MacBook Pro 13”/2011 non audio output

[robertorossi@62]

Hello everybody.
For some time my MacBook Pro 13" / 2011 has no longer emitted any sound: no boot "bong", no audio via the 3.5 mm jack/optical output.
If I connect my Bluetooth speakers the audio is 'is.
from the "sound"/output system preferences the message indicates that no audio outputs are found (not even inputs).
I just subscribed to Apple Music (I'm not joking) and I have a silent MacBook
Is it possible to resolve this unpleasant problem?
I ask you experts for help.
Thanks in advance.

PS: I tried inserting the audio jack into the dedicated socket several times but it had no effect.

Rob

 

[Bigwaff]

For some time my MacBook Pro 13" / 2011 has no longer emitted any sound

Version of macOS installed?

 

[robertorossi@62]

I installed Monterey because with Catalina the Music app wouldn't let me access my Apple Music account. the problem was there with Catalina (it happened suddenly and not when I installed the OS) and remained with Monterey.

 

[Bigwaff]

I installed Monterey because with Catalina the Music app wouldn't let me access my Apple Music account. the problem was there with Catalina (it happened suddenly and not when I installed the OS) and remained with Monterey.

Try to run diagnostics

Use Apple Diagnostics to test your Mac - Apple Support

Apple Diagnostics, formerly known as Apple Hardware Test, can check your Mac for hardware issues.

support.apple.com

If diagnostics can’t run, you may have to install Catalina again (or a version of macOS supported by the hardware) and try diagnostics again. I assume you used OCLP to install Monterey?

 

[Fishrrman]

You're saying that when you connect an external device to the headphone port (such as speakers or headphones) that you DO get sound output?

but...
If you UNPLUG the device from the headphone port, there's NO sound from the internal speakers?

If so
It could be that the tiny mechanical "switch" in the headphone port has become "stuck" in a position that tricks the Mac into thinking there is ALWAYS something plugged into the port. Even when you keep inserting/removing the plug.

or
It could be a software failure.

Here's something I found in my personal Mac archives:

How do I fix a MacBook earphone port, stuck in optical mode

My 2009 MacBook’s speaker doesn't work (most times). The digital audio out port gets stuck (a red glow appears from within the socket). It is an old MacBook with separate headset & mic ports....

apple.stackexchange.com

Final thought:
For a 2011 MBP, I wouldn't spend much (any) money in trying to "fix" this.
After 13 years, time to start shopping for something new (or recently refurbished)...

 

[robertorossi@62]

@ Fishrrman:​

no audio from external device, no audio from the internal speakers.

 

[robertorossi@62]

Apple Diagnostic.

 

[robertorossi@62]

@ Bigwaff: yes, OCLP.

 

[Bigwaff]

Apple Diagnostic.

Here’s a thread with some relevant info related to the error code

AHT Error Code: 4SNS/1/40000001:VPOR-6.851 - Apple Community

discussions.apple.com

Is the sensor error related to your audio issue? Hard to say. If @Fishrrman advice doesn’t bear fruit, and you absolutely need audio, a trip to a repair shop is in order. Keep in mind, based on its age, even the diagnostic fees might be approaching more than the laptop is worth.