Having issues with my internal microphone... PLEASE HELP!?

I use my internal microphone on my MacBook Pro very often, especially in programs like GarageBand, Audacity and Photo Booth. However, yesterday after attempting to use Skype (for the very first time) my internal microphone does not work properly in any program. The only time it responds is when I tap the area directly above the microphone.

- I've already checked the settings in System Preferences

- I deleted all files associated with Skype

- I've tried holding the "option + command + r + p" while starting the computer

- I've delete the "com.apple.soundpref.plist" file in the user library

Has anyone else encountered this problem and knows of a definite fix, or at least someone who can offer any other suggestions?

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The microphone cable connector could be not well seated in the microphone socket causing the malfunction. We often see this issue with the iSight connector on the macbook 1181 model cause opening and closing the lid could make a stress on the cable connection (if the ribbon cable is not well glued with a tape inside the LCD screen)) and eventually disconnect it. You'll have to open the screen to check it out.

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i have a very similar problem: the internal mic on my macbook pro 15"(3.06 GHz core duo) is simply not registering any sound in any application. any advice here greatly appreciated.

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Sean Cobb will be eternally grateful.
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