2017 MacBook Pro speakers buzzing — Apple tech left me skeptical

My MacBook Pro recently had a battery replacement. I noticed audio from the internal speakers now has a buzzing sound. I made an appointment for the Apple Genius to have a look. They did some tests, heard the buzzing, and then went out back with it to inspect the hardware. Hardware apparently looked fine according to the tech. Then, they put it in safe mode and claimed because the speakers weren’t making sound in safe mode it must be a software problem. I get home and start researching and apparently safe mode doesn’t play audio.


They wanted to wipe my machine and do a fresh install, which I declined. Instead I set a phone appointment to give myself time to back everything up before trying a fresh install of the OS.


I have a really hard time understanding how the tech claimed the fact it didn’t play audio in safe mode as evidence it must be a software issue. They said it could be rooted in any program or document stored on the machine and other than deleting items to figure which one it is, that my best option would be to reinstall the OS. I’m really disappointed right now because the fact it didn’t play audio in safe mode is standard— shouldn’t they know better?


Does anyone out there have any experience with this? Or is even thoughts on the lack of sound in safe mode having significance? The Apple Genius team seemed very confident about their conclusion it must be a software issue because the sound didn’t play in safe mode. From what I’m reading online that lack of sound is a feature within safe mode.

Posted on Jul 15, 2025 6:10 PM

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14 replies

Jul 16, 2025 8:19 AM in response to J_Dubbs

J_Dubbs wrote:

Then, they put it in safe mode and claimed because the speakers weren’t making sound in safe mode it must be a software problem. I get home and start researching and apparently safe mode doesn’t play audio.

I just tried this. I can verify that audio does not play on a 2014 MacBook Pro nor on a 2017 MacBook Pro while booted in safe mode. Sounds does work on a 2023 MacBook Air in Safe Mode, but the sound controls in System Settings are mostly disabled.


However, the 2017 model simply wasn't very robust. That's the one with the butterfly keyboard. The right side of the speakers on mine are blown out and sound bad. So it's possible that they are simply worn out.


I’m really disappointed right now because the fact it didn’t play audio in safe mode is standard— shouldn’t they know better?

Nobody here knew that. I sure wouldn't expect someone in a retail store to know more. I just got lucky because I have a couple of older machines handy to check.


Does anyone out there have any experience with this? Or is even thoughts on the lack of sound in safe mode having significance? The Apple Genius team seemed very confident about their conclusion it must be a software issue because the sound didn’t play in safe mode. From what I’m reading online that lack of sound is a feature within safe mode.

You're correct. But are you absolutely certain that it wasn't doing this before? Can you try to move the balance left and right to see if that makes a difference? That's what I did on mine. Now it's mono, but at least it isn't painful to hear.


If it were making this noise all the time, then it would be a software problem. But if it's just a case of poor sound quality, then I would chalk that up to this model's overall poor build quality. Not Apple's finest work that one.

Jul 16, 2025 2:58 PM in response to J_Dubbs

J_Dubbs wrote:

I got home and spent significant time reading up on it — learning audio doesn’t work in Safe Mode took only minutes to find many sources confirming the same.

Now you say otherwise and sound confident, but can you prove it? Why would so many people lie about this? Should I disregard everything I’ve read — respectfully your response is lacking the detail you need for me to rely on it.

I did not know this either until @etresoft confirmed it. While I trust @etresoft, I just had to see it for myself since I had not noticed it while booting into Safe Mode previously....of course I was not looking either. I'm wondering if it has been forever, or if this is just a recent development. I guess it should not surprise me since I have encountered the built-in camera not working in Safe Mode, but on other systems.


My MacBook Pro recently had a battery replacement.

I'm assuming this was an official Apple repair? Is your laptop one with a Touchbar or without?


The models with the Touchbar would also have had their internal Speakers replaced since the Speakers are glued to the underside of the Palmrest along with the Battery and Touchbar and Keyboard since Apple replaces the entire Top Case/Keyboard/Palmrest Assembly when replacing any of those items. So it is possible those new speakers are just bad from the factory or were damaged while assembling the Top Case Assembly at the factory.


