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Repair information and guides for the iPhone 6 that was released on September 19, 2014. Model Numbers: A1549, A1586, and A1589

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iPhone 6 Screen not responding to touch.

Hi, I’ve been restoring a wrecked iPhone 6 to new condition and unfortunately the original screen was smashed to pieces and flex cables were ripped. So I purchased a new screen assembly(front camera etc included) and a new housing as the original was bent moved everything over, phone worked perfectly except the touch screen. So I assumed bent iPhone 6 = touch disease (even though it showed no grey bars or other symptoms) thus I tried re soldering the touch ic chip. Finished doing that and the iphone still turns on but still no touch.

The new screen assembly works with touch on a test phone so it’s definitely not the screen itself.

Any help would be greatly appreciated, Thank you.

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Compare diode readings of touch FPC to known good board.

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How bent was your device? The risk here is that the logic board took some damage in the Touch area. This could be a problem with the CUMULUS/MESON IC’s, or the CHESTNUT IC which powers them. This could also be damage to a passive component on those lines, such as a cracked component or solder connection. Worst case, this could also be some cracked internal lines.

As Chris suggested, start by comparing the LCD/Touch connectors to a known-good board (or the values in ZXW). If that doesn’t give you any leads, carefully inspect the board and possibly reflow, or better yet, replace the IC’s mentioned above…one at a time.

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