You are halfway through a Zoom call, a Netflix series, or a crucial Spotify playlist when it happens. Your MacBook speakers start crackling like a broken radio, or worse, go completely silent. No audio. Nothing. Just that uncomfortable quiet that makes you wonder how much this is going to cost.
If you are in Auckland or anywhere across New Zealand, you are not alone. Speaker issues are one of the more common MacBook complaints the team at 73Inc sees come through the door. The good news? A lot of these problems have straightforward solutions. The not-so-good news? Some of them point to hardware faults that need a professional hand.
Here is a plain-English breakdown of what causes MacBook speaker problems, what you can try yourself, and when it is time to stop guessing and get it sorted properly.
Why Are My MacBook Speakers Crackling?
Crackling or distorted sound on a MacBook usually comes down to one of a few culprits.
Software and driver issues are the most common starting point. macOS manages audio through a system called CoreAudio, and when it gets confused or overloaded, you can end up with crackling, popping, or stuttering. This often happens after a macOS update, when an app is hogging audio resources, or when the sample rate settings get out of sync.
Dust and debris can physically interfere with the speaker grilles, especially on older MacBooks or those used in dusty environments. New Zealand homes near the coast or in drier regions like Canterbury and Hawkes Bay can be surprisingly dusty inside, and that dust settles into the speaker mesh over time.
Liquid damage is a big one. Even a small amount of moisture, from a spilled drink, condensation, or high humidity, can corrode the speaker components or the logic board connections that drive them. If your MacBook got wet at some point, that could be exactly what is causing the crackling.
Failing or aging speakers are a reality with older models. MacBook Pro and MacBook Air speakers from 2015 to 2020 have had a known tendency to degrade over time, particularly at higher volumes. The membrane inside the speaker can weaken or tear.
Logic board faults can also affect audio output. The audio chip sits on the logic board, and if there is a component-level failure there, it can knock out sound entirely or cause serious distortion.
Why Have My MacBook Speakers Gone Completely Silent?
Total silence is a different problem and can have a few causes.
One of the most common is a software glitch where macOS thinks headphones are plugged in, even when they are not. The audio output gets redirected to a non-existent device, and you hear nothing. This is surprisingly common, particularly on MacBooks with a 3.5mm headphone jack.
Other causes of silence include a failed speaker unit, a damaged audio flex cable connecting the speaker to the logic board, a blown fuse on the logic board, or a full logic board audio chip failure. These range from moderately affordable to expensive to fix, which is why an accurate diagnosis matters before you commit to anything.
Things You Can Try at Home First
Before you head anywhere, run through these checks. Some of them genuinely fix the problem.
Restart your MacBook. Yes, seriously. CoreAudio hangs sometimes and a clean restart clears it.
Check your output settings. Go to System Settings, then Sound, then Output. Make sure the selected device is actually your MacBook speakers and not Bluetooth headphones or an HDMI display that is no longer connected.
Reset CoreAudio. Open Activity Monitor, search for “coreaudiod”, and force quit it. macOS will restart the audio process automatically. This fixes crackling caused by software glitches more often than you would expect.
Try a different app. If the crackling only happens in one app like Chrome or Zoom, the issue may be with that app’s audio settings rather than the MacBook itself. Try playing audio in another app to check.
Check the headphone jack. Plug in and remove headphones a few times. If the audio was stuck thinking headphones were in, this can sometimes jog it back to normal. On models with a combo jack, you can also try a can of compressed air to clear any debris from the port.
Update macOS. If you are running an older version of macOS, check for updates. Apple occasionally releases patches that fix audio-related bugs.
Reset NVRAM. Shut down your Mac, then turn it on and immediately hold Option + Command + P + R for about 20 seconds. This resets hardware settings, including audio defaults, and can sort out some speaker issues on Intel Macs. On Apple Silicon (M1, M2, M3) Macs, NVRAM resets differently, but the process is similar.
If none of that works, it is time to think about what is actually happening inside the machine.
When the Problem Is Hardware
If the software fixes do not help, the issue is almost certainly physical. Here is what the most common hardware faults look like in practice.
A damaged speaker unit often presents as crackling at mid to high volumes, or as one channel going quiet while the other is fine. It is a component repair, not a full logic board job, and it is much more affordable than people expect when done by a specialist.
A faulty audio flex cable can cause intermittent sound, crackling when you move the screen, or total silence. The cable connects the speaker assembly to the logic board and can fray or disconnect over time.
Liquid damage to the audio circuit might not show up straight away. Sometimes speakers seem fine after a spill, then start crackling weeks later as corrosion sets in. If your MacBook has had any exposure to liquid, that is the first thing a good technician will check.
A logic board audio chip fault is the most serious scenario. It is not always a write-off, though. Board-level repair specialists can diagnose and fix individual chips on the logic board, which is far cheaper than a full board replacement.
Can You Fix MacBook Speakers Yourself?
The short answer is: probably not, and it is worth understanding why before you reach for a screwdriver.
Modern MacBooks are genuinely difficult to open. They use proprietary Pentalobe screws, adhesive-secured components, and tightly routed cables that can tear if you do not know exactly what you are doing. On 2016 models and newer, the speaker assemblies are integrated with other components in ways that make DIY replacement risky. Damage a flex cable or connector during a speaker repair and you can end up with a much bigger problem than crackling audio.
Unlike a loose iPhone screen or a keyboard cleaning, MacBook speaker repairs involve accessing parts that sit very close to the logic board. One wrong move with a pry tool can mean a much more expensive repair down the track.
If you have an older pre-2016 MacBook Pro or a Mac Mini where the design is a bit more forgiving, basic speaker replacement is more achievable. But for anything from 2016 onwards, getting a professional involved is the smarter call.
Getting It Fixed Right in Auckland
73Inc is an Auckland-based Apple repair specialist with over 8 years of experience working specifically on Mac hardware. They handle speaker repairs across all MacBook models, from older unibody MacBook Pros through to the latest M3 models, and they work at the component level rather than just swapping out whole assemblies.
What that means in practice is that they diagnose the actual fault first, whether it is a software issue, a blown speaker, a corroded flex cable, or something on the logic board, and give you a clear price before any work starts. No surprises.
Their approach is diagnostics before parts. If the problem is a software glitch, they will sort it out without charging you for a speaker replacement you did not need. If the speaker itself has failed, they replace exactly what is faulty rather than recommending an entire logic board swap.
73Inc also offers a no-fix, no-fee guarantee and a 90-day warranty on repairs. For Kiwis who have already been quoted steep prices by Apple directly (often north of NZD 1,000 for out-of-warranty audio repairs), the independent route via 73Inc is usually significantly more affordable.
They are based in Grey Lynn, Auckland, and also handle mail-in repairs for customers across New Zealand, including Wellington, Christchurch, Hamilton, Dunedin, and beyond. If you are not in Auckland, you can send your MacBook to them, and they will work through the repair remotely.
Related Read: MacBook Touch Bar Stopped Working
A Quick Summary
If your MacBook speakers are crackling or silent, start with a restart, check your output settings, and reset CoreAudio. If that does not fix it, the issue is likely hardware. Trying to open the machine yourself carries real risk, especially on newer models.
For a proper diagnosis and a transparent repair price, the team at 73Inc in Auckland is the people to call.
Good audio should not be a luxury. Get it sorted.