If you have the non-touchbar model, then those speakers are replaceable. It is possible a tech did not properly reinsert the rubber mounts for the speaker, or the speaker got something stuck on the speaker cone, or perhaps the speaker was accidentally damaged during the repair.


Run the Apple Diagnostics. I believe it includes an audio test which plays some tones just before the diagnostic completes. Apple should have run their MRI service diagnostic and even their Audio service diagnostic to confirm the audio hardware was functional.


I have a really hard time understanding how the tech claimed the fact it didn’t play audio in safe mode as evidence it must be a software issue.

That statement makes no sense. If something doesn't work in Safe Mode, then it usually means there is some sort of hardware issue (or in this case no audio driver being loaded). If something works in Safe Mode it clearly indicate the issue is software related or setting/configuration related. Since this tech never bothered to run a service diagnostic to confirm the hardware audio is Ok, it seems like this tech may be just trying to clear you out of the store.


If you have 80GB+ of Free storage space, then you can create a new APFS volume alongside your current macOS installation and install macOS onto that new APFS volume so you can test a "clean install" of macOS (good enough for what you need to test since it will eliminate any possible software issues with your current installation). Ignore the listed "Available" storage space value since it is not synonymous with Free in the context of macOS storage. The best place to view the actual Free storage space value is in Disk Utility.


FYI, you have a 90 day part/repair warranty (depends on how the device was repaired) so make sure you get this taken care of within those 90 days.

Jul 15, 2025 10:27 PM in response to iTest_NZ

I spent a few hours going through a lot of “solutions” online. Many people have this problem and there’s no clear reliable fix. It does seem like some type of software issue may be causing it, however, it also doesn’t sound like OS install or Time Machine restore will do the trick. Headphones it is I guess, really disappointing and I feel like the support team gave me flawed info. Headphone jack is fine, and playing via Thunderbolt connection on my Ultrafine LG speakers sounds fine — the issue is exclusive to the internal speakers. I ran through some attempted fixes involving deleting preference files and another with NVRAM reset; none worked. I noticed changing the sound HZ format might have slightly improved it, but didn’t solve it. If you run a search you will find many reports of buzzy sounding speakers and it seems like an endless pit of aggravation and confusion.

Jul 16, 2025 6:09 AM in response to John Galt

John Galt wrote:
“That is not true, so please disregard that research.”


Not to sound like I’m being a punk here — but how can you prove it’s not true? There’s probably tens or hundreds of posts online where everyone says sound doesn’t play in Safe Mode. My speakers didn’t make noise in Safe Mode. I got home and spent significant time reading up on it — learning audio doesn’t work in Safe Mode took only minutes to find many sources confirming the same.


Now you say otherwise and sound confident, but can you prove it? Why would so many people lie about this? Should I disregard everything I’ve read — respectfully your response is lacking the detail you need for me to rely on it.

Jul 16, 2025 8:32 AM in response to etresoft

etresoft wrote:


J_Dubbs wrote:

Then, they put it in safe mode and claimed because the speakers weren’t making sound in safe mode it must be a software problem. I get home and start researching and apparently safe mode doesn’t play audio.
I just tried this. I can verify that audio does not play on a 2014 MacBook Pro nor on a 2017 MacBook Pro while booted in safe mode. Sounds does work on a 2023 MacBook Air in Safe Mode, but the sound controls in System Settings are mostly disabled.

However, the 2017 model simply wasn't very robust. That's the one with the butterfly keyboard. The right side of the speakers on mine are blown out and sound bad. So it's possible that they are simply worn out.

I’m really disappointed right now because the fact it didn’t play audio in safe mode is standard— shouldn’t they know better?
Nobody here knew that. I sure wouldn't expect someone in a retail store to know more. I just got lucky because I have a couple of older machines handy to check.

