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Repair information and guides for the fifth generation of iPhone. Model: A1387

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Display digitizer replaced, touch is not working

Hi, I replaced a cracked screen on a (refurbished) iPhone 4S and touch was not working in a part of the screen. So, I tried with another screen and with the original part and touch is not working anymore.

What can I do?

Thanks!

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After hours left on at rest, the touch now works. I turned it off and I attached the new display, the original and the current one and now is not working...

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gioelecorsinovi, just to rule it out, I would replace it once more with a new assembly. If even that should fail, you are having trouble with the Touch IC or the related circuitry. Of course make sure that you check the connector for the digitizer for any broken bend or corroded pins.

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There are no corroded pins or other related. Is possible to check which is the component that is not working anymore? Maybe the Touch IC or Touch Chip Quartz. Thanks

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