my headphone plug is not working what can i do to fix it?

the plug were i used to plug my headphones and speakers is no longer working anymore.

Is this a physical problem and your are referring to the plug (i.e., the thing attached to the headphone's wire) or the jack (socket) in the computer iself. If it's the plug that's a trivial DYI fix using a plug you can pick up most anywhere (e.g., Radio Shack) and a soldering iron. If it's the socket in the computer, that's a bit more work. Not impossible, but not somthing I would put in the DYI class.

If this is a software problem, not sure at this point what to suggest -- maybe smc/pram resets.

[I don't understand the previous reply at all 😕 ]

SLEEP is a reset of the system.

Worked for me for a noisy fan and also for a dead headphone jack.

You will not lose any info.

Xchump wrote:

SLEEP is a reset of the system.

No, Sleep is only a suspension of the current state, nothing changes, it's just saved and comes back when woken, it has absolutely no effect whatsoever bar passing the time ...

Is there a red light coming from the socket ? If so then it's got stuck in Digital Audio Out mode - try inserting and removing the headphone jack while wiggling it a bit as that can free up the small switch inside the socket.

If no red light try doing a Parameter RAM reset - hold down command/option/p/r keys at start up and wait for three chimes before releasing the keys.

Michael,

Thanks for pointing out that sleeps resets nothing.

Xchump has been posting this cure all for numerous problems.

You can also try resetting the SMC, which is a common fix for microphone jack problems on Macbooks.

For a Mac Pro:

1. Shut down the computer.
2. Unplug the computer's power cord.
3. Wait fifteen seconds.
4. Attach the computer's power cord.
5. Wait five seconds, then press the power button to turn on the computer.

Just noted you have your details set as Macbook pro (this is the Mac Pr forum) so:

http://support.apple.com/kb/ht3964

Resetting the System Management Controller (SMC)

Resetting the SMC on Mac portables with a battery you can remove

Note: Learn about removing the battery on MacBook and MacBook Pro.

1. Shut down the computer.
2. Disconnect the MagSafe power adapter from the computer, if it's connected.
3. Remove the battery.
4. Press and hold the power button for 5 seconds.
5. Release the power button.
6. Reconnect the battery and MagSafe power adapter.
7. Press the power button to turn on the computer.

Resetting the SMC on portables with a battery you should not remove on your own

Note: Portable computers that have a battery you should not remove on your own include MacBook Pro (Early 2009) and later, all models of MacBook Air, and MacBook (Late 2009).

1. Shut down the computer.
2. Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
3. On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
4. Release all the keys and the power button at the same time.
5. Press the power button to turn on the computer.
   Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.