No touch after digitizer replacement

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iPad 4 LTE CDMA (A1460)

Repair guides, disassembly, and troubleshooting information for the 4th-generation Apple iPad with CDMA 4G LTE cellular networking (Verizon), available with 16, 32, 64, or 128 GB of storage. Released in November 2012. Identified by model number A1460.

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sunruh @sunruh7131

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Postado: 27 de fev de 2020

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No touch after digitizer replacement

I was brought an iPad 4 CDMA with a broken display. I ordered a replacement and when it arrived I installed it.

Everything went good with the install but there was no touch. I tried disconnecting and connecting it a few times and it did not help. I then hooked up the original broken display and everything worked so I called iFixit and they sent out a replacement.

When that one showed up I installed it and the same thing happened, no touch but the original display works.

There has to be an explanation for this, right?

What am I missing?

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I don’t know what I did different, but I got the display to work.

Thank you for the replies

1 de mar de 2020 por sunruh

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I don’t know what I did different, but I got the display to work.

Thank you for the replies — sunruh

jdm @jdm16255 Rep: 37 2 · Answer 1 · 2020-02-27T06:29:37-07:00

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jdm @jdm16255

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Postado: 27 de fev de 2020

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I went through at least 4 digitizers to get one that worked properly on an iPad 5. The bad units partially worked — they had dead spots on the touchscreen. Never saw one be completely dead, but I suggest trying again. Make sure you’re getting the correct generation/model digitizer.

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sunruh @sunruh7131 Rep: 1 My Shop 1 1 · Answer 2 · 2020-02-27T06:57:34-07:00

sunruh @sunruh7131

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I tried pretty much the whole display on both of them and nothing.

The home button that came with both of them does work.

I’ve double checked the model number, so I don’t think that I ordered the wrong part.

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jdm @jdm16255 Rep: 37 2 · Answer 3 · 2020-02-27T07:06:48-07:00

jdm @jdm16255

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Postado: 27 de fev de 2020

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Another possibility is that the flex connector is getting dislodged during re-assembly. When you pull up the digitizer check for damage to the flex cable. If it’s ok, then re-seat the cable and test with the unit open to see if you get any response.

I haven’t done gen 4, but on gen 5 the flex cable had to be folded just right for it to fit in without damaging it.

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iPad 4 LTE CDMA (A1460)

No touch after digitizer replacement

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