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原帖由: Minho ,

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Not ghosts…but these [https://www.google.ca/search?q=gremlins&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjgj6vUz-XeAhXJnuAKHaTxDmoQ_AUIDigB&biw=1655&bih=861|guys] ;>)

If using only a known-good battery and Lightning port connected to the logic board and the phone still won’t boot, then the problem is logic board related. You could start probing the logic board, if you’re so inclined. Start with the main power rails (PP_BATT_VCC, PP_VCC_MAIN and PP5V0_USB) to see if they are shorted to ground.

Let me know and I can provide more steps. Otherwise, you may want to consider having this looked at by a micro-solderer.

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