Phone stucked in headphone mode

[Norway]

My phone (Xperia S) is stuked in headphone mode. I've tried to connect and disconnect the headphones. And I've tried both repair and reset the phone in Pc companion. I've even tried to remove the plug on top of the phone (removed the small screws under the cover), the phone still says that headphones is connected.

To answer the phone I have to use loudspeaker or ear phones, since there is no sound sent to the little speaker when my phone think the headphone is connected. 

Any solution proposals?

[Norway]

I've tried different headphones all works fine. I just tried a pair new Sony headphones, the button dont work, accept from that the headphones work fine. 

[_alexdon_]

So now the phone actually works fine with many headphones?

[Norway]

The phone works fine with earphones connected. The problem comes when I disconnect the earphones. The phone stil shows the earphone sign and there is no sound in the little speaker. To answer the pone I have to turn on loudspeaker or connect earphones.

[_alexdon_]

You say you have repaired and still encountering problems?

[bsd]

I have exactly the same problem.

It probably happened for the first time about two weeks ago. "Cleaning" (there wasn't actually any dirt) with a cotton bud did the job. But it has happened quite a few times since then and now basically everytime I use a headphone.

I thougt it was rather a mechanical than software problem, is there some kind of switch in there that could have a defective contact?

[Norway]

The phone says that earphones are connnected when they are connected and when they are not connected. I've tried all solutions that has been proposed witout any change. 

[_alexdon_]

I am sorry,the ultimate solution I give is to take the phone to a sony center.