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Apple Computing Products:
macOS - Desktop Hardware
iMac 27" suddenly making high frequency noise when LED is set to high brightness?
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<blockquote data-quote="welshred" data-source="post: 1481986" data-attributes="member: 200925"><p>I guess it could well be power supply related.</p><p></p><p>Don't suppose anyone knows how much a replacement power supply unit costs and if it's easy enough to do yourself?</p><p></p><p>Same for an LED board, how much does a board cost. I am capable of installing it myself.</p><p></p><p>The noise is not only apparent when the brightness is up but when I am woking it goes up and down depending on screen activity (changing webpages etc).</p></blockquote><p></p>
[QUOTE="welshred, post: 1481986, member: 200925"] I guess it could well be power supply related. Don't suppose anyone knows how much a replacement power supply unit costs and if it's easy enough to do yourself? Same for an LED board, how much does a board cost. I am capable of installing it myself. The noise is not only apparent when the brightness is up but when I am woking it goes up and down depending on screen activity (changing webpages etc). [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
iMac 27" suddenly making high frequency noise when LED is set to high brightness?
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