Hardware :: G3 Has Loud Whine / Constant And High Pitched

Apr 7, 2009

I have been presented with an iMac G3 400Mhz. It has an annoying loud whine. The whine is constant and high pitched. I am thinking exhaust fan. Is my thinking correct? Is it hard to get to and replace?

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PowerPC :: G5 IMac / High Pitched Whine?

Dec 13, 2008

I have a 1.8ghz G5 iMac with ambient light sensor. When it is on there is a noticeable high pitched whine that is quite loud. It gets even louder if the fan runs more.

If I replaced the fan would this solve the problem or could it be the power supply?

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MacBook Pro :: High Pitched Whine And Freeze Ups From Mid-2009?

May 1, 2012

I've heard of people having issues with high pitched whining coming from the left-side of the keyboard due to the backlight inverter. There isnt much that can be done about it from what i've seen. My issue is slightly different, as I get the high pitched whine nearly at all times, and it changes dependent on the angle of the screen and level of backlight brightness.The biggest problem is that at certain points where the whining is happening, everything on-screen will freeze until Ive messed with the screen angle and played with the backlight buttons, then as soon as i've done that, it almost 'snaps out of it' and things on screen start happening again.

Info:
Mac OS X (10.7.3)

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MacBook :: High Pitched Whine In Boot Camp XP Affected By Brightness?

Nov 1, 2008

I know this happened before in the old Macbook Pros by the look of things when I searched around.Basically there is a noticeable high pitched whine when the screen brightness is either not completely off or max.

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MacBook :: Left Fan Giving High-pitched Whine / Noise Coming When Computer Is Running Off Battery

Dec 26, 2010

This is my first post, and I apologize as it's a little long. I just wanted to get the whole story on the table and clarified.I've had one of the new Aluminum 13" MacBooks (2.0GHz C2D) since Christmas Eve. A few weeks ago, it accidentally fell off my desk at work (not a far drop , but far enough for my heart to stop for a few minutes) when I got tripped up in the power cord under the desk.

For all intents and purposes, the MacBok seemed to work fine. I had one of our IT staff, who happened to be a trained Apple repair tech, take a look at it; the only real damage was that the display hinge had been knocked a little out of alignment. Just ot be on the safe side, I took the machine to the Apple Store, where they told me not to worry about attempting to get the hinge fixed (because I'd be paying a lot of money for such minor work), and the Genius sold me a hardcover plastic Speck case for the MacBook.

While the Speck case certainly looked nice and madethe already sturdy laptop feel sturdier and "protected", I was a little concerned about the amount of heat the machine was giving off within the case. On Sunday, I unplugged the machine from the MagSafe charger for a few hours and left it closed in sleep mode. When I woke it back up, the fan on the left continually gave off some sort of high-pitched whine whenever the computer was in idle mode.

I Googled, searching this site and others, and read about the "CPU whine" in the previous generation MacBooks and MacBook Pros. I also saw where a few people with new Aluminum MacBooks were having this same issue or something similar:

URL

It seems to only make the noise when the computer is running off of the battery - plugging in the MagSafe charger makes the noise quiet 85% of the time (I've found that plugging, unplugging, and replugging will not stop the whine from occurring).

I tried installing QuietMBP as was recommended in some posts, but the only setting that will stop the computer from whining is the "highest" setting (that is, allowing the processor 0 seconds of idle time), which causes QuietMBP to eat up 30% of my processor usage in Activity Monitor and to start the fans going (and, presumably, to significantly lower my battery life).

I don't know whether all of this was the result of the MacBook falling, from it overheating in the case, or something that "just happened". I set up an appointment with the Genius bar for today at 4 PM, but Idiscovered another odd occurance when I set up a new account for the Apple Store (rather than give them my password)

The noise never happened under the new account. Never. I left the machine idle until any and all initial processes were done. No noise. I checked Activity Monitor for stray processes. None. And no noise.

Now I'm bewildered. Could something have gone wrong somewhere in my account, leading to a corruption of a power management utility or process? I'm not canceling my appointment, but I am going to try a few things before I leave. I've already repaired disk permissions, and I'm about ot reinstall the 10.5.6 OS X combo update. Should I try to reset the PRAM too? What other options should I be looking at?

