Using audio line in

Greetings everyone,
I'm trying to use the audio in minijack on my tibook. Should I be able to plug into the jack with a stereo mini-plug? I'm not able to insert the mini-plug, and I'm reluctant to force it.
The audio in jack has a white (nylon?) insert that prevents me from inserting the mini-plug. Does your audio in port have a similar collar?
Thanks for your thoughts.
Respectfully,
Tony

Hi, Tony.
I'm trying to use the audio in minijack on my tibook. Should I be able to plug into the jack with a stereo mini-plug?
Yes, a 1/8" plug.
I'm not able to insert the mini-plug, and I'm reluctant to force it.
Your reluctance is prudent and well-founded.
The audio in jack has a white (nylon?) insert that prevents me from inserting the mini-plug. Does your audio in port have a similar collar?
No, and the fact that yours does suggests that someone has inserted something into the port that doesn't belong there, or perhaps has broken off a plug in it.
You might try this approach to removing whatever is in the port, bearing in mind that your Tibook should be powered off, disconnected from AC power, and the main battery removed first. Find a clean, sharply pointed drywall screw that is just a little too thick to slide freely into the white plastic collar in the port. Carefully thread it into the collar with your fingers just far enough for the threads on the screw to get a purchase on it — not far enough to touch any of the contacts inside the port. Then see whether you can gently pull out the collar and whatever else may be attached to it.
If that fails, you would be well advised to forget about the port, and instead buy a Griffin iMic USB sound card, which will give you line- and microphone-level input and headphone and speaker output options through one of your Powerbook's USB ports. The profoundly unappealing alternative is to replace the Powerbook's main logic board, to which the line-in port is soldered.

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