Other symptoms includes No audio devices found(cant play sound)

Is there any possible reasons for this? I highly doubt is a software problem.

hey guys an update on my issue, i never went for a fix, the problem went away after i left it to rest for a few days, i believe its an overheat issue. my screen has been working fine for the past few months since reporting this. Not sure it will come back, but this is definitely a faulty hardware, and Apple is not admitting it!

Affected model: 2016 Macbook Pro touch bar

I never went for a fix till now and using the same mac, the problem still comes and go, usually happen when overheating/heavy usage. I brought my macbook for de-dusting the fans and apply new heat paste for my processor in hope that it can reduce overheating issues, replacing the whole display costs too much.

Apple did an update for this issue for the FlexGate issue: 13-inch MacBook Pro Display Backlight Service Program. Sadly it doesn’t cover the T-CON issues.

⟐ Commented July 01, 2025 at 7:48 MST

⟐ Answered July 09, 2025 at 5:09 MST

⟐ Commented June 30, 2025 at 13:09 MST

My Macbook Pro suddenly shut down and is not turning on, no chime, no Apple logo. There was no exposure to water. (However, I had kept a steaming bowl of hot water right next to the laptop.But this was in an open kitchen)

The Pro had less than 10% charge when it suddenly shut down. I charged it for another 10 minutes and tried to switch on, but no luck. I charged it completely till the magsafe indicator turned green, still does not turn on. So assumed that the battery is charging fine. I opened the mac and saw no visible corrosion or moisture(two tiny dots below the battery case are white and haven't turned red)

I have tried the following already.

1. SMC reset - With the magsafe adapter connected, when I do the reset the charge indicator turns green from orange.

2. Disconnected and reconnected the battery connector - still no life.

Its been only a year and three months I bought this in India. Could the logic board die out so soon? How to pinpoint if it is indeed the logic board?

Thanks a lot!

I am currently based in a small town in Germany with no apple genius store around. I will be visiting the store in February. Meanwhile any help would be appreciated.

Thanks!!

⟐ Commented January 26, 2025 at 6:30 MST

I should be able to upgrade the ssd to 256gb without much problem right? But which one would one use? or is it only possible to use another original SSD?

Don't need to be a monster of a ssd, just abit larger to store some more media.

Thanks in advance

⟐ Answered July 15, 2025 at 1:45 MST

Basically, I get no audio from my MacBook Pro Retina 13" Late 2013 A1502 16Gb 2.6GHz - everything else works beautifully as ever with this machine (incl USB & power) apart from the sound.

It has *not* experienced any water damage or drops, but I'm pretty sure this problem started when I plugged in my external power speakers' amp to the headphone jack... just like I did everyday before that, but for some reason this time I didn't get any sound output and the volume feedback was delayed when I tried to turn the volume up/down.

Symptoms:

• Built-in speakers don't make any sounds.
• No sound coming from output jack (headphones or external speakers).
• I see the volume no-access icon (circle with diagonal line through it) when trying to change volume
• checked System Preferences->Sound settings: nothing showing up under the Output or Input tabs (no "Internal Speakers" showing up)
• NO RED LIGHT coming from headphone jack... so it's not the optical speaker switch problem most people seem to have.
• In "system information", when I look in sound hardware... no description for input, output, etc...

I've hunted and hunted all over the internet trying all various suggestions that others have had success with - I've tried all of the following, but still no luck:

I've tried all of the following in the listed order but nothing's changed:

• repeatedly plugging & unplugging different types audio equipment to the headphones port (including apple headphones)
• disk utility and run disk repair (no errors)
• tried PRAM/NVRAM resets (I don't hear the "chime" sound)
• tried logging in via a new user account
• tried deleting ~/Library/Preferences:com.apple.systemsound.plist
• plastic toothpick in the hole
• looking in the hole with microscope & 1.8mm led to illuminate - can't see anything obstructions in the hole
• I downloaded and booted the ASD software EFI and OS diagnostics - no errors
• tried disconnecting battery then rebooting
• an isopropyl alcohol swabbed q-tip cotton swab

I also went to see a Genius at the Apple Store - they did their tests and said "there's only two options:

• replace the logic board as we don't replace individual components, or
• use a USB adapter"

The logic board repair quote was extremely expensive as my warranty is over and the charge probably includes replacing all 16Gb of memory too as it's soldered in; and I said I didn't think that last suggestion was very Apple-like - I'd need to carry around an ugly USB adapter and an external speaker/mic device just to hear sound!

So I'm at a loss and need your help!

Everything else works fine on my computer, so I'm willing to get my multimeter out and start testing hardware but I'm not sure where to start (I/O card / Logic board?).

My logic board # is 820-3476-A

Thanks

⟐ Commented November 19, 2023 at 8:52 MST

A few weeks ago, I decided to replace my macbook’s battery - after 5ish years, the only thing about this laptop (the best laptop ever made) was the battery life drained quickly. I ordered a battery + kit from iFixit, and replaced the battery. I conditioned the battery, but every time it discharged it would jump from above 50% battery to 7% battery, then die shortly after (i.e. a very discontinuous discharge). I received a replacement battery for the replace from iFixit, and replaced again. However, I’m still having the same problem with the battery jumps . I figure it’s unlikely to be the battery, but am unsure what else could could be causing the issue. I’ve reset PRAM and SMC.

