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krrg
Blue Screen Again
Posts: 4
Registered: ‎02-07-2015
Location: United States
Views: 1,143
Message 1 of 8

Edge E440 Display Flickering

I've owned my Thinkpad Edge E440 for a couple of months now and have had no issues with it until this week.

 

This week, my screen began flickering and going pure white when I turn it on.  By adjusting the screen back and forth, sometimes the white disappears and the flickering goes away.

 

I suspect a short in the display ribbon, but I'm not completely sure what is going on here.  Any thoughts as to the cause of the whiteness and flickering?

 

Retired Support Specialist
Posts: 3,015
Registered: ‎03-14-2014
Location: Bangalore
Views: 1,121
Message 2 of 8

Re: Edge E440 Display Flickering

Hi Krrg,

 

Welcome to Lenovo Community!

 

As per the query we understood that you are facing issues with Display flickering on your ThinkPad Edge E440.

 

  1. Is the flickering occurs in BIOS mode?
  2. Have you checked the system booting into safe mode?
  3. Check with uninstalling the Graphic driver from the system and restart.

Hope this helps. Do post back if issue persists!

 

Best regards,

Hemanth Kumar



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krrg
Blue Screen Again
Posts: 4
Registered: ‎02-07-2015
Location: United States
Views: 1,097
Message 3 of 8

Re: Edge E440 Display Flickering

The problem is present in BIOS mode and is present in both Windows and Linux (I use both as part of my work).

 

This leads me to think this is a hardware issue, not a driver issue. 

 

Update:

After further investigation, the display cable/ribbon seems to be fine.  I have also tried reseating the connection to the display itself, and that did not help either.

 

It looks like there is something wrong with the display circuitry itself, perhaps a manufacturing defect?

 

 

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 1,092
Message 4 of 8

Re: Edge E440 Display Flickering

Cable might be loose on the motherboard side?

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
krrg
Blue Screen Again
Posts: 4
Registered: ‎02-07-2015
Location: United States
Views: 1,089
Message 5 of 8

Re: Edge E440 Display Flickering

Good thought, but I checked the other end as well, and it seemed okay...

 

With the display bezel off, I can sometimes restore a picture (or at least see some different white noise) by pressing firmly with a plastic probe on a certain spot on the lower right side of the display.  It looks like there is some circuitry underneath, but it is on the opposite side of where the display ribbon connects in, and I can't seem to change anything in the signal by adjusting the display cable anywhere. 

 

The trick with the plastic probe only kind of works, and it usually just changes the type of white display flicker I get, but doesn't generally restore a picture. 

 

The laptop is only a few months old, a shame really, I was actually pretty happy with it until this point.

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 1,057
Message 6 of 8

Re: Edge E440 Display Flickering

Sounds like the panel itself seems to be defective. Still have warranty?

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
krrg
Blue Screen Again
Posts: 4
Registered: ‎02-07-2015
Location: United States
Views: 1,048
Message 7 of 8

Re: Edge E440 Display Flickering

Yes, it should still be under warranty.  I've been surviving off of an external monitor for now.

 

Ideally I could just persuade Lenovo to send me a new panel---I have the tools and so on to install the panel myself, it just looks like my current one is defective.  I'd send it into Lenovo to fix it, but as I use this machine frequently for work-activities, it would be difficult to be without it for any sort of extended period.

 

I used to own a crummy Dell, and they just sent me a new keyboard when their original (literally) started falling apart.  Would Lenovo be willing to do the same with a display? 

 

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 1,031
Message 8 of 8

Re: Edge E440 Display Flickering

The LCD panel isn't a Customer Replaceable Unit on the E440 (or any ThinkPad I think), so pretty much no.

Unless you're really effective at convincing the tech working your case, of course. You'll probably also have to send back the old panel.

There's also the necessity of being 100% sure it's the LCD panel.

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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