Question about Harman Kardon Audio Players & Recorders
Here's something you can try:
go to preference pane select sound then output bar and arrange the volume labeling , can you hear some sound.
Here's some other:
I have a solution for you all. This fixed the problem for me. First, make sure you are all running 10.5.5. If you are not, run software update from the Apple Menu. If you are set there, go to Applications --> Utilities --> Disk Utility --> Make sure your Hard Drive is selected on the left hand panel --> MAKE SURE the First Aid tab is selected! --> Click Repair Disk Permissions. This may take a while, FYI. As soon as Disk Permissions have been repaired, restart your computer right away. That fixed the problem at my end. Good luck everyone!
Last but not the least !
I had this very same problem. At some point I suddenly realised that I wasn't hearing sounds through my internal speakers and the usual volume keys did not produce 'feedback' when trying to increase or decrease the volume. So I opened my 'System Preferences' and rather than see the usual option of 'Internal Speakers', all I saw was 'Headphones' greyed-out with no other option.
But fortunately the fix is immediate and simple. Plug-in a set of headphones, take them back out again and viola! Inside the 'phone jack is a small optical sensor that 'sees' when a pair of headphones are in the socket. Sometimes the sensor becomes dirty and therefore 'blind' and assumes headphones are still plugged-in when they obviously aren't.
Just for fun, when I applied this particular fix, I opened up my System Prefs again and as soon as I withdrew the headphones, the option 'Internal Speakers' immediately appeared and the previous greyed-out 'Headphones' was gone.
Hope this would help !
Posted on Sep 07, 2009
Testimonial: "Thank you! I did not think to look in preferences, DER."
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Posted on Jan 02, 2017
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