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[OM] [OT] Help with monitor problem

Subject: [OM] [OT] Help with monitor problem
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxx>
Date: Thu, 01 Dec 2005 09:00:58 -0500
I need help with a monitor/display adapter problem that I'm not sure I 
can even describe adequately to find help elsewhere on the web.  But I 
know for sure there's at least one person on this list who knows what's up.

I have a 17" Samsung SynMaster 753DF monitor and an NVIDIA GeForce2 Pro 
display adapter.  The monitor produces a stable image with good color 
and contrast but has always exhibited a problem wherein the horizontal 
size of the image varies with horizontal placement on the screen.  It's 
normally not a problem and generally not noticeable unless looking at 
detailed, rectangular things like architectural images.

It is most noticeable with the Windows Freecell game.  With all the 
cards displayed on the game board window one can clearly see a 
difference in the width of the cards as one moves from center to either 
the right or left side of the screen.  At the center a card is 18mm wide 
on the screen.  At the right or left edge of the screen the cards are 
20mm wide.  In between they do a smooth transition.  From my limited 
knowledge of such things I assume the hozizontal oscillator is changing 
frequency as it moves across the screen.

Surprisingly, I just now noticed (by measurement and not by eye) that 
there is a similar problem in the vertical axis but this problem is not 
symmetrical about the center.  Cards at the very top of the screen are 
16mm tall and only 14mm tall at the bottom of the screen.

I just went to examine the monitor on my wife's computer (even cheaper 
stuff than my cheap stuff) and see that the horizontal size problem is 
there as well and even more exaggerated.  The vertical size, however, is 
consistent from top to bottom.

What am I seeing?  Are these typical problems with cheap monitors? 
Drift with age?  Are the display adapters at fault?  What do I need to 
do to fix it?

Thanks.  Any advice will be greatly appreciated.

Chuck Norcutt


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