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Repair information and guides for the iPhone 6 Plus that was released on September 19, 2014. Model: A1522, A1524

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Touch screen not working tried replacing both ICs

Hi

I am having two iphone 6 plus, in both touch screen not responding. I tried by replacing both ICs and jumper on M1 pad but still having same problem. what it could be ? Any suggestion will be highly appreciated. Please share your experience if you had same regarding this problem.

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Did you try a known-good screen before doing the micro-soldering? It may be a dumb question but sometimes the problem is not what we think. If you confirmed with another screen that the issue was logic board related, then check the various touch-related voltages to insure they are present and not shorted. If they look good, then consider removing one or the other Touch IC (one at a time), it may have a connection issue with one of the solder balls.

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I had a bad batch of Meson ic's that had no touch. Maybe try reballing a known good one and tray that.

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yes, i have tried everything still having same issue. i have tried by replacing both ic one by one and using new screen

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I also faced the same error on that cases while press CPU it`s working fine,Hope there is not such a case there.You have to check Gnd resistance on Touch connector .I see the many mistake on that These caps are also important role on Touch not functioning.Dry soldered or over soldered makes short.Check it and post result.

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