Why is there a loud hissing noise?

From time to time there is a loud hissing noise coming from the iMac speakers.  Sometimes it is very brief, other times it lasts for 15 seconds or so.  Anyone know what's causing this on a late 2013 iMac with SSD and rotating hard drive.  Thanks.

What you describe is probably hardware.
However, you might try resetting the SMC.

Similar Messages

  • Ichat loud hissing noise

    I was chatting this evening on a latest version MacBook with another user who has the same setup. I was in Barrie and the other person in Toronto. Both of us were complaining about a terrible hissing sound during the chat. I have never had a problem with a sound like this when playing music or watching a clip from the net on the MacBook. Any suggestions why this loud screeching hissing noise exists and how to get rid of it?

    I'm experiencing the exact same problem (though I'm not hearing a hissing, more like, as my brother-in-law described it, the sound of someone breaking wine glasses continually). I tried the iChat for this first time this evening with my brother-in-law, sister and their daughter, and we were getting a pretty horrible feedback noise. While it may work as a solution, using external speakers and/or microphones would seem to be counter to the whole idea of using a laptop. It shouldn't be necessary to lug such things around with you just to get good sound quality in the iChat. Headphones (another possible solution I read about) are impractical if you're having a conversation with more than one person at the other end.
    I'll check out the "Volume" settings in System Preferences and see if that helps things, however.
    Now, the video was great!

  • Added Ram to Mac Mini & Now There is Loud Fan Noise

    Hi everyone,
    Today I bought a Mac Mini Core Solo. I brought it home and opened it to add an additional 1gig of ram. I now have 1 stick with 1GIG and 1 stick with 256mb of ram inside of it. After adding the additional ram I closed the case and turned the power on. It picked up the new ram but it is now making a really loud fan noise. I'm nervous that something has gone awry. Any suggestions for as to what is wrong? Did i do a big bad?
    I'd appreciate any advice!

    Sounds like a connector to the fan was pulled loose when you dismantaled the mini to get at the memory slots.
    See the pictures here...
    http://www.applefritter.com/MacMini_Take_ApartGuide
    Open her up and check that the wires from the fan a re seated onto the motherboard correctly.

  • Why is there a strange diagonal "noise" appearing on my footage ?

    hi
    i've made a rough cut of a piece i am working on and discovered a strange diagonal noise effect on the footage. its very faint but noticable. it appears mostly on "flat" or "even" areas like sky or waters.
    here are the details of the project-
    shot on DV with panasonic DVX100 at 25 P 4:3 (i use pal system)
    captured with sony DSR-11 set to DV PAL (default)
    edited in a DV PAL sequence (default - 25 lower field).
    streatched to 16X9 (nested on a 16X9 sequence and changed aspect ration to 1). turned into black and white using a monochrome filter (cant remember the name...)
    exported with compressor CBR 7.4 bits, Proggressive, anamorphic, motion-best. Automatic.
    built on DVD SP 3, 16X9
    burned on toast 7.
    is there something wrong with my workflow ?
    can you think of a reason for those strange faint diagonals pulsing ? any suggestion ? maybe its my Tv (although i've never experience that before)?
    i appriciate your replies and enjoy learing from you fellas...
    thanx
    nir evron
    G5 dual 2.3 hitachi 500G HD, lacie 250G FW HD   Mac OS X (10.4.2)   fcp 5, dvdsp 3

    My guess is that the noise showing up in the stretching and then is magnified in the monochrome step.
    To check if my hunch is right, take your original 4:3 footage and run it through the Monochrome filter and then export a 10 second bit of the most offensive noise. If it doesn't go away there, then it is porbably the Filter that is creating the noise. Try a different method of making it black and white.
    If it does go away, then the problem was brought in by the Stretching. To fix it, rather than stretching your footage, crop it instead. Either use a 16:9 Matt in your 4:3 space, or pull the 4:3 into the 16:9 and just enlarge it until it fits your space (you will loose a little off the top and bottom).
    Hope that helps!
    ~Luke

  • No sound through speakers, and LOUD hissing through headphones - Inspiron 3537

    Hi,
    So yesterday the sound on my laptop's internal speakers stopped working, and when I plug the headphones in there is a loud hissing noise - way too loud to be able to stand when trying to listen to something, though I can hear the audio as well.  The volume of the hissing is not affected by the volume control on the laptop but the actual audio can be made louder.  Have also tried running the audio test in the EPSA diagnostic, and I cannot hear anything.  Anyone have any ideas?
    I have a Dell Inspiron I5, model 3537.  Have had it less than 18 months so if it is a hardware failure I am extremely disappointed in the manufacturing quality.  Had my previous Philips laptop for six years and never had a problem like this!

    MikeT_1983
    Have also tried running the audio test in the EPSA diagnostic, and I cannot hear anything.
    Hello. Failure to hear tones through the speakers during the ePSA audio quick test means that the speakers have either become disconnected or failed. I don't know if you would want to take the laptop apart to check the connection, but if so there is a manual available with complete disassembly instructions.
    Harder to account for the loud hissing. If you currently have the Realtek audio driver installed, switch over to the Windows native driver and see if it makes a difference.
    1. Open the Device Manager (type devmgmt.msc in the Windows search box).
    2. Expand the "Sound, video & game controllers" and right click on "Realtek High Definition Audio".
    3. Select to "Update Driver Software".
    4. Click on "Browse my computer for driver software".
    5. Click "Let me pick from a list of drivers on my computer".
    6. Put a check in the box "Show compatible hardware" if not already checked.
    7. In the list of devices, click "High Definition Audio Device" (the native driver).
    8. Click "Next".
    9. On the Update Driver Warning box, click "Yes" (install the driver).
    10. Restart the laptop if prompted. If not prompted, then no need to restart.
    [To get back to the Realtek driver,  do it again but reverse the names in steps 2 and 7.]

