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2013年9月10日に発表されたApple iPhone 5sの修理情報とガイドです。モデル A1533、A1453、A1457、A1528、A1530、A1518。

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iPhone 5s not charging even after changing U2

Hi I got an IP5s regarding charging issue. The things that I already changed :

  1. Battery
  2. Charging Port
  3. U2 (1610A1)

Checked lines :

  1. TP1-1 PP5V0_USB_CONN (4.29v)
  2. C304 PP5V0_USB_PROT (4.29v)

Not yet change Q2, because the C304 showing normal volt to me

What should I do next ? Do i need to change the Q2 as well ?

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Q2 is fine. This MOSFET is configured as a reverse voltage protection circuit so if you are seeing voltage on either side, then it is working fine. The problem here is that the voltage you are measuring is low. You should be reading ~5V as this is coming from the charger. What exactly kind of charger is it connected to? You should put an ammeter inline to see what the current draw is.

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The ammeter didnt show any current going through the circuit. Do i need to try with a different charging port ? Or it is make sense if the U2 is not soldered properly ?

さんによる

If you have no current draw, that means the phone isn't really trying to boot. This could be caused by a short or an improperly soldered Tristar.

さんによる

Hi. I already changed a new U2 but still not charging. What do u think the problem is ?

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Azim WHITE さん、ありがとうございました!
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