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iPad Air Digitizer / Touch Screen not working

I have been trying to repair an iPad Air screen for a friend.

The touch was not working at all , but the home and power buttons were working fine. Firstly I tried doing a factory restore but the issue still remained; no touch response at all. I then tried opening it up to test for loose connections, I unplugged all connections relating to the digitizer and replaced them - this still did not solve the issue.

I have now tried buying a new digitizer, though not an official one, and after fitting it the same problem is still occurring - no touch response at all.

So is this a motherboard issue, or am I missing something? Any help and guidance would be appreciated as this is not something I had previously done before.

Thanks

Marty

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Postato: 7 set 2016

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while uncommon in iPads, it is possible that its the touch sense chip on the mainboard. That would really only make sense if the iPad got wet or had a bad drop.

If it were me, I'd try cleaning the digitizer connectors and the motherboard connectors with 99% IPA. Flood them and then let them air dry. Check for any damaged teeth on the connectors and if they look good, plug it all back in and give it a test. Also, the metal pieces on the back of the connectors likes to bend upwards, making it impossible to get a proper seating. Make sure that piece of metal is straight.

If that doesn't fix it, its probably the touch sense chip.

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iPad Air Digitizer / Touch Screen not working

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