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Fourth generation of iPad, released November 2, 2012, available in 16, 32, or 64 GB models. Model Number A1458

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Half of the touch screen not working

iPad 4 with only 1/2 of the touch screen working. I’ve replaced the digitizer with 2 working touch screens and the problem remains.

Under microscope all the ribbon connections look fine with no signs of damage or lifting.

Is it time to reball the touch ic?

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Touch ic tends to affect the whole screen in my experience. I would suspect the ZIF connector more at this point even if it looks ok under microscope there’s no way to look inside it.

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Bruce Hilsabeck will be eternally grateful.
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