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wuhtzu
What's DOS?
Posts: 2
Registered: ‎08-10-2011
Location: Denmark
Views: 2,538
Message 1 of 7

T420 - Keyboard and touchpad leaves marks on screen?

Hey everyone

 

I purchased a T420 a few months back and two times (just before cleaning the screen with a dry fiber cloth) I've noticed what looks marks made by the keyboard (vertical lines, spaced approximately as the keys) and what looks like marks made by the touchpad (small dots, the touchpad is dotted) on the screen.

 

The marks disappear when cleaning the screen with the fiber cloth which is good so far, but I fear it is the dreaded phenomenon of the keyboard scratching into the screen because the screen touches the keys when the lid is closed. Back in the days and with cheap laptops you see permanent damage to the screen from this.

 

Have any of you guys experienced this with your T410, T420 ect?

 

Should I place a fiber cloth between the keyboard and screen when I close the laptop?

 

It seems silly that Lenovo got this one thing wrong with this laptop..

 

As soon as I see the marks again I will make sure to photograph them and show the pictues here.

 

Best regards

Wuhtzu

Guru
Posts: 948
Registered: ‎06-03-2011
Location: US
Views: 2,514
Message 2 of 7

Re: T420 - Keyboard and touchpad leaves marks on screen?

I have not had any such issues with my T420 (or T400). I would think if it is leaving marks on the screen that there is an issue with the way the machine was put together.

X1 Carbon 3rd Gen Type 20BT i7-5500U, 2560x1440 (non-touch), Win 10 Pro, 8GB RAM, 512 SSD, Intel 7625 WiFi, BT 4.0 | ThinkVision P24q-10 monitor

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Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 2,499
Message 3 of 7

Re: T420 - Keyboard and touchpad leaves marks on screen?

I see TrackPoint marks on my T400 all the time, but rarely keyboard marks.

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
wuhtzu
What's DOS?
Posts: 2
Registered: ‎08-10-2011
Location: Denmark
Views: 2,482
Message 4 of 7

Re: T420 - Keyboard and touchpad leaves marks on screen?

Could it have to do with the fact that I replaced the US keyboard with a danish keyboard? Original Lenovo spare part (customer replacable part) of course. Would be stupid if some of the keyboards were thicker than others, so I guess not... but on the other hand a qualified Lenovo could do a better job than I... but then again it has to click into a few specified holes/pins and one screw has to fit in, so it doesn't leave room for much choice when installing.

 

 

-30-
HDMI
Posts: 142
Registered: ‎12-07-2010
Location: TORONTO
Views: 2,475
Message 5 of 7

Re: T420 - Keyboard and touchpad leaves marks on screen?

 

"Should I place a fiber cloth between the keyboard and screen when I close the laptop?

QUOTE      wuhtzu.

 

 

I would not place anything between the keys/touchpad & the screen as this would be construed as

 

foreign to the design, hence no warranty.

 

Did you have this problem before you replaced the keyboard? If not, the problem lies in the the new

 

keyboard, the instalation thereof, or both. (IMHO)

 

 

Regards,

-30-

I love my LENOVO.
T 410s, WIN 7, 128 SSD, 64 Ult.


I do not work for LENOVO.
Millers147
What's DOS?
Posts: 1
Registered: ‎05-25-2015
Location: United Kingdom
Views: 1,725
Message 6 of 7

Re: T420 - Keyboard and touchpad leaves marks on screen?

I have a new E540 with the same problem!

droodman
Ctrl-Alt-Del
Posts: 13
Registered: ‎03-08-2015
Location: US
Views: 623
Message 7 of 7

Re: T420 - Keyboard and touchpad leaves marks on screen?

And I am seeing it in my brand new T480.

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