Power adapter making a high pitched noise

Hi,
I was wondering if it is normal for my power adapter to be making a high pitched noise constantly. The noise stops or lessens very briefly when the computer is doing something (i.e. switching web pages) but, otherwise, it is constant. It is a really annoying high pitched whine. If this is not normal, what can I do about it. Do I need another one? Will Applecare cover it? Thanks!

Whereas I am not sure if this is normal, I figured I'd add that I see a similar problem happening on my power adapter.
I noticed on mine that it only makes the sound when the magsafe LED is green, if it's charging the battery it does not happen.
This started only about 2 weeks ago.

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Why is my computer making a high-pitched noise?

It sounds like a plane taking off. It is not the case...

Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
Runawy applications can shorten battery runtime,affect performances and
increase heat and fan activity
Activity monitor
http://support.apple.com/kb/TS1473
If these tips do not help, contact Apple.
Best.

Time Capsule has high pitch noise

I guess these things are notorious for their internal power supply failing. My time capsule started making a high pitch noise yesterday. Is this a sign of the power supply failing? Any idea of how much it would cost to repair? I have no applecare.

Welcome to the discussions!
Unfortunately, a high pitched squeal is almost always a sign of a power supply capacitor that is failing. Suggest you contact Apple to get the name of a nearby authorized Apple repair shop.
This link may also provide some help on repairs, although I cannot vouch for any of these shops.
http://sites.google.com/site/lapastenague/a-deconstruction-of-routers-and-modems /apple-time-capsule-repairers
Message was edited by: Bob Timmons

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This morning I found that my Time Capsule has started making a high pitched noise. That is really annoying and concerning.
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Same thing happened to me just now. Sounded like air escaping from balloon through a small hole.
I unplugged the TC and waited for a few minutes. Plugged it back in and it simply did it again.
I had a steady amber light come on, but after about 30 seconds, the TC would shut off.

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Did not have this issue with my ipod touch 2nd generation.
Have a Monster cassette adapter in my car (looks to be an earlier model than what is currently for sale at Apple website). ipod touch runs off of battery (not plugged into power source).
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Thanks for the suggestions/questions
If I plug the touch into my wife's car that uses a straight plug-in (no cassette adapter), I don't hear the noise. Unfortunately this is not an option on my car.
Have not tried plugging it into an actual home stereo but can give that a try.
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MikeFar,
You will need to discuss the available option for repair with the respecti've region support. They'll be able to advise you in details.
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I've never had pictures of the mod, as it is it wouldn't show up vey well in a photograph, not to mention that every front panel board is different from one manufacturer to another. Mine came with my Gigabyte Aurora case, but Gigabyte probably didn't manufacture the circuit board itself.
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Hello, magoo657.
Thank you for visiting Apple Support Communities.
Here is an article I would recommend taking a look at. Try all of the steps in this article and if you are still experiencing the issue, see step 9.
iPhone: No sound or distorted sound from speaker
http://support.apple.com/kb/ts5180
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hp support assistant unable to pitch down the microphone and stereo it is a high pitched noise i have a laptop compaq hp
This question was solved.
View Solution.

i have had this problem and while i really do not know what causes the problem(with me anyway),i found that turning the mic boost off cures the problem,just right click on your speaker icon,select recording devices,double click the microphone,select levels tab and turn off the boost,i apologize if this has already been done!

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HI Richard12,
Welcome to the Sony Community!
If the TV produces a high-pitched noise, follow the steps below to troubleshoot the issue.
Change the channel or video input of the TV.
IMPORTANT: If the noise only occurs on a specific channel or input, the issue may be with the signal being received. It may be necessary to contact the signal provider.
Turn off the TV.
Ensure that any audio or video components are connected to the TV properly.
Remove all third party audio or video components connected to the TV.
NOTE: If the issue is resolved after removing third party audio or video components, one of those components causes the issue. To determine exactly which component is causing the issue, reconnect each audio or video component independently and check the status after each component is connected.
Unplug the TV power cord from the AC outlet.
Let the TV set without power for 30 seconds.
Plug the TV power cord back into the AC outlet.
Turn on the TV.
If the issue goes unresolved, remove all connected devices then reset the TV to default settings. Here are the steps.
Press and hold the Power button on the remote until the "Power off" message appears/ is displayed (approx. 5 seconds)
Release the Power button when "Power off" message appears on-screen
The TV will then turn itself off. Wait for a minute before turning it on again
IMPORTANT: Performing a reset does not erase your settings or downloaded apps; it just resets the TV's software.
For further assistance regarding your concern, please contact the Sony offices/Sony representative offices nearest to your place of residence in Asia Pacific region http://www.sony-asia.com/countryselector.html?hpid=countryselector:AsiaPacific. Due to proximity, they are in a better position to respond to your questions or concerns.
If my post answers your question, please mark it as "Accept as Solution"

MacBook MagSafe Sizzling/High-Pitched noise

Hi everyone,
I just recently got this MacBook (Refurb'd) about 6 weeks ago and since then I have been noticing this noise that comes on once in a while when my macbook is on and is plugged into the MagSafe power adapter. It's sorta like a sizzling/squealing/buzzing/high pitched noise. It only comes on once in a while though - like it will stop after a while for like 5 seconds and come back.
Just wondering if it's normal - it doesn't sound normal to me....
Also, i'm in Canada - so there isn't a Mac Store nearby - any suggestions?

It's not normal. If there is no Apple Store nearby, there is still probably an Apple-authorized service provider - check the international Apple pages. Assuming something is wrong, they will exchange it for a new, non-sizzling one.

To Apple Engineer. I hear a high pitch noise when surf flash-intesive sites

Hi. All.
I have a Aluminum PowerBook G4 1.25Ghz SD. I agree this is a great machine. It has a somewhat out-dated G4 Chip in it, I can do almost everything I need.
I've been using this powerbook for 2 years. Since sometime ago, I've heard very annoying "Hige Pitch Noise" from PowerBook. From further investigatin I found that this was a problem related to G4 CPU Processor throttling- so called "NAP" status. In Flash-intensive Web site, I clearly hear the noise.
According to solution suggested by talented apple user, I did followings.
1. Download or Install Developer Tools.
2. Download and Install CHUD tools from ftp://ftp.apple.com/developer/ToolC...ormancetools/
3. After installing chud tools, there maybe Processor pane in preference app.
4. In that processor pane, you should uncheck "Allow Nap" to reduce the notorius High Pitch Noise.(warning: it may increase the power consumption and temperature of CPU a bit, and of course you would see more frequent activities of CPU fan than before)
5. feel the silence.
To Apple.
I think this solution should be suggested from you not users.
Why we investigate, search the web for thosand of bucks PowerBook. Please fix this annoying(yes, annoying enough to cause headache) problem in next OS update.
To readers.
Sorry to my poor English(I live in Seoul, Korea)

These are user-to-user discussion boards. Apple employees do not take part in or respond to posts on these boards.

Power adapter making a high pitched noise

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