Or should I just wait, and let the Genius Bar folks look into it? As a note, I'm aware I may have to pay for any repairs because they may or may not blame them on the MacBook having dropped (despite two to three weeks passing between the fall and this issue arising), and I'm okay with paying for reapirs (though I will try my best to argue my case, of course).

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MacBook Air :: System Making A Strange Noise / Loud High Pitch Whine

Jun 18, 2008

Hey guys, got a little issue here. I have had a MBA since about march of this year. Just recently I on two occasions the computer has all of a sudden had this loud high pitch whine. It has only happened twice and at both times (if I remember the 1st time correctly) I wasn't really doing anything on the computer. Today specifically it was just sitting idle on my desk. Not sure where its coming from maybe speakers? Any idea to what this is? Should I be setting up an appointment to see a Mac Genius?

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OS X :: High Pitched Noise Through IMac's Internal Mic - How To Fix It

Oct 22, 2007

iMac CD 1.8 here. W/e using my iMacs internal Mic I get a really high pitched noise on the recording. I'm assuming its from the computer. Is it normal or should I get it fixed?

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MacBook :: High Pitched Sound When MBA Connected To TV And Hi-Fi?

Mar 2, 2010

When I connect to an HD TV using the Mini DisplayPort (via a Monoprice Mini DP-DVI dongle and a Monoprice DVI-HDMI cable) and to a Hi-Fi system using the headphone out, the Hi-Fi speakers emit a loud and persistent high-pitched whine.The whine disappears when I disconnect the Mini DP dongle, and also when I disconnect the audio cable so that the sound is playing through the internal speakers. There's no whine when I connect earphones to the MBA instead of the Hi-Fi. I don't have another external display with which to test the issue, so I'm not sure if this sound exists when the computer's connected to, say, an ACD.I'm surprised that this problem doesn't seem to have been mentioned on this board, but it's well documented on the Apple boards (1, 2, 3, 4). The consensus over there is that it's a fundamental design flaw in the MBA and that the only solution is to get a ground loop isolator. Has anyone here had the problem and been successful in getting it fixed by Apple?

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MacBook Air :: High Pitched Whining Noises Coming From CPU?

Feb 1, 2009

I have a 1.86ghz 128GB SSD Rev B Macbook Air. The first one I had made a high pitch whining noise when the processor was idling or under light load. It was a very very high frequency noise, and you could only really hear it when the room was totally quiet - or unless you put your head near the top left side of the keyboard (where the CPU is located). A bit of googling and it seemed that older Macbook Pros also seemed to have had this exact problem.

I took it to the Apple Store and a Genius there took it back and said he could hear it as well. He offered to go through the repair process but since that would have taken awhile, I got an exchange instead from where I bought it from. Unfortunately, this new MBA also makes the same noise but to a slightly lesser degree (though it's possible that the frequency range isn't as high so it's not as piercing... hard to tell though).

Since this is my second RevB Macbook Air with the problem. I realize most people have lower noise sensitivity than me, so you might not notice it unless you place your ear to the top left of the keyboard. (And just to be clear, this is not a fan noise or a noise from the SSD - which don't make noises anyways. I am 100% sure this high pitched noise is coming from the CPU or somewhere on the logic board.)

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MacBook Pro :: High Pitched Noise When The Fans Are Running Around 6.2k RPM

Jul 1, 2009

It's the 2008 model MacBook Pro with the 9600m gt 512 card.

So, I just noticed that when I have my MacBook Pro in High Performance mode it emits an high pitched noise when the fans are running around 6.2k RPM and the CPU and GPU is around 63c. The noise follows the speed of fans, and at idle the noise is gone.

I have uploaded a video of it on youtube here: http://www.youtube.com/watch?v=HioRgTNpNRA

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IMac :: Screen Making High Pitched Noise

Oct 24, 2009

I just bought and received a new 21.5'' iMac and love it but the screen is making a high pitched noise, similar to a dog whistle. It's that sound that isn't loud but pierces through your brain. And the brighter the backlight is, the louder is gets. I love this machine but I don't think it should be doing this and it bothers the heck out of me. I called Apple and all they said was to bring it to the Genius Bar.

