hi sir good day to all, pls help on my ipad air A1474 model.The problem is sometimes touch screen is working and sometimes not
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I have replaced fpc connector,replace and reball touch ic's and lastly i reball the cpu but nothings change. Pls help ,Thank you

I have replaced fpc connector,replace and reball touch ic's and lastly i reball the cpu but nothings change. Pls help ,Thank you