Sound suddenly gone from MBP

[Tilly]

I was in Teams meetings all day today on my university's MacBook Pro and during the last one I connected via my iPhone temporarily and left the meeting I was in. When I went back to the laptop I couldn't get any sound. I can't get sound for anything now. Checked Preferences and all seems normal (internal speakers and internal microphone). I wasn't using headphones. Any ideas what might have happened?

[Sam - MacAmbulance]

Try a pram and smc reset, see if that helps.

Pram : start up the Mac holding alt+cmd+P+R until you hear the startup chime a second time, then let go 

Smc : Shut down the Mac, then hold down shift+ctrl+alt and push/release the power button once, then let go of the other keys. Wait 10 seconds then start up again 

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Regards Sam Mullen +44 (0)7747778022 in...@macambulance.com www.macambulance.com MacAmbulance Ltd. Providing Affordable Mac/PC Support and Web Development

MacAmbulance Ltd. is a registered company in England & Wales, registration number 8466597 This email is intended solely for the addressed recipients and may contain privileged or confidential information. If you have received this email in error please notify the sender and delete the email immediately.

On 22 Sep 2020, at 22:33, Tilly <tilly.h...@warwick.ac.uk> wrote:

I was in Teams meetings all day today on my university's MacBook Pro and during the last one I connected via my iPhone temporarily and left the meeting I was in. When I went back to the laptop I couldn't get any sound. I can't get sound for anything now. Checked Preferences and all seems normal (internal speakers and internal microphone). I wasn't using headphones. Any ideas what might have happened?

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[Tilly]

Hi Sam,

Thanks the PRAM reset worked - hooray! I've been on meetings all day today so good job it did!

However tonight I wanted to start up my own trusty MBP (one year older than the university laptop ...2011) for a personal Zoom meeting today and I am seriously worried. I press 'Start', hear the familiar chime and some whirring, see a white screen briefly and then it goes black. I tried the methods you suggested for the other laptop but neither of them change anything. Doing a Pram reset (and holding the keys down) it chimed, whirred and went from white screen to black continuously till I took my fingers off.

WAIT - I've just opened the laptop and the screen is there!!! I don't know what on earth happened! Anyway it looks like all might be well after all so false alarm. I just wish I knew what I did to help it in case it happens again!

Thanks again Sam,

Tilly

[Sam - MacAmbulance]

2011 rings alarm bells for me, it was a bad vintage for lead-free soldering so graphics cards were fairly unreliable that year. I would expect it to fail at some point soon, just keep regular backups and keep an eye on new models, especially the Apple Silicon ARM-based Macs on the horizon

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Regards Sam Mullen +44 (0)7747778022 in...@macambulance.com www.macambulance.com MacAmbulance Ltd. Providing Affordable Mac/PC Support and Web Development

MacAmbulance Ltd. is a registered company in England & Wales, registration number 8466597 This email is intended solely for the addressed recipients and may contain privileged or confidential information. If you have received this email in error please notify the sender and delete the email immediately.

On 23 Sep 2020, at 21:20, Tilly <tilly.h...@warwick.ac.uk> wrote:

Hi Sam,

To view this discussion on the web, visit https://groups.google.com/d/msgid/smug/30971bb3-9c1f-4a66-826c-de20999a1893n%40googlegroups.com.