Does anyone out there have any experience with this? Or is even thoughts on the lack of sound in safe mode having significance? The Apple Genius team seemed very confident about their conclusion it must be a software issue because the sound didn’t play in safe mode. From what I’m reading online that lack of sound is a feature within safe mode.
You're correct. But are you absolutely certain that it wasn't doing this before? Can you try to move the balance left and right to see if that makes a difference? That's what I did on mine. Now it's mono, but at least it isn't painful to hear.

If it were making this noise all the time, then it would be a software problem. But if it's just a case of poor sound quality, then I would chalk that up to this model's overall poor build quality. Not Apple's finest work that one.

I don’t use the speakers often — basically discovered this by accident on a Zoom call while my headphones weren’t pairing. Any time prior to recently, I thought the speakers sounded great, however, I can’t confidently say if that was a year ago or 3 months ago.


I know correlation isn’t causation — but my OS was way out of date until recently. I updated the OS before having the battery replaced. Online I’ve found other cases where people had their battery replaced and then complained on buzzy sound, and people blaming a bug in the software.


I think part of my problem here is I always have viewed the Apple Genius team as knowledgeable and thorough, so to have the illusion crumble on the claim “because there’s no sound in Safe Mode, this means it must be a software issue.” And they also acted like it could be a document or any file — I dunno, to me, that answer was lacking depth and I feel like it’s wrong of them to shove me into reformatting the machine. Knowing the age of the machine and my use behavior, I think I’ll just live with it. Bummed out about it, but I’ve got headphones on nearly all the time with it.


There’s this side of accountability where I would really want Apple to acknowledge the bad advice and make this right — I really just want a proper assessment and I don’t feel like I got that.



edit: the thing that makes me think this is not a software issue is the speakers in my LG Ultrafine sound great through the Thunderbolt cable, and wired headphones sound fine too. If this were a software or driver issue, I would expect the problem to cascade into other wired audio output.

Jul 16, 2025 9:35 AM in response to IdrisSeabright

IdrisSeabright wrote:


J_Dubbs wrote:
Now you say otherwise and sound confident, but can you prove it? Why would so many people lie about this? Should I disregard everything I’ve read — respectfully your response is lacking the detail you need for me to rely on it.
Try to play some audio.

It’s already been established that audio doesn’t play in Safe Mode — it’s a feature not a bug.

Jul 16, 2025 9:50 AM in response to J_Dubbs

J_Dubbs wrote:


IdrisSeabright wrote:


J_Dubbs wrote:
Now you say otherwise and sound confident, but can you prove it? Why would so many people lie about this? Should I disregard everything I’ve read — respectfully your response is lacking the detail you need for me to rely on it.
Try to play some audio.
It’s already been established that audio doesn’t play in Safe Mode — it’s a feature not a bug.

I responded to you before etrecheck did.

Jul 16, 2025 10:29 AM in response to J_Dubbs

J_Dubbs wrote:

I don’t use the speakers often — basically discovered this by accident on a Zoom call while my headphones weren’t pairing. Any time prior to recently, I thought the speakers sounded great, however, I can’t confidently say if that was a year ago or 3 months ago.

My timeline is similar. I think I noticed the problem about 3 months ago (ish). I use my computer on a weekly zoom call to an out-of-town friend. He frequently has some sort of tech problem on his end, often audio. So I assumed that was the cause. But for some reason, I played some other sound on this computer and heard the same problem. The hard part was later confessing that the audio problem had been on my end and he was blameless.


I know correlation isn’t causation — but my OS was way out of date until recently. I updated the OS before having the battery replaced. Online I’ve found other cases where people had their battery replaced and then complained on buzzy sound, and people blaming a bug in the software.

I think I've had the battery replaced on this computer too, but it was years ago. This computer won't run anything more recent than Ventura. I don't know when the last time I updated was. There have been some Ventura updates, but there's no guarantee I applied them promptly. I usually don't.


I think part of my problem here is I always have viewed the Apple Genius team as knowledgeable and thorough, so to have the illusion crumble on the claim “because there’s no sound in Safe Mode, this means it must be a software issue.”

