Nexus 6 Phone won't charge after Water Damage
So my Nexus 6 fell in the water, I was under impression it is water proof, but when the screen started flickering I knew it's not so water resistance/proof, so I decided to turn it off and put in rice, it was so desperation to check if it's working or not, but I still left it in rice for 2 days. After 2 days, when I tried to turn it on, it didn't turn on, so I plug it to power and left for couple of hours for charging, when I came back and tuned it on, it did turn on, but the battery was still showing as 1%. Generally with Motorola turbo charger it should be 100% by now.
So I figured it's not charging and need troubleshooting/repair. I checked Motorola warranty was void with water damage, so decided to do repair myself. First off I tried charging from Qi charger, hoping there should be short circuit in regular charging, but that didn't work either. So I thought maybe battery is gone, so I ordered a new batter and replaced it successfully, but the new battery is also not charging. When I opened the phone I noticed some water stains on the unit next to USB connector, that would be charging unit.
Does anyone know, if replacing the charging unit is possible, what's the part number. Is there anything else I can do? The phone work perfectly while connected to power, no issues in the screen or anywhere else, I have been using the phone connected to power for few days now.
If someone can confirm this phone can't be repaired, I would love to buy new Nexus or OnePlus 3 :-). Any help or ideas are appreciated.