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8.0

Dell S2209W LCD Monitor - flickering horizontal lines

Asked by rjsteffes39 in Computer Displays / Monitors, LCD & Plasma, Video Cards

Tags: LCD, Monitor, flickering, dell, graphics

Hello,

I just purchased a new Dell S2209W LCD Flat Panel Monitor.  It is full HD 1920x1080 resolution.  I am using it as an external monitor to my Dell Inspiron 5150 laptop (with an ATI Mobility Radeon 9000 graphics card).  The monitor is connected to my laptop using VGA input.

The problem is that horizontal flickering lines are showing up on the external LCD.  Everything else looks fine, and the picture is extremely sharp, as I would expect.  It's just that these horizontal lines flicker across the entire length of the screen, and move from the bottom of the screen to the top, with about an inch between each of them.  They are fuzzy and hard to see on a white background, but easy to see on darker backgrounds.  They look similar to the kind of horizontal lines you might see moving vertically on a TV whose signal is a little bit off.

My graphics card drivers are fully up to date.  Also, I checked my display settings, and this particular monitor requires a 60Hz refresh rate - it makes this explicitly clear when trying to change this setting.  So it is set to 60Hz, and cannot be changed from this.  Finally, the actual laptop LCD display does not show the horizontal lines, and displays perfectly fine.  I also tested on an external CRT monitor, and this does not show any lines either.  Only the new external LCD monitor has the horizontal lines.

Please let me know if you have any ideas.  Thanks.
 
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[+][-]06/19/09 12:49 AM, ID: 24664457Accepted Solution

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Zones: Computer Displays / Monitors, LCD & Plasma, Video Cards
Tags: LCD, Monitor, flickering, dell, graphics
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Solution Provided By: nobus
Participating Experts: 4
Solution Grade: A
 
[+][-]06/19/09 01:45 AM, ID: 24664695Author Comment

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[+][-]06/20/09 08:57 AM, ID: 24674204Expert Comment

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