Question about damaged JDM-050 motherboard

I got an old DS4 motherboard that has been scratched badly. The previous owner told me the controller worked before he tried to fix a stick drift problem, hence the scratches. I tried to assemble the parts together and get some LED blinking, but the controller did not work.

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I'm quite inexperienced in this, so I hope someone could help me take a look if this board could still be restored to working condition or if it is totally dead. I found that a component next to the left thumbstick (zoom-in pic with arrow) might be deformed/melted. Maybe it is also a problem?

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Many thanks :D

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