Thinkpads Forum

Hi,

I am having screen issues with a T400 - similar to this post (viewtopic.php?f=45&t=123104) and this video (https://www.youtube.com/watch?v=0O2cx9T4DI8). Note when the screen is 'dark' the ThinkPad logo is faintly visible on bootup, but nothing once OS begins. Always works on external monitor. Adjusting angle can 'find' sweet spot where it works again. Power, battery, CAPs LEDs all dark when screen goes dark...? Is it the cable?

Replacement cable - actual PN in machine is 93P4591, with another number on motherboard end of ASMP44C1331 and indeed other numbers(11S42T0968Z1ZE4N8915AP and LCD11S42T0580Z1ZEYW171775 809) !!!

Various sellers are offering the 93P4591 or 93P45493 as interchangable...? Are these interchangable? Does it matter once the cable has camera & bluetooth? Are there different screen-end connectors depending on actual acreen?
Is there another cable without camera / bluetooth (dont use either) that would also fit?

Sorry for the rambling post!! Thanks in advance!

Welcome to the Forum.

Click on the HMM link at the top of this page to download the T400 manual.
You'll find that the T400 has different screens (with CCFL or LED backlight) and with different resolutions.
Hence some cables are for CCFL, others for LED, some have Bluetooth or not and/or webcam or not.
Plenty to choose from.

It would help if you give us the TYPE from the label on the laptop's bottom.

Hi RealBlackStuff,
Thanks for your prompt reply.
Got the HMM, thanks. Had a look through it for T400 section.
I can't seem to get the serial number lookup online to find the machine

Machine details: Type: 6475 B13
Screen is a 14.1" WXGA Lcd: Samsung LTN141W1-L05 P/N 42T0580 FRU: 42T0581. Max res 1280x800.

Found these cables on Ali-Express:
https://www.aliexpress.com/wholesale?ca ... xt=44C5362

Any further advise appreciated!

Dia dhuit!

Your specs ex-factory:
T400 (6475-B13)
Based 6475-R1G: P8400(2.26GHz), 4GB RAM, 160GB 7200rpm HD, 14.1in 1280x800 LCD, Intel X4500HD, CDRW/DVDRW, Intel 802.11agn, Vodafone WWAN, Bluetooth, Modem, 1Gb Ether, UltraNav, Sec Chip, FPR Rdr, Camera, 6c Li-Ion, WinVista Business 32

Serial # for parts lookup: http://pcsupport.lenovo.com/us/en/partslookup

Your screen is a CCFL one: http://www.panelook.com/LTN141W1-L05_Sa ... _8427.html

Cable looks comparison
LED: http://www.ebay.com/itm/111545299644
CCFL: http://www.ebay.com/itm/121514719004
When you buy one, always look very carefully and pick the right one!
Your laptop has CCFL, Bluetooth and webcam, so the cable you need is: 44C5362 a.k.a. 93P4591

Great stuff, many thanks for taking the time to look this up.

Any ideas why some sellers list this FRU (44C5362) with a different part numbers (i.e. 93P4591 versus 93P4593)... ? For example this looks correct:

https://www.aliexpress.com/item/New-Ori ... 68377.html

versus your link (which is correct!):

http://www.ebay.com/itm/121514719004

Thanks again.

That Aliexpress cable looks OK to me, has everything you need.
Lots of sellers don't even know (or care) what they are selling and mistakes, especially with P/N or FRU, are easily made.