Thinkpad T400 LCD problem

Dear Lenovo Expertise,
My thinkpad is T400; 7417-CTO.
For past one wk, their is a constant "thin yellow" line in the right corner of LCD. It sometimes disappears when I press corner of LCD. But still it re-appears. Its driving me nuts.
Pls tell me what to do. Do i need to replace it ?
Regards,
Dr. Khan

Try eBay:- T400 LCD
Marketplace of forum.thinkpads.com • Index page is another alternative, personally I recommend the forum as I have bought quite a few things from there.
Hope it helps.
Maliha (I don't work for lenovo)
ThinkPads:- T400[Win 7], T60[Win 7], IBM 240[Win XP]
IdeaPad: U350
Apple:- Macbook Air [Snow Leopard]
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Lenovo T400 LCD Problem (shut off and bezel light abnormality )

Hello !!! This is regarding a problem with the Thinkpad T400. The problem is -- When the lid is at ~65 degrees , everything works fine. Whereas , when the lid is raised to viewing angle of arounbd 90 degrees , it goes to sleep AND , I noticed that the bezel lights (wifi , bluetooth , Cellular , Caps Lock etc...) also turn off , this normally never used to happen before. Even while the laptop is about to go to sleep, it will keep the bezel lights on till you can see the moon light. Now, even while sleeping , I can't see any moon light. If you have a valuable input , please do share it with me. Excuse me for any spelling errors as I have to bend my head doewn to peek under the display and tyoe .. -- it's painful Thanks a Lot!!!! Matt

Hi ChrisMatthew,
Welcome to Lenovo Community!
I find this issue could be with LCD cable, if you have enough knowledge on system hardware you can check with reseating on both the ends (On LCD panel & System board).
If you are want to try on that then you can also do it with the help of Hardware Maintenance Manual.
Please click here to visit the link where you can get the list of support contact numbers, select the respective region and give a call.
Hope this helps.
Best regards,
Hemanth Kumar

T400 LCD problem

hi guys, my t400 lcd does not included led backlight, and i feel it is terribly dim compare to other notebook such as compaq v3000 and hp dv2000, what is going on? i heard someone said t400 lcd without led backlight are good too, but my lcd seems dim even though i switch to screen brightness to the max, it is not totally dark but it looks dim, can you guys help me?

also do you have the switchable graphics card version? if so switch to intel by going to the power saving mode, and see whether the internal LCD still have this problem.
But what you are describing sounds like an issue with the LCD panel itself, you can get a new LCD for around 150 to 200 dollars on the net.
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

T400 LCD problem possibly connected to power

I have a T400 and recently I have been getting a turqouise flashing line at the bottom of my screen (not more than 1 mm thick). It flashes consistently once every ~4 seconds, and it only flashes when the battery is less than 100%. When my computer is plugged into the adapter and fully charged this is not an issue. I have tried restoring my computer to a point before this issue started, reinstalled the BIOS, reinstalled the video driver, and done a SFS scan, but at this point I am not sure what else I can do. Any suggestions?

also do you have the switchable graphics card version? if so switch to intel by going to the power saving mode, and see whether the internal LCD still have this problem.
But what you are describing sounds like an issue with the LCD panel itself, you can get a new LCD for around 150 to 200 dollars on the net.
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

Problem to come back from sleep mode in Lenovo Thinkpad T400 using Windows XP

Problem to come back from sleep mode in Lenovo Thinkpad T400 using Windows XP. Each time closing the T400 lid and try to make the laptop into a sleep mode for some time, it does not properly come out of sleep mode. Login screen is able to see when opening the lid for the first time, but it only seen for a while before then a black screen on T400 Thinkpad appears. Sometime the hard drive activity can be shown also. And then, to come back I had only one option to hard re-boot.
I tried Fn+F4 and power button once to come back but no use.
Please provide me some solution for this?
Thanks in Advance.

oh sorry and its been closed inbetween uses. When i open it the keyboard doesn't light up and it makes no sound.

