Odd buzzing noise when on BOTH AC & Battery

My PowerBook has a strange "buzz" that sounds like white noise (or crickets, like my old G5 used to) when it is plugged into the adapter AND with the battery in. When the notebook is on just battery or just AC power, there is no noise.
What is my problem?

Hi, I had the same problem, at least symptoms. Changing energy usage to low worked fine, but I use graphic intensive software so I need the high performance output. I posted the below information on a separate article as well, but I wanted to share it in case anyone has the same problem and wants a possible better fix.
--- previously posted---
I recently had a loud screeching buzzing noise, not the very faint hard drive or fan sound, but a loud annoying sound. After searching hours online, I found an answer for the problem. (in my case at least)
If you have any speakers plugged into the same energy source (i.e. powerstrip), that may be the problem. I unplugged a set of Sony speakers I had running along the same chain of AC powerstrip outlets, and the noise was gone. The article I found was here: (look for the post by "ST" about midway down this page:
http://bose.infopop.cc/groupee/forums/a/tpc/f/6366055944/m/8671042332/r/38810225 32
(Hope it might help!)

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Loud buzzing noise when I play music and watch videos. Happens through speakers and headphones

Hey guys would really appreciate your help.
I bought a HP laptop in January which started to make buzzing sounds when playing audio from iTunes and YouTube as well. I thought the laptop was faulty so I returned it.
I then got an exchange and instead got a hp-15-d051sa and it does the same thing! I have looked everywhere on these forums to resolve this issue and one source said to uninstall the HP assistant but my laptop is still doing it. It happens on both my speakers and headphones.
Any help will be much appreciated because this has happened on two brand new HP laptops so I'm sure this is happening to other people as well.
Regards,
N

Same with me nothing has changed. However what reduces it for me is if you change your battery settings to high performance. But it still does it, you will just find it will do it less.

Constant electical buzzing noise when off. Normal?

I have a W520 that makes a soft electrical buzzing hum, kind of like a florescent light bulb. It does this only when I turn off the machine, and the hum changes pitch every 2 seconds, but it is constant. The only way to get it to stop humming is if I turn on the machine, or remove and reinstall the battery.
The computer is new. I bought it direct from Lenovo and just received it on 7/14/11. It has been making this noice since I got it, but because this is my very first laptop, I don't know if the noise is normal.
I called Lenovo tech support and upgraded my drivers as advised, but this hasn't solved the problem, so I was told to call Post Sales Department on Monday to see if I can get a replacement W520.
Has anyone ever experienced this with their W520? Is this electrical humming noise normal? I have confirmed that it is not a fan noise, or a hard drive noise. There is no movement or vibration in the machine, it just likes to hum all the time when it's supposed to be off. Our IT guy at work thinks it may have a bad connection somewhere that is causing capacitor noise.
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Thanks.
Solved!
Go to Solution.

Thanks. I got a return authorization and shipped the computer back to Lenovo today. The post sales dept is going to give me a refund when they get the computer, and once I get the refund, I'll have to order a new W520.
Hopefully, the new W520 will not have the buzzing noise problem.
I'm really glad that the post sales dept allowed me to return the computer instead of having me send it to a depot for repairs. I wish they could have just exchanged it for a new one, but because it's over 21 days from the order date, they have to give me a refund instead.

Buzzing noise when iPhone 4s vibrates

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I have the same problem. Even holding my finger on the bottom right corner eliminates the buzzing noise. I think that the screen could be slightly loose.
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I have had a Macbook Pro for at least 3 years. I have always used Google Chrome(in fact as I am writing this it began making this noise while using Safari) to use Google Drive to work on my homework to do other things as well since I find it easiest to use for school. Recently my computer has started making a very loud buzzing noise near the fan areas when I use Google Chrome and it worries me. It had that problem before, but when I took it in before I thought the problem had been fixed. Now 2 years later it is making that noise again and it only goes away when I put my computer to sleep. I am unsure as to what to do about it and it worries me because it is getting to the point where I can't even use my computer to work on it.
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Open the bottom and use a can of compressed air and clean out your fan for dust and possible plastics stuck near fan blade. It will help and if needed replace fan https://www.youtube.com/watch?v=Mu6tKVqdgGI

