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원문 게시자: Minho ,

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This could be caused by either a partially disconnected (or bad) battery or a damaged charging circuit. Even though it didn't fall from high, if it lands the wrong way or on multiple occasions over time, then this kind of problem can occur.

I would encourage you to open your device [guide|30962|following this guide]. Be very careful of the screws and their proper placements.

Do a good visual inspection of the logic board and the connectors. Look for missing parts, especially near the battery connector. There are critical components there that are tiny (0.5 x 1 mil, or thousandths of an inch).

You need to replace the battery with a known-good battery. Buying a battery does not make it known-good as there are many poor quality batteries on the market. iFixit sells good quality batteries but even they are not 100% (sorry guys!).

If the battery doesn't solve your problem, then changing the Lightning Port is next. It is between the battery and the charger, so to speak, so it could be causing the issues. Again, there a lots of low-quality "small parts" on the market and buying it "new" does not mean it works.

If all of that does not solve the problem, then you probably have a logic board failure that was caused by the impact. In that case, you will need to find an experienced micro-soldering repair shop to troubleshoot and repair the problem.

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