Intel Graphics Media Accelerator driver, seems like there should be something similar in a t60 with XGA.

claudeo · #12 Post by **claudeo** » Mon Dec 25, 2006 6:22 pm

Kyocera wrote:On my R52 XGA, there is a gamma adjustment in the properties of the Intel Graphics Media Accelerator driver, seems like there should be something similar in a t60 with XGA.

Yes, there is such an adjustment on my T60 with Intel graphics and XGA. Right click the screen and choose "Graphic properties" (not just Properties). But I don't use that. I loaded the sRGB profile in the normal Properties - Advanced and it looks pretty good (within the limitations of that screen).

TPMulanNo1 · #13 Post by **TPMulanNo1** » Mon Dec 25, 2006 6:31 pm

Hi. I think I have a similar problem with the 14" SXGA+ display (TMD, ATI Mobility Radeon x1400) on my new T60. The problem arises as a result of my attempt to fix another one.

I use MS Word a lot and the first thing I noticed when I got my new machine a few weeks ago was that I had trouble seeing black texts against a white background. I had sent it in for repair at a local authorized reseller and, after swapping various parts (including the LCD), they eventually determined that changing the mainboard fixed the problem. So it seemed for the first two days after I brought the machine back.

Before I could send it in again, in the meantime I have been tweaking gamma, brightness, and contrast settings in order to get some legible texts. The default values were 1.00 for gamma, 0 for brightness, and 100 for contrast in the ATI control center. I am now using 0.75 for gamma, -100 for brightness, and 150 for contrast, plus turning on ClearType. The texts still appear fairly gray, compared to a 3 year old display on my other T22.

I did notice that changing the current settings causes black texts to appear blue on some webpages I visited, but that really does not bother me that much. Being unable to see texts clearly is my biggest frustration with this otherwise excellent machine. There is no uneven backlight leakage as far as I could tell. I'm really not sure where the real problem is. Any suggestion from anybody?

beeblebrox · #14 Post by **beeblebrox** » Mon Dec 25, 2006 7:47 pm

You should be glad to have a lighty blue teint, because your display will stay longer useful.

Displays have CCFL tubes as a backlight. There are 3 main tube categories that you can buy: around 3500 kelvin, 5500 Kelvin and 7500 Kelvin. The higher the temperature rating, the bluer the light. (It is like the sun)
It all depends on the tube. There is nothing wrong.

The tube phosporous layers will be consumed by the UV photons over time and the tube will fade to yellow. The CCFLs have usually 2 peaks at around 430nm and 540nm wave length. After 2 years all tubes have a yellow teint, because the blue phosporous layer is degraded fastest. Only the 540nm peak remains strong enough. So a display with a blue teint will stay longer useful. I have experienced this many, many times.

Besides, a blue light keeps you longer awake, while a yellow teint makes you sleepy. (FACT!)

Why don't you just increase the red gamma value slightly to neutralize the blue teint a little bit?

Unfortunately, and as I stated in an other post, it is near to impossible to get a Thinkpad according to a desired specification because manufacturers source their displays from a variety of sources. You have no clue what kind of great/dull and yellowish/blueish or sharp/fuzzy display you get. Therefore notebook reviews can give a T60 an "excellent display" or "dark and milky screen" rating, all depending on the individual notebook the PC magazine received.

beeblebrox · #15 Post by **beeblebrox** » Mon Dec 25, 2006 7:51 pm

TPMulanNo1 wrote:Hi. I think I have a similar problem with the 14" SXGA+ display (TMD, ATI Mobility Radeon x1400) on my new T60. The problem arises as a result of my attempt to fix another one.

You should reduce contrast to 90% and increase brightness to 110%. That's what I found best on my screen (14" SXGA, Samsung).

MOD EDIT: Trim quotes please.

meshua · #16 Post by **meshua** » Tue Dec 26, 2006 6:12 am

beeblebrox wrote:
TPMulanNo1 wrote:Hi. I think I have a similar problem with the 14" SXGA+ display (TMD, ATI Mobility Radeon x1400) on my new T60. The problem arises as a result of my attempt to fix another one.

You should reduce contrast to 90% and increase brightness to 110%. That's what I found best on my screen (14" SXGA, Samsung).

The best solution would be to calibrate and profile your display. After doing this I took notice of the blue tint of my 14" SXGA+ T60 panel.

By the way: who tells me who made my TFT panel? What tools are suitable to get this information.

Brgds, Torsten.

#17 Post by **GomJabbar** » Tue Dec 26, 2006 6:40 am

meshua wrote:By the way: who tells me who made my TFT panel? What tools are suitable to get this information.

There may be a better way to do this, but this is how I recently found out who made mine. I started by first pressing the blue Access IBM button, choosing Learn > System information > Warranty & parts, then reading the FRU number for my display. Armed with this information, I Googled using the FRU number and manufacturer for the search terms (ie: 11P8352 manufacturer). After reviewing several of the hits, I found out that it was Samsung. Below is the web page I pulled up.

http://www.cheeverind.com/parts/11P8352.aspx

EDIT: After posting this, I again went through the same search procedure above and had a hit from an ebay auction that claimed they had a 11P8352 that was an LG panel. I suspect they either had the FRU number wrong or the manufacturer wrong. So you do need to use some caution with this method. I feel that the link I provided above is likely accurate.

Another way to do the search would be to use the FRU number with different manufacturers. See how the hits look with each different manufacturer (ie: Samsung, LG, Hydis).

EDIT 2: I just found out there is a better way. Duh! Armed with the FRU number, go to LCD service parts for your model. The manufacturer is listed with the FRU number.

Service parts list index - ThinkPad General

girish_g_rao · #18 Post by **girish_g_rao** » Wed Dec 27, 2006 11:30 am

Just got a call from the Depot, they say that they have adjusted the screen to bright white and the screen is working as it should be
They will ship it out today, hopefully I dont see that nasty tinge on the screen again

GG

Blue tinge on T-60 screen

Blue tinge on T-60 screen

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