Odd whine noise, when short sounds stop suddenly

I have an issue which seems to mostly occur after a short sound file finishes - for example, an instant message chime, or being told I have new mail.
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Can't really reproduce it, no. It happens sporadically.
I don't know when it started - possibly quite early on. It only makes the noise when music stops.
Play something and stop it again, and it's fine.
It's almost as if it doesn't really it's finished and continues trying to play something but has nothing to play.
Odd.
Message was edited by: parkibald

Buzzing noise when fast forwarding live tv

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Yes I've been getting this since the new update. Buzzing whenever FF or RW on demand, recordings etc, even sometimes when changing between adds on 4oD. It sounds like something to do with the hard disk. I've just put it down to an ageing box reaching the end of its life, sad really but I suppose 2yrs is what we should expect from these types of products.
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Hi,
I have now experienced for a second time a rather annoying and loud buzzing audio output from ATV2 when I start to watch a movie. It doesn't stop even if I move forward in the movie. If I come out of the movie and listen to anything else through ATV2 then the audio is fine.
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Cheers,
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I have the same issue. Sometimes restarting my MacBook Air2,4 helps. iOS devices and Apple TV play together quite nicely. But I'm deeply disappointed with how Apple TV and OSX play together. It's just very disappointing.

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Hello TommyJon,
Welcome to the HP Forums! I hope you enjoy your stay!
I understand that a buzzing sound is produced when the "W" key is pressed. This is normally a hardware failure, and I would contact HP support for assistance.
You can utilize this website to learn how to contact HP appropriately, based on your region: Contact HP Worldwide
Please let me know if you have any other questions or concerns. Thanks for choosing the HP Forums. Have a great day!
Mario
I worked on behalf of HP.

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Did you not see what happened in the Eniac's?
http://www2.lv.psu.edu/OJJ/courses/ist-240/reports/spring2001/fa-cb-bc-kf/1941-1 950.html

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When I connect my touch to my computer (this happens with Mac and PC), there is a very short buzzing sound that last just a split second that comes from the device. I'm fairly certain it wasn't doing that when I first got it. I can't tell if it's from the internal speaker or something mechanical. Since the touch has a flash drive I assumed there would not be any moving parts.
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Are you sure its the Touch speaker? With my iPhone the wifi makes various sounds that bleed onto my computer speakers. And sometimes I thinks its the iPhone.

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I have the same sound - my MBP is only a week old as well... If you are not happy with it or are having further problems with it reading cd's or dvd'd then you should take it back to your local apple store.
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Fan buzzing noise

Hello, my 13 inch late 2011 (Lion 10.7.5) MBP has started to make a buzzing noise when the fan is running. Its sort of a low E and a constant buzz, no static, so I dont think it has to be cleaned. When the fan gets louder and faster it drowns out the buzzing, so that also makes me worried.
Oh, and if needed, I downloaded a Fan Control pref pane in January.
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Thanks,
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                iStat Results
CPU               24%-45% User
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FAN               5630rpm Exaust
BATTERY      Health 84%
MEMORY      1gb Wired 2.18gb Active
TEMPS          HD- 35deg
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                     Enc Base 1, 2, 3: 30deg
                     Heatsink B- 51deg
                     Mem Bank A1- 47deg
                     Mem Module A1- 54deg
BROWSER    Opera
VERSION      10.7.5
MODEL         Pro, Late 2011, 13"

When I record a video on my iPhone 4s, I play it back and it has this buzzing noise playing, even when I focus on something while filming, when I play the video back, you can hear when I've tapped to focus, how can I fix this?

Ever since I got my Iphone 4s, I have noticed that when I film a video and play it back, it has this buzzing noise and when im in the middle of filming a video and I focus on something, you can hear a click where I have focused when I play it back, is this the microphone? can I fix it myself? or do i have to take my iPhone in to be properly fixed? Help Me please!!

See this veeeeeeeeeery long thread.
https://discussions.apple.com/thread/3404857
It's an issue with hundreds of phones. Some claim it's software related, some hardware, some say it's a mixture of both.
Some people have had temporary success with quitting the Phone.app / restoring as a new phone / restoring from an iCloud backup / disabling Siri / toggling speakerphone on & off...
Unfortunately all of the above only been temporary, with the problem recurring again after a few calls, or a few days etc.
So far the only solution that seems permanent has been to replace the phone. But even so, it's the luck of the draw to recieve a functional phone, and not another faulty one.
I'm completely annoyed as there is no Apple Store near me...... and Apple haven't even acknowledged the issue, despite the above thread being 34 pages long, as of writing.

Odd buzzing noise when on BOTH AC & Battery

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