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Origineel bericht door: Minho ,

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You definitely need to inspect the Home button FPC on the logic board. It could be damaged and shorting out. But it could also be a defective Home Button that is shorting the circuit. If the FPC looks good and there are no issues with the surrounding components, then I would try to install a "regular" Home button (Touch ID will not work). If that solves the problem, it is either the button or the Mesa circuit (which drives TouchID functionality).

Ultimately, the logic board will have to be tested by a micro-solderer to understand the root cause. If it is the MESA circuit, that can be repaired to restore Touch ID.

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