PowerPC :: G5 Constant Fan Noise?
Oct 1, 2006
I've got a RevB iMac G5 20" (1.5 GB ram) for a year and a half now, and since the last six months, the fans becomes quickly really loud for no apparent reason. It seems that my iMac think he is an helicopter and he want to take off by spinning it's fans the fastest it can. This is really annoying and it was not like that in the begining. It prevents me from doing audio conversations: the fan are so loud they make it impossible for the other to hear something else than my fans. Try convincing your friends to "switch to mac" with noise like that during an audio conversation! Sometimes just with firefox running I have my fans spinning really fast, with no intention of stopping anytime soon.
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Mar 16, 2008
I have had my MBA for almost a week, and I've had no issues so far. Until now. This is the case: The fan operates as it should. It stays on 2500 rpm at light use, and increases with heavier use. At 2500 rpm I was not able to hear it without putting my ear next to the keyboard. That was yesterday. Today the fan produces a new noise. It isn't very loud, but clearly audible at 2500 rpm in a quiet environment. It's a low, constant, buzzing kind of noise. It also increases with fan speed.
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May 6, 2012
I purchased a 21" iMac a couple of months ago. Today it started making constant buzzing/humming noise. It's not really loud, but it is noticeable and annoying after a while. It stops if I put the computer in sleep mode or turn it off, but it starts back up the moment I turn it back on again. It sounds like it is coming from the bottom of the screen near the speakers. I have tried adjusting the brightness and volume, but to no avail. I also tried lifting the computer off the desk to see if it was just vibration, but that did not make a difference either.
Info:
iMac, Mac OS X (10.7.3)
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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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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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Mar 14, 2007
I had the fans and HDD replaced in my 1.67Ghz PB G4 in January, but I think the fan noise is getting too loud again, plus the HDD randomly squeaks and squeals. The problem with the random squealing is that I can never start the camera on my phone quick enough to record it, and it is completely random! Does anyone know what the normal operating noise is for my laptop, or where I can find this out from? The normal fan noise is OK, but when the processor is under full load and the fans kick in to full speed, it sounds like the vacuum cleaner is on in the room. Should I take it back to the shop? It was 'repaired' roughly 2months ago.
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Jul 29, 2008
I have a G5 twin processor which I bought just before the Intel chip model. It has all sorts of hum and noise in the audio line out when connected to my larger home music system. I have Applecare and the Apple Store tells me that they need to replace the motherboard. I'm awaiting that part to come in now. However, it sounds to me more like old fashioned transformer hum and I'm wondering if anyone else has had this vexing problem -- and if so, how it was finally resolved? I'm too old to keep hauling the heavy unit around much more.
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Apr 10, 2009
Yesterday my PB from 2004 started to make a noise like an angry mosquito. Is it the hard drive dying on me? This is just a take-along-when-I-need-to-be-mobile computer, there's nothing there that needs to be backed up. But I wonder what the noise means.
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Feb 14, 2010
my Mac has developed a problem where it would work fine for a couple of minutes, but then the fans would come on full blast, it all works fine but it's really loud and gets on my nerves quite alot.
would replacing the fan fix this or is it something more complicated then that?
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Sep 18, 2007
How can I decrease the noise coming from my emac?
Sounds like a Jumbo jet taking off. Most of the noise sees to be more from the wooshing of the air through the vents rather than the fan.
I've vacuumed all the dust out of it (I bought it used).
Any ideas that don't require major surgery. I'm wondering if putting a new fan in would help? How much are new fans?
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Oct 5, 2007
My PowerBook G4 has been slowly dieing over the last couple of month, ever since I told it was going to get replaced with a MacBook Pro early next year (hopefully around MacWorld). The Airport signal is slowly decreasing and I'm in the same room as the wireless router, the mouse touchpad in parts is loosing sensitivity, there are randomly hard freezes of the system, etc.
But over the last couple of days I have noticed a strange noise coming from the fan (well that's guess), it sounds like its sighing, I know it sound ridiculous but it's the only thing it reminds me off. It comes and goes (the sighing) but it is constant and it's really starting to: 1) Freak me out that my computer could die and day, 2) Annoy me. I have a sound clip (.amr - also converted to .mov) does anyone know how i can upload it onto here or a link, so people can hear what I'm experiencing.
