Should I be concerned about this noise that my iMac 2006 makes while I plug it to power source?

  1. It makes this noise only when computer is plugged in and powered off or in sleep mode, noise gets louder when white LED lights up brighter, but while up and running noise stops

  2. No, sorry for not making that obvious, it’s some kind of high pitched noise, you need to turn your volume up, that „crackle” sound it was me plugging it in

  3. It makes this noise only when computer is plugged in and powered off or in sleep mode, noise gets louder when white LED lights up brighter, but while up and running noise stops

  4. A high pitched whine when you plug it in but don’t power it i us a sign of caps getting ready to fail. I would definitely think about recapping the power supply or finding a local repair shop who will

  5. It makes this noise only when computer is plugged in and powered off or in sleep mode, noise gets louder when white LED lights up brighter, but while up and running noise stops

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