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Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White. This page aims to help users troubleshoot, fix, and seek help for the iPhone 4.

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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

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Have you taken a good look at the logic board? Checked for burned out SMD caps and resistors? I would think that those would go before the power from the Amp reached the audio chip.

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Giulio M, the logic board will cost you almost as much as a new phone. Anyhow, it is available at like this. As for alternative fixes, take a look at the board first. See which, if any, components got obviously damaged.

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Giulio M will be eternally grateful.
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