  • NEC3540 hissing noise

    I replaced my combo drive with an NEC 3540 on my PowerMac G5 Dual 2.3GHz several months ago and I noticed from day one that whenever the drive spins it makes a (noticeably) loud hissing noise.
    I'd like to know if there's some firmware fix (or any other kind of fix) that can resolve this issue. It becomes really annoying while watching movies or listening to music on the Mac.
    Thanks in advance for your time!
    Power Mac G5 dual 2.3GHz   Mac OS X (10.4.6)   1.5GB RAM

    Hi
    NECFlash will allow you to update your firmware, if it's not the most current. The new 16X drives spin up faster than older drives, so it will likely still be louder than your old drive.
    I have the ND-3550A, and it's not quiet, but it's still quieter than the DVR-109 that came with my G5, which drowned out the audio of most movies if the volume was not cranked...

  • Hissing noise on aux port

    Is anyone having any issues with a loud hissing noise when listening to music in the car using the aux port and a 3.5mm jack cable. I have an iphone 4 and there is no problem but when i plug in my iphone4s i can barely hear the music unless both radio and phone are at full volume.

    I have exactly the same problem. 
    I have an ipod touch = it works fine.
    I had an ipod classic = it worked fine.
    (I have even tried a dreaded android phone from samsung) = worked fine.
    Now I have also tried two different iphone 4s = loud hissing.
    I have also tried a latest generation ipod nano = hissing.
    So I bought new cables for the car. An expensive shielded one.. = no change (lots of hissing)
    The only other alternative suggestion I've found in the web is a aux-style jack connector to the iphone interface, which appears to work for most folks but then it won't be possible to charge my iphone and listen to music at the same time.
    Arghhh!

  • Odd hissing noise when inserting PCMCIA card

    I'm testing a wireless broadband card (Sierra AC580), and I've encountered a very strange issue. When I insert the PCMCIA card into its slot, I get a loud hissing noise from the left speaker. I can reduce the volume of the noise by moving the card side to side, and sometimes I can transfer it from the left to the right speaker.
    Is this some kind of interference issue between the speakers and the cell signal coming from the card? Has anyone else encountered this? The speaker volume has no effect on the volume of the sound. Neither does the mute button (F3).

    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.
    I know of two other MBP users and they have the same thing... as said on other posts "not very pleasing to the ear"...

  • My Macbook Pro is 3 months old and recently it has been making quite a loud fan noise whenever i play music/video or even turning up the volume. I haven't been playing music/ video for ages. Is there any solution?

    My Macbook Pro is 3 months old and recently it has been making quite a loud fan noise whenever i play music/video or even turning up the volume. I haven't been playing music/ video for ages. Is there any solution?

    Try resetting the SMC  http://support.apple.com/kb/HT3964

  • Why is there a clicking noise in my ipod and the error message keeps coming up

    why is there a clicking noise in my ipod and the error message keeps coming up i tryed reseting it and it wont do anything

    Video conversion - Handbrake
    Video Conversion – Video Converter
    Video Conversion – Video Converter Ultimate
    Video Conversion – Video Mate

  • Why does my MacBook Pro suddenly turn really really slow and make a really loud fan noise?

    Whenever I turn on my MacBook is runs perfectly fine for 2 minutes but then it turns really slow (to the point that it takes ages to move the mouse cursor and to type) and make a really loud fan noise. What should I do to fix this?

    Welcome to Apple Support Communities
    There's a process that is taking up the RAM and CPU. Open Activity Monitor (in /Applications/Utilities), and select "All Processes" above "Show" in the toolbar. Then, order processes by CPU, and tell me which processes you see that are consuming more CPU

  • Hissing noise sound while recording - why?

    It only happens when i press record. a hissing / noise sound comes and goes for about two seconds and it happens about every three minutes. it's not only audible during recording but it's also there in the recording on playback. does anyone know what this is?
    thanks!
    bobby

    Recording what ?
    It could be fan noise, it could be any number of things.

  • Why does the MacBook Pro make a loud heat noise?

    So, when I was playing a game called "Modern Combat Domination" my MacBook Pro make a very loud heat noise? Does that mean I should stop playing the game? I worried. Thank You.

    That means your fan(s) sped up to dispose of the excess heat generated by playing the game. It's a sign that your machine is taking care of itself properly.

  • Why are there faint static noises coming out of the speaker of my iPod touch

    There are faint static noises coming out of the speaker of my iPod touch fifth generation

    I Just got home and noticed it. It's coming out of the iPods speaker, Not headphones.
    For a few moments it was making popping noises. I shut it down and the static is still going. No sounds are playing.

  • Why is my imac (mid2011) doing a loud fan noise?

    I had my imac since 2011 and never had a problem with it, until 1 month ago. It started to make a loud fan noise. I already reset the SMC, (http://support.apple.com/kb/HT3964) but I keep hearing it. Also checked in disc utility and everything is fine (not a disc problem).

    I run Apple Hardware Test and gave me this:
    4SNS/1/C0000008: TL0p-- 124
    (during the test the imac went silent for a couple of seconds)

Maybe you are looking for