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iPhoneの第2世代モデル。モデル番号はA1241 / 8 もしくは16 GBの容量/ ブラックもしくはホワイトのプラスチック製背面ケース。修理はオリジナルiPhoneに比べて直接パーツに作業ができます。ドライバー、こじ開けるためのツールと吸盤カップが必要です。

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Fixing after saltwater exposure

Have followed the posts here carefully but they are not answering my questions.

1. iPhone 3G was dropped very briefly in salt water and then appeared dead. Would not turn on.

2. Took it apart and followed all cleaning directions here except did not remove logic board heat shield.

3. Plugged phone in to AC power and got a bright display with black background and white apple logo, so it is obviously able to begin boot process on wall power.

4. After 2 minutes of "booting" the apple logo gradually fades to white and the unit dies. If you turn it off and on again, this sequence will repeat.

So I have three questions...

5. Seems pretty obvious that I need to next soak the logic board in alcohol as others suggest here. Does the progress from non-functional to partial boot-up seem like I'm making progress or is there some potential "fatal" thing causing boot failure?

6. Is battery involved in booting the iPhone-- so that replacing the battery makes sense EVEN THOUGH I am powering from the wall socket and it still isn't getting past the apple logo?

7. iFixit does not seem to sell iPhone logic board replacements. Is there a reason for that?

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the first step would be to replace the battery after another good clean and dry of the motherboard and then reassess. Batteries do not like immersion at all. I'd also make sure that your dock connector is cleaned..you may have some salt sediment on the pins preventing USB power connection. If a new battery and a clean don't alter things or you get a boot but no charge then it may be the dock connector is at fault.

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stonefly さん、ありがとうございました!
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