No sound from imac

[diveo]

Hi out there, I have a 2007 imac 20", first of the silver ones. I'm running OSX 10.6.4. Suddenly have no sound . I've had a browse of a couple of threads, but am none the wiser. The speaker icon, top right is greyed out. When I moved the mac, it did provide an intermittent burst of sound, but have not been able to repeat that. Plugging in external speakers does not make a difference. Using the sound up and down controls not helping, just get the normal sound display, but with a stop sign below it (circle with a stroke through it). Is this a return to store job - as out of warranty and out of applecare!

cheers

 

[spinnerlys]

Go into System Preferences > Sound > Output and take a screenshot and attach it via the

button to your next post.

 

[diveo]

Thanks Spinnerlys,

I think the screenshot should be attached

 

[spinnerlys]

To make smaller screenshots (for future reference):

It seems, you digital output is active, there should be a red light visible inside the headphone/line-out port. Plug a 3.5mm audio connector into that port and pull it out, repeat the process until the red light is gone. It should take less than ten times.

 

[diveo]

Thanks for that, there was no red light, but it has got the onboard speakers working, but when I plug in my external set, I just get a dull hum from them. Does that make any sense to you?

cheers

 

[spinnerlys]

Thanks for that, there was no red light, but it has got the onboard speakers working, but when I plug in my external set, I just get a dull hum from them. Does that make any sense to you?

cheers

Can you provide screenshots of when the speakers are connected and when you have them disconnected, using the internal speakers?

Shift + Command + 4, then leave the keys, press Spacebar and select the window via mouse.

 

[diveo]

Sorry about that, I've been in and out all afternoon. Just so that I know what I am looking for, what should the screen shots be of? - the same window with and without speakers plugged in?
cheers

 

[spinnerlys]

Sorry about that, I've been in and out all afternoon. Just so that I know what I am looking for, what should the screen shots be of? - the same window with and without speakers plugged in?
cheers

Yep, one shot with the speakers plugged in and one without.

And no need to apologise, it is almost always better to be outside than in front of the computer.

 

[diveo]

Hi thanks again: first is without speakers: the second is with

Decent day up here in Scotland - blue skies, cold but clear and sunn:y! - although sun has just gone down.