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Mar 10, 2008
Yeah, so this morning I woke up and awoke my iMac from sleep only to have it make a horrible clicking noise multiple times and stay frozen on the desktop screen. I restarted it and made it spit out my Lord of the Rings DVD, held down the option key and brought it to the boot menu. Started it up from there and it is running fine, no clicking.
Should I be concerned about that horrible click?
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Sep 17, 2008
The machine I'm having trouble with is a Powerbook G4 17" 1.33GHz with 2GB RAM. This machine has been very well cared for. It's mostly been used as a backup machine of late. When I do need to take it out with me, it's transported in a InCase padded Napa leather case.I mostly use it plugged into AC, and when I have it plugged in for longer than 24h, I remove the battery.
It is running for the most part of the day when in use. And when it is in use, it rests on a Cooler Master fan cooler pad to help with the cooling. I just close the lid when I'm done with it. The only time that it is shutdown or rebooted is when an update or installation requires.
So recently I brought it along to a friend's place, and she borrowed the machine to browse the internet. Being unfamiliar with the sleep function, she shut it down. After this, I cannot get it to start up again. Some of the measures I've taken to try and revive it are:
1. Resetting the PMU (shift-ctrl-option-power, wait 5s, start).
2. Removing AC + battery and holding power for 10s.
3. Reseating the RAM (swapping slots, removing one stick at a time, replacing the RAM with the original 512MB stick).
After all this, I still get nothing. I mean nothing. No chime. No grey screen. No spinning gear. No latch light. No fan. No whirrl-clunk from SD. When I say nothing, I want you understand I'm getting absolutely nothing.
There is a weird thing though. The battery indicator (5 LEDs on bottom of the battery) work. The AC ring indicate fully charged (green ring) and charging (orange ring). With the AC ring indicating charging (orange ring), and I invoke the PMU reset, it momentarily turns green before resuming on orange.
I've tried looking high and low for anyone with remotely the same problem, and can't seem to find anything like this.As far as I can tell, I think it's either a logic board failure or a PRAM battery failure.
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Nov 20, 2009
I have a Dual 2GHz PPC G5 2GB SDRAM. I know that these machines will make a 'crunching' noise when processing, etc. but mine won't stop crunching. I recently installed Adobe Creative Suite CS3. Anyone have suggestions of what to try to make this sound stop?
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Dec 10, 2006
My Powerbook has been making a static-y sound from the back of it at random times. It sometimes won't do it all day, and then it will randomly start, and won't go away for a while. It's actually doing it right now! I've tried putting it to sleep for a few minutes, but it started back up again when i woke it up. There, it just stopped again! It can last from a few minutes to an hour, completely randomly! This problem started when I had Apple replace the logic board on the Powerbook a few months back, and numerous repairs later, nothing has changed, so I'm hoping someone here has an easy fix!
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Dec 5, 2007
I posted this awhile back, but didn't find a solution. Anyway, my 12" PowerBook G4 is back from the shop, where, I found out, they haven't worked on it for three weeks or so (it's been there two months!) It still will not boot. The battery charges, and when I press the power button, I can hear the "click" noise that means it's trying to start. I can never hear the HD spin all of the way up. It sounds like it tries and then fails. Nothing ever appears on the screen... ever. I have to do a hard shut down, and then it sounds like the HD spins down. For awhile, it did the "double dinging" noise, but I don't know what that means... and couldn't find anything on [URL:...]about it.
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Jul 29, 2009
I have a problem... I use very processor heavy programs on my iMac G5 and up until about a year ago, I was getting along ok. Here's the gist of it:
1) World of Warcraft/ProTools etc. Prolonged use over many hours eventually caused my imac's fan noise to be unbearable. Even worse, my imac began randomly shutting down almost predictably during high processor use.
2) Was taken to an apple store (while in warranty) and only thing said was that it needed a new logic board. No explanation what actually happened to it. Logic board replaced. Few months later, it's happening again.
3) I am now outside an apple warranty and it will cost me $400+ to get it repaired. It is functional for regular internet use, but on sites like youtube, after a few videos it will likely shut down.