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MacBook Pro :: Odd High Pitched Noise Like Mosquito Ringtones

Nov 20, 2009

My 13" Macbook Pro has started making an odd, high-pitched noise, kinda like one of those 'mosquito' ringtones. It's pretty quiet so I can only hear it at night when the computer is beside my bed on the nightstand. However it's odd in that, it's always present UNLESS I scroll in Firefox. As long as I'm scrolling in Firefox, the sound stops. It seems to be coming from the left side of the computer.

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MacBook Pro :: Random High Pitched Chirps Emanating From Keyboard

Nov 30, 2009

I've been getting these high-pitched chirps (beeps? cheeps?) emanating from the upper left quadrant of the keyboard. They seem to happen when I'm doing some heavy photo processing or such. They're not the chirps that have been reported with some MB and MBP on booting up. I've had them now for months, and while I don't think they've got much worse, they've not gone away. I can't seem to make them happen, either.

I've called in to Apple (Applecare runs out in two weeks) to get a case started and will be taking it in to a genius bar to have them run a hardware test. I just wanted to do some due diligence and check in this forum to see if others know about this and what it might be. My suspicion is that it's a logic board issue (though I think this may be something I'd read when it first came up and I was checking on it then). The sound is very electronic, not mechanical, and it has two or three parts to the sound (not one pure beep); it is short, but sometimes happens several times over a few minutes' time.

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OS X :: IMac G5 Speakers Don't Seem To Be Able To Handle High Pitched Sound In A Movie?

May 20, 2010

I have a 24" aluminum iMac G5. I have never had a problem with sound before, and feel like this problem is isolated to a certain DVD but the DVD works on EVERY other player I own. Everything pretty much plays DVDs, so that's many!

So here's my problem: There's parts of this movie that have very high pitched sounds, like electronic sounds that are just sound effects in the movie. Whenever I get to those parts in this movie (maybe even other movies for all I know, I don't play many) and the sound goes quiet, like the speakers can't handle that high pitched sound.

I feel there must be something I can do about it, right? I just use the regular default DVD player application that pops up when I put a DVD in. I tried playing with that equalizer but nothing changed.

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IMac :: High Pitched Noise Heard On Adjusting Brightness

Jul 29, 2010

Just got my new i7 in the mail today after waiting for the refresh for 5 months and it has that stupid high pitched noise that you get when you adjust the brightness. I returned four of these things at the beginning of the year (2 HD failures, 1 power source failure, 1 DOA), one that had the hd failure also had this same high pitched noise.

I love these computers (minus the complete lack of quality control), so I don't want to switch back to PC, but I am at my wits end here. Apple already gave me $150 off this computer for me trouble, but I just don't know if its worth the hassle anymore. I am returning it for sure, but would you ask for more compensation, maybe a ram upgrade or something? I don't like to be the guy who asks for free crap, but the way I see it, they can give me another hundred $, or I can go back to pc and they lose a customer for life.

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OS X :: Horrible High Pitched Sound Coming From My IMac 27"?

Aug 17, 2010

If you're having this problem, try adjusting your brightness. I was experiencing this issue today, and depending on where my brightness slider was... it got worse, better, to non-existant.

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OS X :: Strange Noises Coming From System / High Pitched Noise Near The Keyboard

Mar 27, 2009

I have a Macbrook Pro, one generation old. In the past week, it started making a high pitched noise from the upper left hand corner, near the keyboard. When I pick the computer up and change the angle, I can eliminate the noise.

Just in the past day I noticed that in addition to this high pitched noise, periodically a much louder, different noise comes from the same area, which again, if I move the computer around, I can minimize the noise.

My guess is that there is something loose in the computer, maybe a fan? Should I bring it to apple? My computer has been running pretty slow lately, could this have anything to do with it?

