Question about Sceptre X20G-Naga II 20.1" Flat Panel LCD Monitor

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ACER AL 1912 Colors bad screen shakes

My Acer AL 1912 started having bad colors and a shaky screen. The colors seem washed out. It is not the video card, the computer, or the settings. It does it no matter what after about 1 minute. I want to open it and replace parts but what part might it be?

Ken
rstein2@aol.com

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Your asking which part you want to replace. try first to check all the connections.

Posted on Feb 20, 2008

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[u][b]LCD Monitor Shadow Effect[/b][/u]
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Lines caused by a bad LCD screen and lines caused by poor sync.

A bad LCD will cause perfectly straight vertical and horizontal lines that don't move at all. This is because the row and column addressing ICs have gone bad, so you will end up with rows or columns of bad pixels.

Poor sync looks more like what you are describing. The picture will flip vertically and horizontally.

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If the monitor has a removable video cable, borrow another one from a friend to test if the monitor is working. If it works, head to your local computer store and buy a new cable.
If the monitor still doesn't work with a different cable, you may have a bad main board. The only way to repair the monitor will be to replace the board.

If you open the monitor, be sure to check for bad capacitors. They can cause all sorts of strange faults. Look elsewhere on this site for how-tos on inspecting capacitors.

If your video cable is not removable, there's not much you can do. You will need a way to test that each pin on the cable connector on the main board conducts to a corresponding pin on the other end of the cable. You can do this if you have a multimeter, or a continuity tester.

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