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  1. #1
    Join Date
    Mar 2004
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    That intense screeching sound...

    Have you ever been in a room with a bunch of computers and heard a really, really high pitched screeching noise? It just happened with my laptop for the first time.
    Some people can't hear it, but I can, and some others that I know.
    It normally lasts for about three seconds.

    I would like to know what in the computer causes this.

    Or maybe I am just imagining this?

    Thanks,
    Jason
    Haven't been on WHT for 6 years!

  2. #2
    Join Date
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    Really high pitched noises on a notebook are most often due to the FL-Inverter. It's the part that generates the high voltage for the fluorescent tubes in the display.
    "Arms discourage and keep the invader and plunderer in awe, and preserve order in the world as well as property... Horrid mischief would ensue were the law-abiding deprived of the use of them." - Thomas Paine

  3. #3
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    Mar 2004
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    Well, it's only happened once with my laptop.

    Normally I hear it on my regular computer (with regular monitor), or in a computer lab with many of the same types of computers.
    Haven't been on WHT for 6 years!

  4. #4
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    On a regular PC/Monitor a high pitched screech can come from a number of sources. Most common are, flyback transformer in the monitor, fan bearing on the PC.
    "Arms discourage and keep the invader and plunderer in awe, and preserve order in the world as well as property... Horrid mischief would ensue were the law-abiding deprived of the use of them." - Thomas Paine

  5. #5
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    On a bus it's usually the brakes! Anyway I heard a loud screech once and it was the hard drive taking a dump on an old 8088 computer.
    73's, Kim
    Everything happens for a reason I make up.

  6. #6
    Join Date
    Mar 2004
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    Originally posted by KimmiKat
    On a bus it's usually the brakes!

    I took the bus for eight years and only missed it twice
    Anyway I heard a loud screech once and it was the hard drive taking a dump on an old 8088 computer.
    This sound isn't really a screech...I don't really know what it is.

    It sounds sort of like...maybe the sound that would be in a sci-fi movie where a laser gun gets charged? It's really high pitched though, so a lot of people can't hear it.
    Haven't been on WHT for 6 years!

  7. #7
    Join Date
    Dec 2002
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    High pitched whine? Grinding noise?

    Whine: Something electronic going. Inverters, and suchwhat
    Grinding: Hard Disk, Fan, CD/DVD Drive or anything else with ball bearings.
    Dan Sheppard ~ Freelance whatever

  8. #8
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    Mar 2004
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    I think it's something electronic.
    It's definitely not grinding.
    Haven't been on WHT for 6 years!

  9. #9
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    Satyr, Chrisalya, Canada
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    I've had CRTs do it, but more commonly I hear it caused by TV sets.
    --

  10. #10
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    Jun 2002
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    I hear anything electronic, even cell phones do it, quite annoying to say the least, TV's are the worse.

  11. #11
    Join Date
    Jul 2003
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    332
    I hear a very slight, but extremely high pitched and annoying whine, when my LCD monitor is turned off. Can't hear it when it's on though.

  12. #12
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    Oct 2002
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    My old CRT died about 1 month after first making that noise.

  13. #13
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    Although, I had a electronic sounding noise on my laptop... I thought it was coming from the speakers, on closer inspection, it was from the hard drive. I got all my important stuff off just a short time before it died completely.
    Dan Sheppard ~ Freelance whatever

  14. #14
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    Sep 2001
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    Sunnyvale, CA
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    Older EGA/CGA (And even some VGA) monitors used to do it all the time when you left them turned on without an input signal (ie PC turned off). I have also heard a lot of TV's do it, as well as some high voltage electrical stuff. The noise doesn't necessarily mean anything bad, but I would prepare for the worse if I were you.
    Jeremy Johnstone
    Personal Blog: http://www.jeremyjohnstone.com/blog

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