⟐ Commented July 18, 2025 at 12:42 MST

⟐ Commented July 01, 2023 at 18:02 MST

⟐ Commented July 24, 2022 at 19:09 MST

I'm planning on buying a 13" Macbook Pro early 2015 model with 256 GB storage.

I want to check, is it possible to upgrade the storage later. I might want to upgrade to 1 TB to run VMs.

Regard

-Dino

⟐ Commented July 09, 2020 at 14:14 MST

Yesterday, I noticed that when I tilt the screen back beyond the 90 degree angle the screen goes black. Then if I move it back to 90 degrees it gets illuminated. But the angles vary a lot. Sometimes it gets illuminated only If I move it back to 60 degrees and sometimes a little more than 90 degrees.

One important thing to mention: when I open the lid until 60 degree there's no stage light issue, the display is clean, with no shadows. The issue starts at 60 degree with the shadows appearing and screen brightness being lowered until it goes black.

It works perfectly with an external monitor. So it must be something with a damaged display cable, right? Can it get worse than it already is, like damaging the logic board or something?

I can't afford an expensive repair (new display) so if I'm safe keeping the lid closed, I'm planning to use it as a desktop.

⟐ Commented June 19, 2021 at 12:00 MST

More over, when I press Shift, Control, Option and power button while charging, Magsafe turns green for 2 seconds and turn amber again. Which usually means the reset works. So the power button seems to work as well.

Any idea how to fix it? Won't turn on, no startup chime, and no light at all.

⟐ Answer edited August 08, 2024 at 8:29 MST

Anyone has something like that? How they solved your problem?

⟐ Commented February 05, 2023 at 20:51 MST

I had done the same with my current Mac Book Pro 13" Late 2011 with the help of iFixit guides and its working perfectly ever since, but will it be possible for the current newer generation MacBook Pro?

Regards,

AS

⟐ Commented August 03, 2022 at 4:57 MST

This morning, I launched my MacBook and the trackpad and keyboard were not responsive. After about 30 seconds, a little window popped up saying "Bluetooth keyboard setup. There isn't a keyboard connected." I have left this window for as long as 15 minutes but nothing changes.

I have tried restarting my MacBook but this keeps happening. It has happened at least ten times.

I have also tried doing this in safe mode but this does not seem to make a difference.

I don't know if it matters, but for the past six weeks or so, I have been charging my iPhone 6s Plus via one of the USB ports. The cord is a little frayed and the connection isn't always perfect. When my iPhone would connect, it used to switch to the "photos" app, but it's hasn't done this for about a week, although the phone is still charging.

I have no idea what to do; my MacBook has now been rendered completely useless by this glitch. The keyboard and trackpad are completely unrecognised by the computer itself.

Any and all help are much appreciated.

⟐ Commented September 22, 2022 at 8:31 MST

It has been working fine and just today it stopped all of a sudden. I have absolutely no clue what happened to it.

It kept searching for a bluetooth keyboard. However external keyboard and mouse works, but whenever i unplug them nothing else works.

Power button is the only button that works.

My macbook is currently OSX 10.9.5

I searched on sites and it appears late 2013 had a EFI update that fixed it but i couldnt install any EFI update on my macbook pro.

⟐ Answered September 06, 2022 at 23:48 MST

People said that i should go to disk utility and unlock the locked disk there

But the locked disk wasn’t there

And even if its there, i don’t know the password too. And I can contact the owner anymore

⟐ Commented December 03, 2022 at 9:20 MST

Here are some other things I have tried:

1) External keyboard and mouse work perfectly fine. I can log into OS X and everything functions normally with an external keyboard and mouse.

2) I performed an SMC reset using the built in keyboard. As I said, I know the keyboard is good.

3) I can not reset the PRAM using the built in keyboard. I can reset the PRAM with the external keyboard.

4) I have tried to leave the Macbook working till the battery dies then leave it for one night without charging and afterwards restarting it with power supply plugged in and they worked but afterwards they in s random startup they return unresponsive (I have tried this for two times and worked and I trying my third time now)

Please don't fixate on replacing the keyboard and trackpad.

The keyboard works before the chime (SMC reset) and does not work after the chime (can not reset PRAM). It seems like the logic board is turning off the keyboard when it chimes. Not sure what could cause this. Does anyone have any ideas?

⟐ Commented September 17, 2025 at 20:52 MST

I the new SSD is inserted into the PCIe slot correctly and I should have the firmware since I am running 10.13.6 so any help as to why its not showing up for me to restore a time machine backup would be greatly appreciated.

The only thing i can think of is the Aura SSD is damaged.

I have since put my old SSD back in and to allow me to work.

⟐ Answered April 07, 2025 at 22:50 MST

The power key is the only one still responding, so I've been using a USB keyboard and mouse, but that isn't exactly practical to bring to classes.

My assumption is that it's a loose cable, as I was told by the Genius bar that the keyboard and trackpad are controlled by the same cable (they told me my laptop was scrapped and I needed to purchase a whole new one...how about no?).

Does anyone have any ideas or advice? What does the cable for the trackpad/keyboard look like so I can open up the bottom and see if it's loose?

Thanks!

⟐ Commented October 08, 2022 at 3:29 MST