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Repair information, troubleshooting tips, and guides for the sixth iteration of Apple iPhone, announced on September 12, 2012. Model: A1428, A1429

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iPhone 5 no longer powers on or connects after dock replacement.

After replacing the dock of my iPhone, my iPhone 5 can no longer be charged or connected to a computer. It can however, play audio to the headphones and record audio from the microphone, so the cable which connects to the logic board is at least partially working. I have verified that the batter can be charged in another iphone 5. Is there any way I can troubleshoot with a voltmeter to see where the problem is?

I tried replacing this dock with another, and no luck, I have also made sure the cable works as well. I have compared photos of the connector on the logic board itself, and can see no damage, I have some photos here - http://imgur.com/a/Ieqz5

After a little searching, it looks like the IC U2 could be the problem, is there anyway I could verify this?

Thank you for your help.

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Most likely sounds like the U2 IC, especially if multiple docks have not changed the issue.

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5 Comments:

Is it possible that I could have damaged the U2 IC while replacing the dock? Looking at the location of it, it seems to be nowhere near the area where I was working, and also underneath another part.

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No, the U2 IC is the primary problem. The dock flex never was the issue.

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Considering charging and connecting working completely before I replaced the dock, I don't see how this is possible

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Then why did you replace the dock to begin with?

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Because I originally had problems with my headphone jack and microphone.

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