MacBook Pro speaker scratchy and warbley sounding

My MacBook Pro speaker has gotten all scratchy and warbley sounding. Have they "blown"? Is this covered in my 1-yr warranty? How is it likely to be resolved?

If it is hardware defect it is covered under 1 year warranty.
If you wish to do some troubleshooting, do the following steps.
1. Reset PRAM. Some sound settings are stored in PRAM.
   http://docs.info.apple.com/article.html?path=Mac/10.7/en/mh26871.html
2. Reset SMC.
     Choose the method for: "Portable computer that have a battery you should not remove on your own"
    http://support.apple.com/kb/HT3964
If these steps do not help, MBP should be taken in for service
Best.

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You can install Temperature Monitor and have a look if the CPU oder GPU oder something else went to hot. The processor has a built in safety mechanism to shut down the computer before taking damage.

My macbook pro It has remained without sound and the connector has a red light

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    Plug in and remove the headphone.
    If you see red light in the headphone port, plug the headphone
    in and out of the port 5 or 6 times to flip the microswitch inside.
    Sound output may be stuck in the digital mode.
Best.

My MacBook Pro has no audio. Sounds preferences showing output is Optical digital-out port. How do I change this to built-in speakers?

My MacBook Pro has no audio. Sounds preferences showing output is Optical digital-out port. How do I change this to built-in speakers?

I experienced this same problem yesterday on my MacBook Pro, still searching for a solution, several other posts here indicate people have been experiencing this since at lease 2007. I have yet to find a clear solution.
It appears that occasionally inserting headphone causes this, it turns on the Optical digital-out port feature (red light glows inside the headphone port) and takes away the internal speakers option. Restarting did not restore it, but for some reason after sitting asleep overnight the sound started working again and the internal speaker option return in the Sound - Output Window, and the Optical Digital-out option went away.
Here is another post with some ideas on this
https://discussions.apple.com/message/4160477#4160477

My new macbook pro has little to no sound on all video's. I've changed all the settings but it's still no loud. is there something i've missed trying?

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Turn off Find My iPhone in iCloud on the iDevice.
Log out of iMessage, Facetime, remove Apple ID from iTunes & App Store.
Use Settings > Reset > Erase All Content and Settings.
Then set it up as a new iPhone with your own Apple ID.

Design Limitation On ALL Santa Rosa MacBook Pros, 2.2 and 2.4 GHz

While searching the Internet for answers to my new $2500.00 MBP headphone (output jack) has audible hissing sounds I found several posts on Macrumors.com and macintouch.com to explain the design Limitation/Problem. To summarize:
The Problem
The issue has three components, as described in this MacinTouch Report:
- A low hiss that is constant whenever the audio circuitry is on
- Static that occurs whenever anything is playing... even something quiet.
- A series of high-pitched noises that occur somewhat randomly. The best comparison I've seen is that it's like listening to those hearing tests where you raise your hand when you hear a tone.
The problem only occurs with low-impedance headphones (more on this below).
Some Facts
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- Only Santa Rosa MacBook Pros seem to be affected by this particular static problem. I've seen some reports of other machines having audio issues, but they are always different.
- The 'Audio Update 2007-001' that Apple released about two weeks ago doesn't fix it. It does fix a popping problem on all Intel Macs (including the SR MBPs), so it's worth installing, but that is a different problem than this one.
- It does seem to be an Apple-specific problem; I've been unable to find any other reports of non-Apple Santa Rosa notebooks having the same problem.
Just wondering if anyone else has had this issue with their new MBP?
Thanks,
B

I experience the issue as well both in OS X and when I'm in Windows Vista.
Whenever a program uses audio, there is an annoying high-pitched hissing noise from the built-in speakers.
Of course the severity of the problem depends on the individual hearing ability, but everyone I have asked, have been able to hear the noise.
Apple is known to be the first choice of audio professionals; however this problem is below that standard.

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uhm hey guys,
idk where else to get help so ima try here,
i got windows 8 installed with bootcamp on my macbook pro late 2010 (5, 5) and theres no sound coming out of it, so i installed an nvidia audio driver (idk, it could be the incorrect one) but i have nvidia GeForce 320 on my macbook.
do you know what i should install ?
but when i go onto my osx the sound is fine, so i figured im missing something on windows 8
Orrrr could i just go out and get parallels and hope it doesn't get the same problems?

Have a problem with my MacBook Pro.5,3 and monitor. Intermittently, the desk top screen becomes broken up into vertical sections, which appear in the wrong order, creating a haphazard picture. The Apple icon, usually at top left corner, appears in to

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The Apple icon, usually at top left corner, appears in top right corner in a strip including all that left hand. When the computer is restarted, the screen goes back to normal. But I have to move the mouse to the far left of the screen and then up until it reappears on the far right hand side of the screen so that I can hit shut down button.
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That sounds like a Hardware problem.
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My Macbook Pro (13-2010) cannot play sound without a headphone

Hi all,
I tried my best to solve this problem but cannot make it. Could anyone shed some light on it?
My Macbook Pro (13-2010) can play sound well with a headphone, everything is OK. But when I unplug the headphone, it cannot play sound. The keys on the keyboard cannot adjust the sound. A sound adjustment sigh will appear on the screen, with a stop sign at the bottem of the full volumn bar. The volumn bar does not change when I tried to change it by function keys.
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hmm... I got it worked by plugging in the headphones and unplugging many times...
I hope it helps if you have the same problem.

User Contributed Tips, MacBook Pro (Original) Power and Batteries, MB Pro

*The following User Contributed Tips are located in the MacBook Pro (Original) > Power and Batteries on a MacBook Pro forum:*
None at this time.
*The following related tips are located in other areas of Apple Discussions:*
neuroanatomist - Apple notebook batteries – maintenance and troubleshooting
http://discussions.apple.com/thread.jspa?threadID=1764220
Publish date: Oct 23, 2008
See Also User Tips Library

Frani wrote:
Hi Martin, thanks for your response, I'll have a good read through that article. Just to fire some more facts at you:
My superdrive has been playing up intermittently for a while. Sometime it wont read the content on CDs / DVDs - usually copied / PC & Mac written discs, not commercial ones. However I haven't been trying to read and discs when the problems have happened.
I upgraded my hard drive from a 320Gb to a 500Gb disc about 6 months ago and the switch was done by a competent Apple Authorized Service Provider. For a few weeks after the new drive had been installed there were a few occasions where the disc was making some noise, like a clicking noise. This would start and go on for a minute or so then seem to dye down and stop. It happened a total of about 10-15 times but when I reported this to the person that fitted my new hard drive he assured me he felt it was unlikely to cause a problem. he did say that if it went on to be an issue they would replace the drive of course. Like I said this was all done about 6 months ago and the clicking noises only happened a handful of times in the first month or so after the install and it did have one bad crash in this time but since then it has been fine.
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Thanks
Frani,
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ted39 wrote:
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How do I use my serial number to find information about my MacBook Pro's Processor and RAM?

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(117541)

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MacBook Pro speaker scratchy and warbley sounding

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