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Mac Pro :: Fan Loud And Constant - Apparently Believes Core 4 Operating At 260 Degree

Oct 18, 2008

As the header says, the fan in my Mac Pro is now operating at a constant 2700 rpms and, per iStat, believes that Core 4 is at 260 degrees. This is from COLD startup as in overnight. All other cores are operating in the low to mid 70s. So, obviously it's impossible for core 4 to be 260 degrees on startup and highly unlikely it would be that hot, ever. I've done the SMC RST thing both ways (button pushing and unplugging).

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IMac :: High-pitched Frequency With External Speakers / Connected Via Firewire Audio Interface

Apr 14, 2004

I hope I'm not double posting. Have any of the other new iMac owners experienced weird frequencies coming from external speakers that are connected to their iMacs?

For example: I have a set of studio monitors that are hooked up to my iMac using a firewire audio interface. Whenever I'm copying data I get an extremely high-pitched frequency coming from my speakers that sounds like my hard drive spinning. Also, whenever I'm scrolling or moving the magic mouse I get a loud buzzing coming from the speakers (especially when scrolling). None of this stuff happened with my previous 20" iMac C2D. I have experienced this issue with all three of the 27" iMacs that I have gone through thus far (due to the yellow tint issue). Does this sound like something I'm just going to have to live with. All of these high pitched frequencies are driving me batty!

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MacBook Pro :: Fan Speed Is Constant High In MBP

Mar 22, 2010

Whenever i open an application both of the fans go to 6000+ rpm in a couple minutes give or take.Strangely web browsing doesn't cause this speed but if a youtube video is played it gets up there fast.Applications such as quicktime and logic gets up there no matter what is played.I have fan control and smcfancontrol, 40GB free, software updated, tried the reset thing (turn off, hold power button, boot), cleared printing operations.The only thing smcfancontrol does for me is it slows down the fans quicker whenever i close all my applications.

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IMac :: Computer Making Loud Constant Noise / Sound Coming After 30 Seconds

Nov 17, 2010

My family just recently upgraded from an old PC to this 27" iMac, during the early part of the summer. While using it over the last little while, I would notice a noise that sounded like a harddrive spinning or possibly some sort of a fan noise. The best way to describe it would probably be as digital noise. It's not incredibly loud, but it's a decent volume, and can get quite annoying. It has a little bit of a squeak to it.

Over the last little while, it's become more constant. When the computer is in use, it'll usually occur quite often. It's quite annoying and obtrusive when I'm watching videos and I'd like to know what it could be.I think our computer is still under warranty, so I'm hoping to find out if it is something wrong, so I can get it replaced.

I've also been wondering if it's a fan, or a regular noise. However, it's so constant that I'm starting to wonder. The other night, I was watching a video and it seemed like it was coming on every 30 seconds for a long span of time. We don't run any memory heavy programs on this computer. If anything, we're just using Firefox, iTunes and/or Messenger. Sometimes Office. There's little to nothing stored on this computer, as it's brand new, so most of its memory is free.

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PowerPC :: Power Mac G5 - Driver Fan At Constant High Speed

Feb 13, 2010

Dual 2ghz Power PC G5 with Leopard 10.5.8Recently had it in for a repair, not with Apple (that expired a longggg time ago) because it would only turn on intermittently. They fixed this problem, citing bad components and also replaced the broken optical drive. However when they gave it back to me it was incredibly loud, they stated that they had to reconnect a fan and that was probably what caused the power problem in the first place. I'm pretty sure though that I had disconnected it unwittingly about a week after the power problem started when I opened it up to change the battery... believing that may be the problem at the time.

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MacBook :: Fan Running At High Speed / Making Superloud Constant Sound

Dec 13, 2009

I just bought the macbook 13" (white casing) today and the first thing I noticed when I turned it on was the fan, it was extremely loud!! I let it run for awhile and it was still constantly loud. Then I tried rebooting twice and still the same problem. My room is only around mid 60F. Is there some function I'm supposed to turn off? Or did I get a lemon macbook?

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Mac Mini :: High Pitched "silent" Noise At Idle?

Jun 2, 2010

I'm getting this softly high pitched sound at idle. I did not have this sound before until this month. I bought this thing in January 2010, yes this year. Does anyone know what could be going on? It does not make that sound when I'm using it, it's only at idle. I can even hear it when I'm lying in bed since this is in my room. Check out my signature to see what I have.

