IMac :: When 27" In Sleep Mode Or Turned Off/slight Crackling Electrical Noise?
May 4, 2010
When the computer is sleeping or if I turn it off but the plug remains in the electrical socket, when I get very close to the machine I hear a slight crackling noise, as if the internal adaptor is making a slight noise. I don't hear it from any normal distance, and other than the buzzing phenomenon when brightness is below 50%, no other symptom. Is this normal for this model. I believe that the external adaptor for the 30" ACD made a louder but similar noise as well unless unpluged.
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.
..by the power unit at the back of the machine - where the power cord goes in.
I happened to be switching out displays at the back of my MP today. Could hear the fan at the lower back portion of the machine (as normal). but this time could also hear a very slight electrical hum just by the power unit -- is this normal (the hum) does yours have this hum?
I never heard it before. guess my head was never that close to it when the MP was on the floor. but since i moved it to the top of the desk my head is closer to it when I switch out the DVI ports
Trying not to be obsessive. I'll run before the white coats turn up by the front door
When the Macbook Pro is charging, I can feel a little electricity in my fingertips. Unfotunately, I don't have a three prong outlet, just two. Either way, I think this was not supposed to be.
Info: MacBook Pro, Mac OS X (10.7.4), Aluminum Unibody 2009
I recently notice that whenever i close my macbook the fan would kick in while in sleep mode. in addition because of the usage of the fan while in sleep mode my battery consumption diminishes very quickly. also after i open it up the macbook is frozen (the screen does not come on and i must restart manually). ive had my macbook for about 2 year and have gone through about 240 battery cycles.
I have a Apple MacBook "Core 2 Duo" 2.2 13" (White-SR) Specs (MB062LL/B)
Last night I was putting my macbook to sleep while I was ni the other room, and came back only to hear the fan or hard drive going 100 miles per hour it seemed, so I opened it to see if anything was active and nothing was it was just making a ton of noise. Any one know what it coulda of been? No software update was taking place?
Just got it today. When I sleep it, a quiet but audible noise kicks off that increases and decreases in intensity with the light on the front of the unit gets brighter and dimmer (so sort of sinusoidal). I've tried restarting it and resetting the SMC. The unit got upgraded to 4Gb ram and a 7200 320gb hard drive today. But I don't believe it's the hard drive - that makes a very low key monotonous whine that stops when I sleep the unit.
The power socket at the back of the mac pro makes a kind of buzzing noise. Only for a short amount of time though. I have have never heard this before as it isnt that loud at all, and only cam across it by chance. I kind of figured out that it might be the electrical current.
I just merged three 9min clips together and for some reason when playing, the entire video has this crackling noise. Does anyone know how to get rid of it and NO, it is not the video itself.
Is anyone experiencing a very slight clicking noise coming from their new 24 in LED? I just noticed a very slight clicking noise. I've had the monitor for 3 months now and just started to notice it today. I am running XP at the moment.
My Macbook Pro 15" [2 GHz Intel Core Duo, OS X 10.5.7, 1 GB 667 MHz DDR2 SDRAM] makes a loud crackling, chainsaw-like noise from the upper left part of the keyboard. I think it maybe the fan but I'm not sure. I've attached an audio clip of the noise:
20091009 175820.m4a - 3.78MB OR (in case the first one doesn't work)
My macbook pro just started making a crackling noise from the hard drive when waking up. What does this mean? It happens every time now, including when starting up the machine.
My mac book pro is making a strange crackling noise, coming from the right side, at first it was occasional now it's constant. It doesn't matter if the volumes on or off.
I just bought a refurbished Macbook Pro and after less than a week, I've just started detecting a sort of soft clicking noise when my palms make soft contact with the area near the trackpad. It's not the trackpad clicking, which is a distinct noise.
Info: MacBook Pro (Retina, Mid 2012), OS X Mavericks (10.9.3)
I used to have a wireless Logitech mouse that drained batteries if you didn't turn it off manually every time you finished using it. So I'm wondering about the Magic Mouse...
1. Does the Magic Mouse automatically shut off when the iMac goes to sleep or is turned off? 2. If I leave the Magic Mouse on (while the computer is off) will it drain the batteries? 3. What do you recommend is best for the batteries and mouse? Should I turn it off every time I go out for the day?
