I have an Amiga 3000 motherboard that has suffered battery corrosion. I've got a broken resistor, broken traces and some non-continuity on many of the through-holes. These through-holes are small and I'm not sure what the best method is to restore continuity through them. Can expose them and hit them with solder or do I need to feed a small strand of wire through and solder the wire to the traces? Any suggestions?
The following is a link to a larger/higher res version that better shows what I'm up against. Hopefully the link works.
https://drive.google.com/open?id=1e3lYLK7IdmgYRFowHqzNkv1PriY828M2
