over-voltage protection
I made the same mistake yesterday. Painfull indeed! I will never make that mistake again... Ali seems to sell spare motherboard but over 200 dollar = nogo.
I did find threads on overvoltage on older Gopros than hero 3 and there only 1 capacitor needed to change. On the hero 3 I can clearly see a blinking (overheated) spot on a smaller IC block...
Is this a good question?
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@Dave, any chance you could post an image? I can convert your comment to an answer which would allow you to add an image. I'd like to see what the IC looks like. To add images to your question, use this guide Adding images to an existing question
by oldturkey03