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Is your LCD making a buzzing or high pitch noise?

December 30th, 2008 admin Leave a comment Go to comments

This seems to be a real problem with some LCD Monitors, expecially the entry level 24″ TN panels like the popular Dell E248WFP (which I’m in front of right now).

In my case, the monitor was fine for the first two months. But then started making a buzzing noise… 1) when on, 2) worse when in power stand-by mode, and 3) even worse when turned off.

Thanks Dell!

It seems as if the cheap capacitors manufacturers’ use in these LCDs start to resonate at a high pitch frequency that is very annoying in a quiet room. I’ve read that some people have fixed this by opening up the monitor and putting epoxy around parts … something I was not ready to do.

Adjusting the brightness setting of the LCD managed to fix this problem. Since this changes the power the monitor takes, this also changes the frequency these cheap capacitors resonate at… Sometimes for the better. You’ll have to play around and see what works for you best.

Next time I’m going for a nice non-TN Samsung.

Categories: Dell, Informative, LCD Tags: , ,
  1. admin
    December 30th, 2008 at 12:14 | #1

    BTW, if any of you have this LCD the color settings are not good out-of-the-box.

    Use this profile:

    Red:89
    Green:92
    Blue:97

    And my brightness went from 50 to 65.

  2. Alex Menteer
    May 11th, 2009 at 14:30 | #2

    To fix this, you can also adjust the refresh rate of your monitor, which helps by a lot. I recently fixed my school’s computers with this. It’s fun using your computer skills at school, I’d say.

    To change these settings, follow this path:
    Start -> Control Panel -> Display -> Settings -> Advanced -> Monitor

    Below you will find an area labeled “Screen refresh rate”, or something to that extent.
    Simply lower the Hertz at which the screen refreshes, and the problem should be fixed.

    If you have a computer issue and need it fixed, feel free to e-mail me at:
    cookies_are_ftw@hotmail.com

    Best of luck!

  3. Kelly
    April 4th, 2010 at 22:16 | #3

    Thanks! Lowering my refresh rate fixed the buzzing on my Dell LCD monitor!

  4. May 18th, 2010 at 07:46 | #4

    “Next time I’m going for a nice non-TN Samsung.”

    Yeah, I own MPA panel Samsung SyncMaster 215TW (very satisfied!!), and have this problem too. It started making high pitch noise two months ago.
    I understand, it is already 4 years old (bought in 2006), but it cost me around $900… :/

  5. Meme
    November 10th, 2010 at 14:15 | #5

    I have bought today new viewsonic VX2250wm-LED.
    It buzz like an old crt monitor or broken power unit, high pitch also take place,
    not very loud, but distinctly heard over system case noise.

  6. Bruce
    March 15th, 2011 at 00:23 | #6

    my Samsung TV is making high pitched noises even if its turned off
    I will NEVER EVER EVER buy another Samsung product
    they are crap

  7. John
    February 5th, 2012 at 18:12 | #7

    My Samsung also makes a high pitch noise and so i won’t buy another Samsung monitor again either.

  8. Anonymous
    March 17th, 2013 at 08:33 | #8

    Thanks. Refresh rate was the problem.

  9. Eric
    May 1st, 2013 at 11:38 | #9

    OMG! Thank you!

    That noise has been driving me NUTS!