Yeah, I was working on one earlier which was in similar condition (partial battery explosion)... until I made it worse 
I stupidly put my new SMD rework wand thingy over that area and put a big scorch mark there, basically destroying the traces for D1 and D2 in the process. I'm sure that the connections can be retraced and rework wires ran to new transistors, but still.... the stupidity!
Lesson learned: don't hold hot air in one spot too long (duh!)
</rant>
Anyway, best of luck there, oP! I might be able to apply what you're doing to my board, but I fear that there might be other stuff wrong (it simasimac-ed right off, so I don't know what else could be wrong.
Probably best to write mine off as a parts board at this rate, since I (luckily!) have a couple spares available to take its place.
c

I stupidly put my new SMD rework wand thingy over that area and put a big scorch mark there, basically destroying the traces for D1 and D2 in the process. I'm sure that the connections can be retraced and rework wires ran to new transistors, but still.... the stupidity!
Lesson learned: don't hold hot air in one spot too long (duh!)
</rant>
Anyway, best of luck there, oP! I might be able to apply what you're doing to my board, but I fear that there might be other stuff wrong (it simasimac-ed right off, so I don't know what else could be wrong.
Probably best to write mine off as a parts board at this rate, since I (luckily!) have a couple spares available to take its place.
c