Black shadows appears on bottom of the LCD of my Thinkpad T400 laptop!

There are multiple, technically seven, black shadows appearing on the bottom my lcd like black headlights glowing outwards from the bottom. Sometimes it disappears but now it has appeared agian. I'll be thankful for any suggestion.

Hi Mehran94,
Welcome to Lenovo Community!
As per the query we understood that you are facing issue with Display on your ThinkPad T400.
We have verified the image and the issue is related to LCD panel, but I suggest you to check with reseating the LCD cable on both the side which is connected to the LCD panel and also to the system board.
Please click here to visit the link on how to remove the system hardware parts.
Hope this helps.
Best regards,
Hemanth Kumar
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Lenovo ThinkPad T61 14,1" LCD problem

Hi, LCD in my T61 14,1" with nVidia graphics (T61 7664-18G) has failed - I attached an image. External LCD is 100% OK, just internal have this problem (like image in fog, bad readable). I try to replace LCD - problem is still there. What can be the solution? LCD cable, invertor, or it is a nVidia problem (but really just internal LCD problem)? Thanks for help.
Internal LCD (like in fog, no readable text - or very bad):
Link to picture
External LCD (vertical lines just in photo, everything is 100% OK):
Link to picture
Moderator note; picture(s) totalling >50K converted to link(s) Forum Rules

xsuchy09 wrote:
Buy new/used mainboard with integrated Intel graphics (external display in dock width 1920x1200 will not be problem, second display with same resolution will be ok with intel graphic too I think, or?)? Buy another T61/T400 with Intel graphics (because of compatibility and old style keyboard) It is used only for programming, I think that I don't need graphics performance ... Are parts from T61 with nVidia graphics full compatible with parts with Intel graphics (when I will go this way I will have some replacement parts )? Or is it compatible T61 14,1" and T400 in main parts? What will be the best choice? Performance of T61 is sufficient for development of web applications etc.
If you don't need graphic performance and the T61 performance is enough for you I would buy an Intel T61 planar and replace the Nvidia one. RAM and CPU are compatible, but you will need an integrated heatsink since it's different than the discrete one you have now. I can't comment about driving two monitors, I guess you now use both VGA and DVI ports, right?
You can also re-use your hard drive or SSD and WLAN card.
If you go the T400 way (or even T410, it also has a non chiclet keyboard) you will be able to reuse the hard drive/ssd. RAM is not compatible! (DDR3 instead of DDR2)
Hope this helps!
Cheers
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Problem with 3rd party RAM for Thinkpad T400

Hey everyone,
I just installed 1GB Hynix RAM (came from my macbook pro) onto my Thinkpad T400. At first, it booted up fine. I did all the memory tests and everything. No problems found.
However, every once in a while, when I reboot my laptop, the bios beeps once, three times, once, then three times. I looked up the beep codes and called customer service and it has to do with the memory.
Sometimes when I press the power button, the laptop turns on but the screen doesn't. I just have to force it to shut down then restart...then it's fine.
Any suggestions? (besides buying overpriced lenovo branded RAM)
Thanks in advance.

gatorman1122,
umm, i think we've already established that it's DDR3. it's absolutely impossible to make DDR2 modules work in your system even if you removed the check pin from the socket. and, even if you did get it to fit, your system wouldn't even POST. the pins are different in both quantity and mapping.
what hasn't been established, however, are the exact specs (not the type) of the module installed. what speed is the module? what's the part number? is it an original apple module or an aftermarket? again, more info is needed on what you installed.
also, what beep code are you getting? is it the beep code for memory or for something else? you can check codes in the T400 HMM if you haven't already.
ThinkStation C20
ThinkPad X1C · X220 · X60T · s30 · 600

Customize ThinkPad T400 with discrete graphics

In Customize ThinkPad T400 with discrete graphics,why the Display type didn't have the option of 14.1 WXGA+ TFT, w/ led Backlight, Camera ?
I just want to buy it.

