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My spark went down.....into the water.
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<blockquote data-quote="Virtual1" data-source="post: 20782" data-attributes="member: 4084"><p>Corrosion, especially in salt water, is really hard to fix. It's not the green gunk you see that's the problem, that stuff is easy to remove. It's the gunk UNDER the bga chips that must also be removed, and the electrically damaged chips that have to be replaced that is the problem.</p><p></p><p>Then people will talk about chips that have been "weakened" such that they are likely to fail soon after you repair the unit, which is usually a condition you have no way to identify or predict. And chips that have a DJI firmware or bootloader on them can't just be swapped with stock parts, they have to have the original program uploaded to them first. (you can't upload firmware to an 'empty' chip in the nice user-friendly way we're used to using, it requires a JTAG and special software, and the firmware to be uploaded)</p></blockquote><p></p>
[QUOTE="Virtual1, post: 20782, member: 4084"] Corrosion, especially in salt water, is really hard to fix. It's not the green gunk you see that's the problem, that stuff is easy to remove. It's the gunk UNDER the bga chips that must also be removed, and the electrically damaged chips that have to be replaced that is the problem. Then people will talk about chips that have been "weakened" such that they are likely to fail soon after you repair the unit, which is usually a condition you have no way to identify or predict. And chips that have a DJI firmware or bootloader on them can't just be swapped with stock parts, they have to have the original program uploaded to them first. (you can't upload firmware to an 'empty' chip in the nice user-friendly way we're used to using, it requires a JTAG and special software, and the firmware to be uploaded) [/QUOTE]
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My spark went down.....into the water.