Horrible high-pitched sound coming from my iMac 27"

Discussion in 'Mac Basics and Help' started by Nitrus, Aug 17, 2010.

  1. Nitrus macrumors member

    Nov 20, 2009
    If you're having this problem, try adjusting your brightness. I was experiencing this issue today, and depending on where my brightness slider was... it got worse, better, to non-existant.

    Hope this helps... Perhaps a bug?
  2. FourCandles macrumors 6502a

    Feb 10, 2009
    Had a similar issue on my old iMac G5. Noise almost went away on full brightness.
  3. UpQuark macrumors member


    Jan 8, 2002
    Zushi, Japan
    I would take it back or have it looked at by an Apple Store. This is NOT normal and shouldn't be ignored.
  4. Nitrus thread starter macrumors member

    Nov 20, 2009
    High Frequency Whine.

    Ok, so the screen had some stuck pixels and a horrible whine... This was a replacement screen for a previous bad one with dark clouding... Well they replaced it alright, and scratched my case and foot in the process, which was also replaced after some phone work. Everything seemed okay... high frequency whine is gone, no more stuck pixels, new case... till I discovered a new issue... My computer now has this weird pop static issue in the left speaker. Almost like a walking talking keying up after a sound plays, this continues for 20-30 seconds every time. If i use my duet, it doesn't happen, and the same goes for headphones. I'm at my whits end.

    Second iMac, third screen, second case, third foot... Give me a new one already! You sold me a Lemon!

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