That LCD option is most likely out of stock. As soon as the LCD panel is in stock, I'm sure the option will be made available for purchase.
\\ I do not respond to PM regarding individual tech support. Keep discussions in the forum for the benefit of others //

Thinkpad T400S (multitouch) Vs. MacBook Pro

Hello,
I am recently going to purchase a labtop (for work) and am undecided between the Lenovo T400 S (multitouch) and the Mac Book Pro.
Advantage Thinkpad (previous experience)
- My last past 3 laptops are Thinkpad (no defect what so ever)
- Reliable & Strong (I saw about 3 months ago my baby girl (2yrs) standing on the labtop, & it still works )
- Multiple OS (Windows and Linux) support
Advantage MacBook
- Sleek design (Beautiful)
- MAC OS + Other OS (Windows, Linux, Unix) Compatibility
- Presentations style are great
Both are very similar in price (MacBook Pro = Thinkpad +200$ )
Configuration for both are similar:
- solid state drive
- WiFi/WiMax
- processor very similar
MacBook advantage:
- wider screen
- led screen
- bigger solid state drive
T400S advantage:
- multitouch
Questions:
1. Can the T400S support Mac OS? How about Linux (Debian)?
2. How strong is the casing compared to MacBook Pro or other Thinkpad?
3. Multitouch compatibility with which OS (Windows, Linux, Unix, MacOS)?
4. What type of SW works with this multitouch? CAD applications? Google Earth? Office applications? Vi editor?
5. Can this labtop (in theory) run all these applications: http://www.youtube.com/watch?v=89sz8ExZndc
Thanks
Gus

1. It probably needs some work around to do so, but it is not natively supported out of the box.
2. Well you can drive a truck over it, and still relatively undamaged in the hdd, motherboard, etc.... LCD is cracked. Don't think you can do that on a macbook pro. Even dropping a macbook pro is not advisable since the hinge on every generation of Macbooks are so fragile, dropping them could cause the cable in these hinges to break.. oh there is not much adjustability in the Macbook Pro screen hinges, so it can go through the 180 degrees of movement like Thinkpads can.
Oh Macbook Pro have built in battery, and anyone whom ever use laptops and that knows, built in battery is headache, when you need to replace them. And from the past, you can't really when Apple products battery would decide to kick the bucket on you.
It also doesn't have docks. When Macbook Pro dies, it dies, whereas Thinkpads you can take it apart and service themselves relatively easily, and use various parts from other thinkpads to resurrect it. Bit like Frankenstein.
Thinkpad T400s isn't suppose to directly against Macbook Pro, since there are T400 and T500, W500 and W700 to do that.
T400s is basically a X301s with bigger screen, more expansion slots and dock connector (Macbooks don't have them).
Macbook Pro are well designed machines, but they are restrictive in terms of aftermarket parts, serviceability and upgradability. I would also say reliability with Macbook Pro past certain years of use are not great.
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

Win 7 on T400 - driver problems

I just did a clean install of Win 7 on my Thinkpad T400. It had Vista Basic on it previously. My system is Thinkpad T400 2764-CTO.
After updating and installing drivers I still get an exclamation mark in Device Manager.
The devices that still have an exclamation mark:
PCI Serial Port
PCI Simple Communication Controller
I got all my drivers from here.
What drivers do I need to install to fix this problem?
Also, where can I find drivers for the touchpad? I can no longer customize the scrolling feature on it.