I'm having a problem with my PowerBook G4 where is goes into sleep mode at random times. Mostly when I am streaming video..or at times the fan comes on, it sounds super high then boom. sleep mode again. After hitting the space bar, it comes back on, but it'll happen again shortly after. I've played with the sleep settings
As of last night, my MBP started acting very strangely. After entering my username and password, it would enter the desktop for a short period of time and then kick back into sleep mode; the screen would turn back to black. Sometimes it will let me stay on the desktop for a long time and other times it will hardly let me stay on the desktop. I called apple support and they had me start the computer in safe mode; even then it occasionally kicks me out.
The tech guy said that it was a "strange software issue" and not a hardware issue. I thought it was a hard drive issue; my hard drive makes an odd sound when it unlocks (a grinding sound), but it has been doing that for quite some time with no issues. I tried to reset the SMC and it didn't do anything.
How should I remedy this problem? Is this a hard drive issue? Hard drive failure? Has the grinding sound finally caught up with me? I am running OS X; not leopard or snow leopard. I know I need to upgrade, but this shouldn't be happening.
when I was browsing the BBC website . I happened upon the front page and could hear a crackling sound, eventually after looking round the room for about 5 minutes I realized it was the macbook.
When the news page 'scroller' at the top types its news story out in a tika tape kinda way that is when the crackling noise happens .
does this make sense ? is my macbook faulty ? ..does it take soo much power to perform this function as to make my macbookCPU crackle ?
the noise is coming from approx the center of the notebook and is quiet(ish) but audible enough
anyone have any ideas ?
link to the site is below , you'll see the words scrolling across the screen at the top which then creates a clickable link to a news story : URL
I have seen several threads on the Internet but never an answer to the noise problem Imacs seem to have when in sleep mode. We have an Imac, 27' 10.6.5 2TB bought this summer, in the bedroom which we use as a TV. When we go to sleep we put the Imac to sleep as well with the remote and the ZZZ on the screen. During the night however the Imac fan or harddisk starts to spin as if the whole thing is going to startup but then it winds down again and it does this every hour or so. It is so loud that it wakes us up. Some nights it does it some nights it doesn't. Before we actually had the screen come on too but now it doesn't do that anymore.
Yesterday had sound and no today nothing. Not on Logic, except midi keyboard, no audio in Quicktime, no audio on the internet, and no audio in iTunes. Computer went into a slight sleep. This no longer exists to delete it: /Lib
rary/Preferences/com.apple.soundpref.plist and I deleted /Library/Preferences/Audio/com.apple.audio.DeviceSettings.plist/Library/Preferences/Audio/com.apple.audio.SystemSettings.plist
and I PRAMed Restarting and still nothing!
Info: Mac Pro, OS X Mavericks (10.9.1), Logic 9 and Logic Pro X
My parents just bought a new Imac (3.4 Ghz/I7) which is running 10.6.8. and we cannot figure out why it won't go to sleep automatically. In System Preferences/Engergy Saver we have set both the "computer sleep" and "display sleep" to about 5 minutes, but no matter what we do it keeps showig the screen saver and never goes to sleep. The "put hd to sleep" is checked, and the start screen saver is set to roughly the same amount... I have tried adjusting these settings, to no avail.
My iMac keeps going into sleep mode (at least that what it looks like) for no apparent reason.
By "sleep mode" I mean the screen goes black, the sleep light fades on and off, as if it were in sleep mode, and the fan shuts off. When I press enter, it turns back on and the fan turns on very hight and loud.
I installed two SSD drives into my 27" i7, one in the SSD location and one replacing the optical drive. So I have two SSD's (128GB + 256GB) and the stock WD 1TB drive.
My issue is once I put the machine in sleep mode, the iMac is ejecting the SSD's. If I boot off of the hard drive and then put it in sleep mode, I will drop both SSD's. If I boot off of one of the SSD's and put it in sleep mode, the SSD that was used for booting will not be ejected, but the other one will.
Anyone else running multiple SSD's (not in raid) and is having the same issue? I am beginning to think that I will have to live with just one SSD as the boot drive (which is not the end of the world). Or, cough up an extra $540 (not likely) for another 256GB SSD and raid 0 two of them as boot drives.
My iMac G5 (rev A) shuts down immediately after i put it to sleep mode after just starting up the computer. The longer the computer has been on before I put it to sleep, the longer it takes for the computer to shut down while in sleep mode. I already did the hardware test and it said there were no problems.
I'm downloading a long patch for World of Warcraft, and I want my iMac to stop burning up so much Heat! Can I 'half' turn it off or something - so that it keeps downloading but relaxes and cools down?
