Port/Mother board is corroded, can I repair this to salvage my phone?

My Galaxy S III stopped working. It would not acknowledge being plugged in beyond flashing a quick "charging" picture, though never charging or lighting up in the corner. I placed a fully charged battery in the phone and beyond flashing "samsung" across the screen it would not turn on. I took it into Sprint and they showed my that the port on the mother board was corroded and that this would need to be replaced. Prior to ordering a new motherboard, which my husband would be able to do the technical work to replace it, I was wondering if it is possible to clean the corrosion and still salvage my current phone?

https://lh6.googleusercontent.com/-mrzLX...