23' ACD whine

Discussion in 'Mac Accessories' started by caseys, Nov 15, 2007.

  1. caseys macrumors member

    Nov 1, 2007
    Hi everyone,

    I bought a 23' ACD last December and have only just noticed that when I dim the brightness down from maximum the display starts to emit a little (but seriously annoying in a vexing-go-postal) whine.

    Is this normal? Should I seek apple's word on it whilst it's still less than 12 months old?

  2. gotzero macrumors 68040

    Jan 6, 2007
    Mid-Atlantic, US
    I have two and they are both silent, but I would definitely recommend at least taking it in to document the issue, because the whine may be a variable resistor failing. If you have fading lights at home, you will probably notice that the dimmer they are, the louder they are, because the appliances do not vary the resistance to match the drop in light output.
  3. ivan1234 macrumors regular

    Nov 8, 2007
    I think its your power supply, I had a whine comming from my first 20'' ACD and just returned it. My current 30'' is silent.
  4. djejrejk macrumors 6502a


    Jan 3, 2007

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