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  1. #1
    SitePoint Wizard Another Designer's Avatar
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    May 2005
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    Monitor makes noise?

    My wide screen HD Dell monitor lets out a subtle high pitch noise when I have it on. When I turn it off it stops. Does anyone know why this is and how I can stop it?

  2. #2
    Robert Wellock silver trophybronze trophy xhtmlcoder's Avatar
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    Apr 2002
    A Maze of Twisty Little Passages
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    A lot of electronic devices actually do; it is likely to be a power supply/transformer whistle/hum but it shouldn't really be a distractable sound or really that audible unless you are in a silent room and close to it.

  3. #3
    SitePoint Member
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    Oct 2009
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    In fact my problem is not so strange: all screens produce noise, electromagnetically speaking, and you can listen to it with a simple radioIt's because of induced currents and magnetic fields.

    That carries an extra problem. We have:

    * All monitors emanate electromagnetic radiation which depends on the shown image, and they can be captured with a radio.
    * Some speakers are capable of syntonizing radio
    * My LCD monitor has integrated speakers and always working, just touching the screen.
    * Conclusion: each image I see, I also hear it, and I don't need extra devices to do that.

    I have a solution: bring the volume to zero, or connect a headphone so that the sound stops going out the speakers. But anyway, if I you want to listen to music, it's better to display a black background at the screen to reduce the radiations and thus interferences.


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