It sounds like a idle fan issue? The computer works fine, but it's just that high pitched noise that bothers me. I should take it to the apple store huh?

I decided to keep my current set up and use my mac mini as a desktop that mostly works as a media server like set up that holds my media for my apple TV if I run out of space on the ATV and later use it as a home theater computer when i get another HDTV. this is just fyi on why I have my mbp and mac mini still yet instead of having only one computer...

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Windows On Mac :: High Pitched Noise When Starting Bootcamp Windows

Sep 1, 2010

after i get to the windows loading screen my mac just throws out a consistent high pitched sound and shows a black screen, i can only get into bootcamp windows when i unplug the computer and start it up with the running windows normally option. is this a virus?

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OS X :: Speakers Unable To Handle High Pitched Sound / Sound Gets Quite

May 1, 2008

I have a 24" aluminum iMac G5. I have never had a problem with sound before, and feel like this problem is isolated to a certain DVD but the DVD works on EVERY other player I own. Everything pretty much plays DVDs, so that's many!

So here's my problem: There's parts of this movie that have very high pitched sounds, like electronic sounds that are just sound effects in the movie. Whenever I get to those parts in this movie (maybe even other movies for all I know, I don't play many) and the sound goes quiet, like the speakers can't handle that high pitched sound.

I feel there must be something I can do about it, right? I just use the regular default DVD player application that pops up when I put a DVD in. I tried playing with that equalizer but nothing changed. Any ideas...?

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Mac :: Constant CPU Usage & High Fans Speed Temp On Black Santa Rosa MacBook

Mar 11, 2010

I only started noticing my fan running a bit on the fast side this evening after installing the new Safari 4.0.5 update. I looked at iStat Menus for temp and CPU. And I was seeing about 190 degrees F for CPU temp with lid closed running ext display. Also there was a constant usage of the cpu (about 30% User and 20% System). There's not one particular process I can see in Activity Monitor that acting out of the ordinary and using a lot of CPU. Just stuff like coreservicesd, WindowServer, launchd that are shuffling around and using about 1-4% of CPU.I ran repair disk permissions and verify disk. Verify Disk found errors and said I need to repair my Macintosh HD, which I have now done successfully.

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Mac :: MacPro Fans Run At High Speed And Very Loud?

Nov 16, 2008

I have a MacPro 2.66 quad-core intel. 4gb ram. I have a hard-drive from my old Powermac that i upgraded to 10.5.5 for this computer. Everytime I put my computer to sleep, and then wake it back up. The fans spin up to maximum speed and all the fans are running really loud and then after about a minute all spin to normal speed.

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MacBook Pro :: System Making Loud Noises / Loud Sound On Start Up ?

Aug 23, 2009

I just bought my MacBook Pro last week. When I power it up, it makes a loud noise for about a second and a half. I think it's the hard drive starting up or the disc drive. I'm not sure which one, but it's pretty loud, so I was just wondering if anyone else noticed this and if it is normal.

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MacBook Pro :: Penryn LCD Brightness Whine?

Mar 5, 2008

I originally purchased a SR MBP a couple weeks ago and come to find out, the LCD was bad and Apple declared it DOA. I went to the Apple store and swapped it out for a new 2.4GHz Penryn MBP. I am running Vista via bootcamp and am noticing a high pitched whine coming from the top left hand side of the keyboard, near the LCD. Puzzled as to the cause, I started playing with some controls to see if anything made a difference and noticed that when I dim the LCD to the min, it almost goes away. When I turn off the LCD it does in fact go away and when I increase it to maximum brightness it also vanishes. The noise seems to be the loudest when the LCD brightness is set in the middle. This problem only occurs in Vista, not OSX. I thoroughly toyed with the brightness in OSX and listed carefully, but like I said, not noise is present.

Should I be concerned and call Apple, or just ride it out? It does bother me a bit considering I use Vista for Office 2007 tasks. However, since the problem only occurs in Vista and not OSX, it this indicative of a software issue, or do you guys think it is hardware related? cmm26red

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