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T400 - which screen brand to get?

T400/T410/T420 and T500/T510/T520 series specific matters only
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Andrew479
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T400 - which screen brand to get?

#1 Post by Andrew479 » Thu May 15, 2014 12:50 pm

Hello,
I have just purchased used T400 in very good condition, it's flawless, well with one exception, HUGE smudge on the screen.
Since Lenovo equips these laptops with two screens - LG and Samsung, I was wondering if someone could advice me which one to get. I remember reading on Lenovo forums that it's 'unfortunate' these laptops (T400, T500) comes with those screens in 50/50 ratio, however he didn't state which one is better.
So could someone give me a hint?

Thanks!

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Re: T400 - which screen brand to get?

#2 Post by RealBlackStuff » Thu May 15, 2014 2:13 pm

There are different versions with either CCFL or LED backlight (LED in bright or extra-bright), as well as either WXGA or WXGA+ resolution.
They need different LCD cables and either an inverter or a LED-board.
My personal preference would always be LG-Philips over Samsung.
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Re: T400 - which screen brand to get?

#3 Post by Andrew479 » Thu May 15, 2014 3:25 pm

It's WXGA LED. There's different pin count for WXGA vs WXGA+?

Otherwise this screen flickers a lot, is that normal?

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Re: T400 - which screen brand to get?

#4 Post by RealBlackStuff » Thu May 15, 2014 3:29 pm

What are the TYPE and PRODUCTID from the label on the bottom?
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Re: T400 - which screen brand to get?

#5 Post by Andrew479 » Thu May 15, 2014 3:35 pm

Thanks for your help.

TypeID didn't help much as well, 2768-11G - I found only WXGA+ screens under that type.

I had X220 with quite strange screen as well, greenish tint. Later I found that most laptop screen are that sickly green, is it tied to specific screen manufacturer? :-D

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Re: T400 - which screen brand to get?

#6 Post by RealBlackStuff » Thu May 15, 2014 4:36 pm

Type in your serial Number (S/N) without the -sign, and the type (2768) here: http://support.lenovo.com/en_US/product ... ookup.page
Then check the screen P/N or FRU on the list it shows you, only that will tell you if you have CCFL or LED.
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Re: T400 - which screen brand to get?

#7 Post by Andrew479 » Fri May 16, 2014 1:50 am

Actually I can tell myself just by looking at it - it's 100% LED (so I assume 30-pin connector) - the PWM flicker doesn't occur on CCFL screens, ever.
Nevertheless I looked into it and the specifications from Lenovo doesn't match the screen resolution on this one (WXGA+ vs. WXGA) so it must have been replaced by previous user

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Re: T400 - which screen brand to get?

#8 Post by RealBlackStuff » Fri May 16, 2014 3:58 am

The Lenovo specs said it came with WXGA+ (1440x900), but not if that was CCFL or LED.
The P/N or FRU from the parts list that you got can tell you exactly.
Some previous must have broken the LCD and replaced it with the cheaper WXGA (1280x800).
Open the lid, and see what's inside.
The flickering would be caused by a loose/bad LED-board.
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Re: T400 - which screen brand to get?

#9 Post by Andrew479 » Fri May 16, 2014 4:23 am

I'd leave that "opening" part till there's no other option, as it would break seller's warranty. Though right now, don't have much choices.

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Re: T400 - which screen brand to get?

#10 Post by RealBlackStuff » Fri May 16, 2014 4:32 am

If the seller lied to you about the screen resolution, or if you don't like what you got, return it and get your money back.
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Re: T400 - which screen brand to get?

#11 Post by Andrew479 » Fri May 16, 2014 4:46 am

Actually it'd be great if that's possible, but I'm afraid it's not.
The seller installed Refurbished Windows 7 Pro on the machine so it has Win7 sticker on the bottom, so according to our laws, once it has been adjusted to customer's request, it cannot be returned in standard 14-day period.

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Re: T400 - which screen brand to get?

#12 Post by dr_st » Fri May 16, 2014 12:09 pm

Andrew479 wrote:Actually it'd be great if that's possible, but I'm afraid it's not.
The seller installed Refurbished Windows 7 Pro on the machine so it has Win7 sticker on the bottom, so according to our laws, once it has been adjusted to customer's request, it cannot be returned in standard 14-day period.
So if the seller misrepresented the product but customized it, you are stuck with it? I don't believe it. Without even knowing the specific laws of your country - it makes no sense, and would not hold in any court.
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X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad, A21m 2628-GXU

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Re: T400 - which screen brand to get?

#13 Post by Andrew479 » Fri May 16, 2014 2:25 pm

The laptop looks very good otherwise, the seller also agreed on partial refund (about $25).
Anyway will the WXGA+ be compatible with the current WXGA in terms of bezel dimensions?
Thinking of getting this one: http://www.ebay.co.uk/itm/360732184175

Though there's this difficult question, what to do with the current one, hard to say if someone would buy it? Maybe some person building T400 from scratch and in need of cheap replacement parts. The smudge is not that 'bad':
http://dl.dropboxusercontent.com/u/3664 ... nnamed.jpg

but still enough to convince me to buy new screen :D
dr_st wrote:
Andrew479 wrote:Actually it'd be great if that's possible, but I'm afraid it's not.
The seller installed Refurbished Windows 7 Pro on the machine so it has Win7 sticker on the bottom, so according to our laws, once it has been adjusted to customer's request, it cannot be returned in standard 14-day period.
So if the seller misrepresented the product but customized it, you are stuck with it? I don't believe it. Without even knowing the specific laws of your country - it makes no sense, and would not hold in any court.
Actually it was me who requested Win7 to be installed - I needed T400 as a business laptop and Microsoft Refurbished Licensing appealed to me.
Last edited by Andrew479 on Fri May 16, 2014 2:57 pm, edited 1 time in total.

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Re: T400 - which screen brand to get?

#14 Post by dr_st » Fri May 16, 2014 2:55 pm

A partial refund does seem a fair solution.
Thinkpad 25 (20K7), T490 (20N3), Yoga 14 (20FY), T430s (IPS FHD + Classic Keyboard), X220 4291-4BG
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad, A21m 2628-GXU

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Re: T400 - which screen brand to get?

#15 Post by Andrew479 » Thu May 29, 2014 12:43 pm

So I did buy LP141WP2 only to find that it's not compatible with the LCD cable I'm now using :evil:
Original screen was LP141WX5 and used thick 30 pin cable.

LP141WP2 uses thin 40 pin cable
Could someone points me to specific Part Number for that cable, prefferably WITH Thinklight and no camera?

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Re: T400 - which screen brand to get?

#16 Post by Tasurinchi » Fri May 30, 2014 3:29 pm

The HMM version I have states only one cable model, FRU 44C9982
IBM Convertible 5140/L40SX/220/240/240X/2*340CSE/360PE/365XD/380D/380E/380XD/380Z/390/560E/560X/2*570/2*600/600E/750Cs/755C/760CD/760EL/760XD/770E
A20p/A22p/A31/i1600/G40/R50p/R61i/S30/SL510/2*T22/4*T4x/11*T6x/6*T40x/6*T5x0/3*W5x0/W700/3*X2x/4*X3x/3*X4x/5*X6x/3*X6xT/12*X2xx/4*X30x/Z60m/3*Z61x

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