I have opened up my computer several times to inspect the capacitors, but they all look like new. I realize overuse is probably the problem, but if there is a fix I can do myself, I'd at least like to try. The problem is that I have no idea what to do I hate hearing "needs a new logic board" instead of "this part ____ needs to be replaced/fixed"
Specs: iMac G5 17" 2.0ghz generation right before isight macs.
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Dec 29, 2006
I meant to ask this a while ago, but just getting to it now. My powerbook makes this very weird nose that I find not only annoying, but concerning. Whenever I move my mouse around, it sounds like the HDD begins doing some action and it makes a noise similar to running disk utility. Also when I have the screen open and if I carry the powerbook, say for example of I want to hand it to someone or show them something, a medium to high pitched noise comes on again emanating from the HDD area. What the heck is going on?
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Apr 22, 2007
I have an iBook G3 700 Combo Drive 648 megs of RAM and a 20 GB hard drive. Every now and then specifically when I'm running high processor tasks, the hard drive makes this wierd noise, which is a sequence that repeats over and over again. I can't tell if it is writing to the disk or reading from the disk. It makes 3 short noises, and then a long noise:
(short - short - short - long)
Try to imaging that noise. It is just the sound of the hard drive working. This will repeat itself over and over. Sometimes If I have lots of tabs open at once in safari and i open them at the same time that will happened. But after like a minute it will stop. But other times it will keep repeating that noise over and over for ever so I have to manually restart the computer forcefully. (Holding down the power button). The computer also freezes and I get that spinning color wheel.
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Oct 18, 2007
My fans are constantly going on my g4 powerbook and the noise drives me nuts. I do all sorts of work - graphics (CS2), music recording, multimedia... but even when I am just not doing anything intensive the fans are on.
The fans are at full speed now and the temp reads 37C / 98F. I've used an icurve since I got the machine.I've put up with this noisy sound for a couple years now. One person said I need to clean the air vents, like dust is causing the noise. Does anyone know about this?
its a g4 titanium powerbook 867 mhz 768 RAM (ancient I know but it still works!)
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Jul 8, 2008
My mac has worked great for the last 2 years since ive owned it and it just started to act a lil differently about 2 weeks ago. I started to notice that it started to act a lil slower than normal when i was surfing the internet. Then a couple of days ago the computer started making like a buzzing noise , kinda sounds like interference . Like when a cell phone gets close to a stereo system. Sometimes the noise will go away and then when i start opening diff app. that use computer cpu the noise happens again. It was just making the noise and i was dealing with it until the computer started to crash. It would look like the screen was on fire and everything would just freeze. Do you guys think it is the hardrive ?????? and if it was what would be my best option for fixing this. Can i save the stuff that is on my current drive ?? I have a bunch of stuff that is very important on this hardrive.
whats the best place to buy a hardrive if i need one ? and can i buy a hardrive that can hold more than the stock 74.53 toshiba MK8025GAS ?
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Nov 2, 2007
I have a PowerBook G4 15" Laptop and it's recently started making a buzzing noise. It drives me crazy! The noise seems to come from the processor and happens whenever I'm scrolling through web pages, hovering over my dock, launching applications or pretty much whenever the computer is doing anything.
I've googled the issue and found it to be quite common, even being some posts on this forum. Here's the best info I've found so far:
"The squeaking is actually the processor going into Nap mode, and has been noticed on a number of G4 and G5 models. To save power when the processor has a little bit of idle time, it essentially turns itself off. What is happening when it's squeaking like this is it is alternating very rapidly between going in and out of Napping as the processor waits for more things to do. I've noticed that it happens most often during an active SSL connection; an https:// connection, Software Update, checking E-mail on a secure server, or any other secure connections can make this squeaking noise. There are many other ways to produce it too, such as scrolling through a web page or some other more graphic-intensive process.
If you want to check and/or get rid of it, you can download the CHUD tools (part of Apple's Developer Tools, and also available separately). The Processor preference pane (formerly called Hardware) will let you disable Napping, after which point the squeaking should go away. The squeaking also goes away if you reduce processor speed by turning Energy Saver processor performance down to Reduced. However, I'd recommend that you leave Napping enabled (to reduce heat output and increase battery life), so leave it in the default state."
