iPad 4 digitizer has no touch after multiple replacements.
Within the last few days, I’ve changed the digitizer on two different iPad 4’s. I changed it 4 different times and each time the touch wouldn’t work. Same issue with the second iPad 4. I am using a battery isolator. Is there a possibility by using the isolator I could have damaged any sensitive components beneath the logic board? Because it seems strange that 4 digitizers would be defective.
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