I believe I read elsewhere that those are for the Intel AMT drivers. I didn't install those drivers either because I don't really need that capability. The splats don't bother me.
I don't get the on-screen indicators either and I know I installed the hotkey driver. I didn't install the Fn-Space zoom driver because I prefer the one built-into Win7.
Trb--
T400 4GB Win7Ultimatex64
Trb--
T400 4GB Win7Ultimate x64

Thinkpad T400 Screen broken

Basically, I set my laptop down on my books too hard, and the LCD cracked(Not horribly, but I want it replaced).
After a while of searching with lenovo's system, this is what I found:
http://gyazo.com/b8b094e346dd7263d26c5986d48ea8b5.png
So I assume I need an LCD with Manufacturer's P/N of 42T0495? Does it have to have that part number, or is it fine to find any other PANEL LGD 14.1" WXGA from a thinkpad, or do I have to have a LCD with the FRU number that is the same as it says on the page?
Where would you recommend me buy the LCD?
Any help would be appreciated.
thanks
Solved!
Go to Solution.

Will this screen work?
http://www.ebay.com/itm/380653720307?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
According to your posts, I think it does. But I just want to confirm.
Also, from the photos on eBay, the some LCDs for the screen seem to have different cables on the LCD.
When I opened up my laptop, I took a look at the back of the LCD, there was no cable runnning down from it.
T400 screen with no cable running from it:
http://www.ebay.com/itm/Lenovo-Thinkpad-R400-T400-14-1-LCD-WXGA-Screen-B141EW05-V-3-42T0699-grade-b-...
Screen with Cable running down the back:
http://www.ebay.com/itm/ThinkPad-T400-14-1-LCD-Screen-Panel-42T0580-42T0581-Samsung-LTN141W1-L05-WXG...
Or maybe I'm just being really stupid, cause I unplugged a cable when I removed the LCD. Is that what it is?
Take apart video I used:
http://www.youtube.com/watch?v=i2R4oUUM5nc (skip to 3:20 for when he takes off the LCD)
Thanks so much for your help.

T400 LCD discoloration

Hiyas, I have a t400 2764-CTO and Ive noticed a Pink and Yellow discoloration in the bottom right hand corner of my LCD...
http://img100.imageshack.us/img100/6564/img2473r.jpg
I was wondering, what is the cause and how can I fix it? Is it a LCD problem, or a problem with the connector and if so if any of these things can be fixed with the warranty.

discolouration like this is usually the problem with the LCD itself.
This should be repairable under warranty, call 131 426 press 1 and then 3.
But you should put a 3M sticker note on the LCD telling them where to look for the problem.
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

T400 LCD TFT display specifications

Hey everyone,
I was wondering if anyone would have on hand or know where to find information on the display specifications for the T400 LCD TFT display (WXGA, LED backlight).
Specifically I'm looking for:
Model Name/Manufacturer:
Display area:
Pixel Pitch:
Synchronization
Horizontal: (kHz)
Vertical: (Hz)
Display Color: (24bit, 16bit)
Cheers,
J

Welcome to the forum!
Do I understand correctly that you bought a complete new LCD Assembly? Do you have proof from the seller that it was working properly before you bought it?
Can you see a picture if you use a torchlight over the panel?
A faint dark picture could be a defective LCD cable, inverter/LED card or a defective LCD backlight. Since you see a picture I would rule out a motherboard fuse problem.
Edit: Richk was faster!
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A31/i1600/G40/R50p/R61i/S30/SL510/2*T22/4*T4x/11*T6x/6*T4x0x/6*T5x0/3*W5x0/W700/3*X2x/4*X3x/3*X4x/5*X6x/3*X6xT/10*X2xx/2*X200T/4*X30x/Z60m/3*Z61x
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T400 LCD Screen has a dark piont within half year.

T400 LCD has a dark point within half year, which I bought Oct. 2008. Could I get some change or warranty?

welcome to the forum!
you'll need to reference your defective pixel(s) with the current replacement policy to know if it falls under warranty:
http://www-307.ibm.com/pc/support/site.wss/MIGR-69856.html
ThinkStation C20
ThinkPad X1C · X220 · X60T · s30 · 600

Thinkpad T400 LCD problem

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