27" display with 2560 x 1440 pixels resolution Thunderbolt & MagSafe cable attachments

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buzzing / Noise. Power supply issue?

Hi.

A friend have a problem with his 27" Thunderbolt display. Is it really annoying buzzing sound. My first guess would be the power supply??

The display in functioning OK, but that noise is killing the entire office.

How is the front glass attached? Glue? Can't see that in the break down guide.

Anyone else seen this?

Thanks

Here is a video of the issue.

YOUTUBE Video

Answered! View the answer I have this problem too

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Check this teardown on how to get inside.

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Do you live near rattle snakes ;-}

Sadly, you guessed it, the power supply is starting to fail.

Is it still covered under warranty? I would still try an AppleStore first as they may have an extended warranty program for this problem.

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Sadly the warranty expired just a few months ago. Does anyone know where I can get a new power supply? At first I will try the local Apple repair shop.

Thanks.

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Charge your macbook with it's own power cable, don't use the thunderbolt display's magsafe cable. By using the independent cable charger to plug my laptop it completely stopped the noise of the thunderbolt screen.

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Klaus M will be eternally grateful.
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