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当前版本: Minho ,

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I am concerned about your comment "has a little water damage". Water damage can be very insidious. Although you may see just a bit, there can be extensive water damage under the shields, under the IC's etc. Sometimes the repair is straightforward, other times it can require extensive troubleshooting. The best thing to do first is a complete decontamination, then troubleshoot.
 
Are you an experienced tech looking for detailed help or an avid DIY'er looking for guidance? If the latter, then look for an experienced shop specializing in micro-soldering and water damage repair.
 
=== Update (11/22/2016) ===
 
Generally speaking, coils such as L19 rarely go bad. They are, by design, a short circuit. That said, some corrosion may have eaten through the wire and made it an open-circuit but that should be easy enough to check. You can remove L19 to check it properly. Also check the bare pads to see if they are not shorted to ground.
 
L19 connects from PP_VCC_MAIN to Chestnut. What voltage do you read there?
 
If everything looks okay, including the coil, I would try to replace chestnut.

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原帖由: Minho ,

文本:

I am concerned about your comment "has a little water damage". Water damage can be very insidious. Although you may see just a bit, there can be extensive water damage under the shields, under the IC's etc. Sometimes the repair is straightforward, other times it can require extensive troubleshooting. The best thing to do first is a complete decontamination, then troubleshoot.

Are you an experienced tech looking for detailed help or an avid DIY'er looking for guidance? If the latter, then look for an experienced shop specializing in micro-soldering and water damage repair.

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open