Such is life. Everyone's human and makes mistakes every now and then. When the topic is random system functionality in an obscure boot mode on a 8 year-old computer, such mistakes are even more likely. I wouldn't say that this error on the part of the Apple Genius team is an egregious one.


And they also acted like it could be a document or any file — I dunno, to me, that answer was lacking depth and I feel like it’s wrong of them to shove me into reformatting the machine.

I'm going to have to agree with them on this point. People will install all kinds of junk on their computers. That junk ware is very heavily advertised and said advertising is extremely effective. It's a little-known fact that the scam ware industry is a very significant part of the entire software industry. If I were working in the Genius Bar and someone came in with some odd problem, I would be shocked if they didn't have multiple different scam apps on their computer.


It's pretty standard procedure to wipe the computer and reinstall the operating system. That's a quick and easy procedure that immediately corrects at least 75% of all problems. Why wouldn't they do that? The sad part is that most users don't know any of this so, if they have a backup, they'll typically just restore the scam ware when they home.

There’s this side of accountability where I would really want Apple to acknowledge the bad advice and make this right — I really just want a proper assessment and I don’t feel like I got that.

You're in the wrong place for that. You would have to contact the management of the store. And this is a really, really obscure detail. You'll have a difficult time finding anyone to even understand what you're talking about. Most people don't have a computer that old to verify it either.


And even then, what's the likelihood that people are going to pay for any repairs to one of these old, wheezing Intel models? On the newer Apple Silicon computers, you really need that red "Safe Boot" indicator in the menu bar. Otherwise you can't tell you're running in Safe Mode. Even the sound works. 😄 But on that 2017, you can totally tell. It just crawls in Safe Mode. It crawls in normal mode too.


You do have a valid point, but it's just not a significant issue. Most importantly, if you were to let this issue deter you from purchasing a new Apple product, or from obtaining support directly from Apple in the future, then you will have only succeed in punishing yourself for someone else's understandable error.


edit: the thing that makes me think this is not a software issue is the speakers in my LG Ultrafine sound great through the Thunderbolt cable, and wired headphones sound fine too. If this were a software or driver issue, I would expect the problem to cascade into other wired audio output.

Not necessarily. The fact that audio doesn't work in Safe Mode proves that software is very much involved. The only way to tell for sure would be to install an older OS version like Monterey or Big Sur and see if the sound is still corrupted. I know I wouldn't bother to do that. But you can try adjusting the balance. Maybe your problem is identical to mine and just one side is blown out.

Jul 16, 2025 3:57 PM in response to HWTech

Thanks for the detailed reply HWTech. It is indeed a Touchbar model, which based on what you’ve said makes me feel more certain it’s probably a hardware issue. I’ve only gone through Apple for anything on this, in fact, I think this was my only repair or service on it ever. Purchased new from Apple, adult owned and never beat on, kept it in great condition.


The tech ran the diagnostics thing and the speakers made noises and the audio sounded crunchy / buzzy. The tech also took it out back to visually inspect for any loose wires or something, and they commented that the internal inspection seemed fine. I don't know if a faulty speaker would look any different than a good one, but it certainly sounds messed up when playing audio.


They are having some tech call me on Friday to do something with the OS but I think I’ll initiate a deeper convo with them about these issues, and maybe I’ll just pick a different Apple Store and try with this new information in hand.


Jul 17, 2025 5:40 AM in response to J_Dubbs

***Update***


Genius bar was presented with the machine again (at a different store) and quickly diagnosed this is a hardware issue. I informed them about the Safe Mode being silent as not applicable to pin it down as a software issue. They confirmed the left speaker has an issue — bad part used when my battery replacement was done. The part is no longer available in the Apple parts network, so they are refunding the cost of the battery replacement work. When I did get the battery replacement I do recall being informed how I was getting one of the last ones remaining or something like that, so the info today tracks.


I am mostly relieved that now I don't need to experiment for endless weeks or months of the software stuff rabbit hole — the team was nice and I'll put those new funds towards a new machine later this year.

2017 MacBook Pro speakers buzzing — Apple tech left me skeptical

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