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February 18th, 2014 01:00

U2312HM light diagonal stripes

The diagonal stripes run both ways, the ones from bottom left to top right are more noticeable. I can see them on any light color. The monitor was replaced 2 times. Same issue on each monitor. Self test when monitor is unplugged to computer and resets doesn't help anything, but just proves that the issue is directly related to the monitor itself. I made some investigations and found that these "stripes" or "lines" are may be related to matte effect of this monitor. The matte effect is some Plastic mesh siting in front of the monitor in order to tone down the glossy of the internal LCD mask. Is that correct? and what can be done if these "lines" or "stripes" Uncomfortable and annoying?

105 Posts

February 18th, 2014 02:00

That could be awful and annoying but there are ways to get rid of those stripes. Hope these steps will help you:

  1. Run the monitor Built-in Diagnostic which is independent of your computer, computer video card, and cabling.
  2. Turn the monitor's power off
  3. Unplug cables from the monitor except the power cord
  4. Press and hold buttons 1 and 4 down for two seconds
  5. Wait until an all Gray screen appears
  6. Press button 4 and wait until the screen turns to Red
  7. Press button 4 and wait until the screen turns to Green
  8. Press button 4 and wait until the screen turns to Blue
  9. Press button 4 and wait until the screen turns to Black
  10. Press button 4 and wait until the screen turns to White
  11. Press button 4 to exit the test.

If the monitor reveals all of the color screens precisely, the monitor is functioning. The problem could be with either the video card, cabling, or the video card driver.

8 Posts

February 18th, 2014 03:00

As I wrote In Question body, I did this test. It was when the monitor wasn't connected to PC's VGA card or to any other device except 220V AC Cable., but the strips are still there. They are minted and not moving. As I wrote they look like plastic matte filter or like fishing net. Please read again what I wrote and I will be glad to get answer according to the question. Thanks in advance.

Community Manager

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56.9K Posts

February 18th, 2014 07:00

lben,

Post some pictures showing us this defect while running the monitor BID (Built-in Diagnostic).

8 Posts

February 18th, 2014 09:00

One: http://tinypic.com/r/2v9ol1h/8

Two: http://tinypic.com/r/24whojm/8

Three: http://tinypic.com/r/2jdgwfr/8

Image and video hosting by TinyPic Image and video hosting by TinyPic Image and video hosting by TinyPic

Community Manager

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56.9K Posts

February 18th, 2014 14:00

Now post a picture while on the windows desktop. What is the 20 digit alpha-numeric monitor serial number from the rear label? Did you happen to notate the serial numbers from the prior two monitors? Based on those BID pictures, that monitor is within our manufacturer specifications.

8 Posts

February 19th, 2014 08:00

Hi, 

Four:

Image and video hosting by TinyPic

http://tinypic.com/r/16gwsw2/8

Five:

Image and video hosting by TinyPic

http://tinypic.com/r/k55rok/8

http://i61.tinypic.com/k55rok.jpg

Six:

Image and video hosting by TinyPic

http://tinypic.com/r/65nazc/8

http://i58.tinypic.com/65nazc.jpg

Seven:

Image and video hosting by TinyPic

http://tinypic.com/r/2pytlr4/8

http://i62.tinypic.com/2pytlr4.jpg

Eight: The 20 digit alpha-numeric monitor serial number from the rear label:

Monitor 1. S/N: CN-0KF87Y-74445-394-984L

Monitor 2. S/N: CN-0KF87Y-74445-33R-BP1L

Monitor 3. S/N: CN-0KF87Y-74445-28L-373L

Image and video hosting by TinyPic

http://tinypic.com/r/106ixih/8

http://i59.tinypic.com/106ixih.jpg

8 Posts

February 19th, 2014 08:00

Can you show me these specifications written somewhere? How this visible defect of the picture can be regular specification. This is clearly something that messes with the product purpose, to show clean and clear picture!

Community Manager

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56.9K Posts

February 19th, 2014 08:00

It is within specifications. If the other two were the same, they should not have been replaced.

Community Manager

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56.9K Posts

February 19th, 2014 09:00

Can you show me these specifications written somewhere?
* No. That is considered Dell confidential information.

How this visible defect of the picture can be regular specification. This is clearly something that messes with the product purpose, to show clean and clear picture!
* I can only speak to the policies we follow in the USA. Since you are not in the USA, you must escalate to Dell Support for your country.

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