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Hi, a try would be to reset the PRAM by pressing cmd - alt - P - R simultaneously at startup untill you hear 3 startup chimes, then try to change the sound settings
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I am having the same problem. I replaced the battery and I was able to reprogram my code, but the lock is not turning. It makes no sound like it use to. Any ideas?
Opened the unit up recently and saw the problem: detached wire from the speaker. All it needed was a little soldering to attach the wire back to the speaker and presto! The sound was on again.
When you plug in headphones, very often they get accepted automatically and the sound port changes in the OS accordingly as well. But when you unplug them again, it happens quite often that the OS is not switching it over on its own (even still happens in win 7). Just go into the volume mixer panel/options and change the output back to the port of your speakers.
Brieftly speaking, my internal speaker stopped producing sound, but when I plug earphones in, there is sound in the earphones.
Just plug in-and-out ur earphones several times (it took me 5 tries) and voila internal speakers work again!
I think there is a mechanical sensor inside the sound output (plug for the earphone) so that once it senses a plug getting in, it shuts internal speaker.
Maybe the mechanical sensor was jammed (spring problem i guess) and it still believe that u have ur earphones plugged-in. "Clogging" the hole for the earphones would allow the spring to spring back to initial position...
I had the same problem; my laptop's speakers suddenly stopped working but I could still use the headphones and sound was fine.
I played around a while and searched the net; and I got them to work:
Open Control Panel- Sound, Speech, Audio Devices-------->
1) Audio Tab
2) Under 'Sound Playback' hit Advanced
3) At the bottom where it has Speaker Setup change it to "Laptop Stereo
Speakers" (mine was initially on "Desktop Stereo Speakers" for some odd
reason)
My Kenwood VR-507 had been working great. I hadn't changed anything. I hadn't even moved it. It just suddenly stopped producing sound. It didn't just stop while it was on. I had turned it off and when I turned it back on, nothing. I tried running the speaker setup to see if it would output pink noise, I could hear the test sound, but I couldn't hear any audio from the TV or DVD player..
Hi,
It is possible that:
1. You may have recently installed an add-on/external device such as a multimedia keyboard which changed the audio output from internal to external;
2. The laptop's internal speaker might have gone dead (highly unlikely but still a possibility) - try plugging in external speakers or a headset and check;
3. Most if not all laptops uses a female stereo babyphone jack to connect to external speakers. This jack has a built-in switch that cuts off internal speaker if an external is plug in. If you are using eternal or headset from time to time, it is possible that the switch might have locked to external and does not switch back to the internal;
4. You may have a hardware issue specifically the sound card/chipset. This of course would require an inshop repair which may be better off with an authorized service center. At worst is have the entire laptop replace if it is confirmed to be a hardware issue.
Hope this be of some help/idea. Post back how things are or should you need additional information.
Good luck and kind regards.
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