Macbook pro no sound

I have tried every resource on the net... can anyone help? sound works when i turn on the mac but anything eles I get the circle with a slash and there is no adjustment or sound when I turn up or down. I bought this new in 08 and this is the only problom, I have tech tool deluxe and passed everything except the volume failed, inserted the headphone jack several times etc optical light comes on when i play a song on itunes but no sound. shot a dab od wd 40 in the jack inserted several times no luck? I am getting very frustrated.. I bought apple care and genius bar etc. and never used it , now I need it and it says im expired ***?? can anyone help before I smash this god dam thing?

scandan780 wrote:
Doing some research I think it is the micrphone cable that is not connected, but how does this affect the sound not working?
Thanks,
Dan
Did the sound return after you reconnected?

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my macbook pro 15' sound is not working, every time i turn on the internal speakers they just turn back off, and i have already tried putting in my headphones 5 or 6 time

Hi eleni_georgia,
Welcome to Apple Support Communities.
The article linked below provides some additional tips that will help you resolve the audio issue that you described.
Troubleshooting issues with no audio from built-in speakers on Macs
http://support.apple.com/kb/TS1574
Cheers!
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<Email Edited by Host>

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u2hmtmkmkm wrote:
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Macbook pro no sound

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