I've downloaded the CHUD tools program and turned off Nap mode, I think. But it still makes the noises! I cannot figure out how to reduce processor speed. So frustrating. Anyone have any advice?
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Jul 3, 2009
My Mum has just turned on our family computer- an iMac G5, 1.9ghz 17" (first model with built in iSight).
It gets to the grey screen with the apple, with the loading icon below it, then after about a minute the fans turn out pretty loudly, and it goes no further, just stays on the grey screen.
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Dec 22, 2006
I have an iBook 500Mhtz PPC G3, 384 RAM, 10GB HD, Dual USB. Several months ago, I opened it up and it simply would not start up. No start up sound, no noise from the fans/HD/anything, motionless. Completely dead. I've held (many times) the PMU, and tried almost anything. Is there anything else I can do to get it to AT LEAST turn on? The battery is dead, and the charger is fine, but the battery won't charge. I tested the charger on a PB G4. I'd rather sell the whole computer as a working computer. I figured I'd get more money that way. do I need to sell it for parts?
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Feb 28, 2008
I have an older 15" powerbook Titanium. About five years old now. Been working pretty well all five years, save for an external hinge I had to replace. Last night, the computer started buzzing from the insides, a buzzing reminiscent of a distant chainsaw. The program i was working in (firefox) just went to the pinwheel of doom and never recovered. I moved to the finder, which did the same. I forced booted. Same noise. Same problems. I can use programs for a few minutes, but then they pinwheel of doom and the computer freezes out.
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Mar 16, 2008
First of all, Noob imac owner here. I was just handed down an old imac g3 400mhz desktop that doesn't power at all.When hitting the power button on the unit or keyboard, the units screen makes a noise. No hard drive or green light comes on at all. At dead silence in the room, i can hear the screen flicker, like a tv would come on. I went to go about and read a few problems before, replaced the battery and even tried a new power cord. Any Ideas?
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Dec 20, 2010
I just got my 2.0ghz Alu Macbook a few days ago and everything works perfectly well, the thing is that after day one the magsafe started to emit a low pitched electrical whistling noise. It tends to be there a few minutes after booting into the OS and then it turns down to almost unhearable, but I experienced it returning after a few hours of use and then disappearing again. If I move close to the escape key I can hear a crackling noise emitting from the magsafe.I'm not trying to be overly nitpicky or anything but I read somewhere that if it's doing that it would be a faulty Mag-Safe board or something.
Does any one you guys know anything about this? I have the 14 days to return it as I bought it online from the Apple Store so if it's a faulty part that might die/break/ cause problems later I might have to.
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Oct 1, 2009
Sometimes I lift and carefully move my 17-inch MBP a short distance to another flat surface without putting it to sleep mode, it starts making really loud mechanical noise when I put it down, so loud that people in the same room can hear the noise and I can feel vibrations too! What causes this? Where does this noise come from? Is my MBP defective?
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Dec 26, 2010
My first generation unibody Macbook hasn't had any problems to this date but now it's constantly making that mechanical loading-like noise which is usually heard when the Macbook is switched on (the noise before the start up sound) or when the lid is opened to wake up the computer. Is there a fix to this?
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Jun 6, 2009
On my 13" MacBook Pro, the hinge makes a cracking noise on the right side of the computer (near the power button) when the screen is positioned all the way back.The entire hinge also makes a loud popping noise when I adjust the screen position. The screen seems very tight, and it takes a little bit of effort to move the screen, and when the screen is moved it makes the loud popping noise.
This is probably going to make some of you guys cringe, but sometimes putting pressure down on the top of the case close to where the black hinge meets to unibody enclosure seems to stop the popping noises. Putting downwards pressure on the hinge, or flipping the computer over and putting pressure on it that way, also seems to alter how much popping noise there is.
If I mess around a bit with applying pressure on different parts of the computer around the hinge, I can usually eliminate the noise. But, the cracking noise when I put the screen all the way back is still there.Any ideas what to do? It's not interfering with the operation of the computer, it's just incredibly annoying and this is only a four month old machine which shouldn't be creaking and cracking already.
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