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mac thinks head phones are plugged in

I know this question has been asked and answered a lot because i have seen the answers while trying to solve this however none of the solutions have worked. My mac thinks head phones are plugged in when they are not. Most pages i have looked at have mentioned a red light being on in the headphone jack however mine does not display such red light. I also noticed that upon restarting my mac the startup sound comes from the build in speakers but that is the only sound that i can get to come through. I have tried plugging in my headphones along with other things and that has not helped. any new advice would be greatly appreciated.

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Please tell us your exact machine.

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Does the sound come through the headphone jack without any problems? Most people with the "red light" issue have S/PDIF unnecessarily activated, which is not the case here. It is therefore very unlikely that any sort of dust or debris is at fault. The most likely issue is that the internal speakers are broken, or there is an issue with the motherboard. I'm not sure if this applies A1425 and A1502 models, but if you have an A1278 model, the startup tone comes through the internal subwoofer, which is separate from the left and right internal speakers, so the fact that it makes a startup tone doesn't rule out issues with the internal speakers.

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The sound comes through the head phones fine. Sometimes it seems a bit fuzzy but I think that is more in part the crappy old headphones. I'm pretty ignorant when it comes to computers so I apologize if this is a stupid question, but would it still constantly say that the head phones are plugged in (even when they are not) if the speakers going out was the problem?

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Oh wait...I'm being an idiot. Under the sound pane in system preferences, does it constantly say "headphones" under the output tab? If so, I would start off by resetting PRAM and SMC.

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taylor will be eternally grateful.
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