Headphones not working, even after I replaced the jack
A couple of months ago I messed with an electric guitar amplifier, trying to use the iphone as speakers (there was an app for that).
I did a stupid thing, plugging the amp out to the audio jack (I know, it was idiotic).
After that, I couldn't hear music through headphones anymore, but the headphones controls still worked (i.e.: could still play/pause music through the buttons on the headphones) .
I thought I might have broken the audio jack, so I replaced it. The replacement went fine (that is: volume control, mute switch, headphones' controls work), yet I still can't hear any sound from the headphones.
I guess I broke the chip on the logic board which manages headphones' output (though it's weird that headphones' controls still work).
Now my question: any ideas about where to get a new logic board? Any alternative fixes?
Remark: I don't want to bring my iPhone to an Apple store.
Thanks to everyone
Is this a good question?