gHacks technology news » lcd monitor http://www.ghacks.net A technology blog covering software, mobile phones, gadgets, security, the Internet and other relevant areas. Tue, 24 Nov 2009 23:31:44 +0000 http://wordpress.org/?v=2.8.6 en hourly 1 Decrease Noise Of LCD Displays http://www.ghacks.net/2008/10/17/decrease-noise-of-lcd-displays/ http://www.ghacks.net/2008/10/17/decrease-noise-of-lcd-displays/#comments Fri, 17 Oct 2008 09:52:20 +0000 Martin http://www.ghacks.net/?p=7517 In the past two years I bought a 42″ Samsung LCD television and a 24″ HP computer monitor and experienced the same level of noise which originated from the same source in both of them. The noise was a buzzing sound coming from the LCD display that was audible and nerve-racking.

One usually thinks about a faulty monitor immediately but after researching the topic for a few hours I came up with a better solution that eliminated that background noise completely. The noise is directly related to the brightness setting of the LCD monitor. Reducing the brightness of the monitor will start the buzzing sound while a brightness level of 100 will stop it.

I’m not a technician but I suspect that the noise is coming from the power supplies that power the small fluorescent tubes that are responsible for the backlight. Setting the brightness level to 100 eliminated the noise completely on both LCD displays. It was called Back Light and not brightness in the LCD television’s options.

Setting the brightness to 100 resulted in a very bright computer monitor display which I was able to turn down by using the brightness settings of the video card. The LCD television provided two independent settings for brightness and backlight to adjust the display.

Tags: , , , , , , ,

Related posts

]]> http://www.ghacks.net/2008/10/17/decrease-noise-of-lcd-displays/feed/ 13 Monitor Test http://www.ghacks.net/2008/08/28/monitor-test/ http://www.ghacks.net/2008/08/28/monitor-test/#comments Thu, 28 Aug 2008 10:28:50 +0000 Martin http://www.ghacks.net/?p=6503 It is always a good idea to test the computer monitor from time to time, especially after installing new video card drivers, operating systems or purchase a new one. Monitor Test is actually a name of an application that can aid the user in testing a computer monitor.

It was mentioned at the New Morning site which had a short article about it and a link to the developer’s website. Monitor Test is a portable application which makes it a handy tool to include on an USB Stick that contains all kind of tech support tools.

Once executed the application starts in full screen mode showing all the tests that can be performed. Each test can be selected with a left-click of the computer mouse. The utility offers a wide variety of monitor tests like colours, gradients, geometry, speed and text tests.

As you can see lots to test and explore. Some monitor tests span across several screens which can be switched with another left-click of the mouse.

monitor test

Monitor tests works well with aspect ratios of 16:9, 16:10 wide screen monitors and 4:3 monitors. No information about operating system compatibility is available on the author’s website. Monitor Test runs fine on Windows XP.

Tags: , , , ,

Related posts

]]> http://www.ghacks.net/2008/08/28/monitor-test/feed/ 0 Test your LCD Monitor http://www.ghacks.net/2008/06/02/test-your-lcd-monitor/ http://www.ghacks.net/2008/06/02/test-your-lcd-monitor/#comments Mon, 02 Jun 2008 12:25:36 +0000 Martin http://www.ghacks.net/?p=4667 It can happen that your new LCD monitor is having dead or stuck pixels which can be rather unfortunate depending on the location of the pixels and the laws of the country you bought the monitor in. Some dead pixels on a newly bought monitor may not be enough to return it.

It can also happen that dead or stuck pixels appear after using the LCD monitor for a while. It’s a good idea to test the LCD monitor before or immediately after purchase with a software that can reveal stuck or dead pixels. The best case scenario would be obviously a test before buying the monitor to be sure that it does not contain dead pixels.

The tiny application Is My LCD OK [via Shell Extension City] provides several test color schemes that reveal if pixels on the monitor are not working properly. It can be run from any location on the hard drive. The first start uses a German interface, press E to switch to the English interface.

The different test patterns can be loaded by pressing the corresponding button on the keyboard. If you press [1] the screen will change to a white background. If you should find a pixel that is not white you discovered a dead or stuck pixel. By viewing all test patterns you will be able to find all dead or stuck pixels on the LCD monitor.

Hopefully though there will be none or that much that you can return the monitor for a new one.

Tags: , , , ,

Related posts

]]> http://www.ghacks.net/2008/06/02/test-your-lcd-monitor/feed/ 3