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Christ_Thor
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Posts: 2
Registered: ‎03-03-2015
Location: US
Views: 7,445
Message 7 of 58

Bright white spot on thinkpad x1 carbon 3rd gen

I have the same problem. It began with to bright spots in the lower part of the panel, one in the left and one in the right corner. They came from one day to the other; now, a few days later, two, larger, non-circular blothes have emerged in the centre-left of the screen. The PC is not even a month old.

 

I did the pixel test mentioned - and it does not appear to be faulty pixels; the blotches remain visible with all colours, except for black, which is basically all the pixels turned off. The shape and size of the blotches also point to something else than pixel error.

 

Any idea what this might be? It is certainly getting worse by the day.

 

Thanks. 

 

3/6/15 EDIT: Moved post to front of discussion for escalation purposes. Amy_Lenovo

marcissa
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Registered: ‎02-10-2010
Location: USA
Views: 7,484
Message 1 of 58

Bright spot on thinkpad x1 carbon 3rd gen

I have a small bright spot that can be easily seen on a white background, but disappears on a black background. What is this, and can something like this spread or get worse?

Doesn't seem like a dead pixel since it is lit it seems. 

Anyone see something like this on their displays? This is a on a new machine. 

Thanks

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 7,479
Message 2 of 58

Re: Bright spot on thinkpad x1 carbon 3rd gen

Is it a single pixel or a sizable area on the display?

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
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TPT1: 1839-23U
marcissa
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Location: USA
Views: 7,474
Message 3 of 58

Re: Bright spot on thinkpad x1 carbon 3rd gen

Hard to tell size of a pixel on these qhd displays but I want to say a pixel or slightly larger..  small but annoying. 

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 7,458
Message 4 of 58

Re: Bright spot on thinkpad x1 carbon 3rd gen

Might be a bright-pixel (the opposite of a dead pixel). Try rubbing it gently with a cloth?

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
marcissa
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Location: USA
Views: 7,455
Message 5 of 58

Re: Bright spot on thinkpad x1 carbon 3rd gen

In addition to the dot I also found in the upper right hand corner that on white background, theres a patch of the same. I think it may have something to do with whatever is behind the panel.. like if there is a foil or something.  They both only show on lighter backrounds. Darks look really good.. I am hesitant to send it back because god knows what I will get as far as a unit the with same or worse issues. I think I can live with it. Already had to send another unit back, this whole purchase is well over a month now. 

SeniorGuru
Posts: 2,757
Registered: ‎12-22-2008
Location: CA
Views: 7,444
Message 6 of 58

Re: Bright spot on thinkpad x1 carbon 3rd gen

You might want to use something like Dead pixel tester to assess how many spots there are. Lenovo has a "dead pixel policy" under which they'll replace any panel that has more than a few (I don't recall the exact number) problematic pixels.

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Message 8 of 58

White spot on thinkpad x1 carbon 3rd gen

I have been asked to investigate these reports.

 

Could you please post pictures of the white spots and your P/N?

 

Thank you,

Christ_Thor
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Message 9 of 58

Re: White spot on thinkpad x1 carbon 3rd gen

Hi Amy Lenovo

It is very hard to capture the bright spots on camera, even though I use a Canon 5D Mark II; they appear much less significant on the photos than they appear when viewing the screen live; moreover, this problem is excarcerbated by the very small image size (333K) that this website allows for. Nonetheless, here are photos of the three spots/blotches that have emerged so far; all are circled in red. 

Not sure what the P/N is, but the S/N is: 15/01.

Thanks for taking this issue serious. I use this laptop for photo-editing, and needless to say, blotches on the screen are unacceptable.

 

Regards, 

Chris

 

3/5/15 Edit: Removed S/N to prevent mischief. Amy_Lenovo

1 Lower Left Corner.jpg2 Centre-left of screen.jpg3 Lower Right Corner.PNG

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 7,265
Message 10 of 58

Re: White spot on thinkpad x1 carbon 3rd gen

I've seen tons of these marks. They tend to change their visibility with viewing angle.

It's either a chemical solvent was applied, or physical abrasion. Either one can damage the coating on the screen and produce these spots.

With how thin these machines are and how little clearance there is, I'm going to go with abrasion. See if the mark lines up with a key on the keyboard.

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

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