I removed battery
I cleaned that area with lemon juice and vinegar
I joined one broken trace and checked if there any more
changed dennise and paula sockets
sorry for bad pictures
here are some pictures from battery area
http://retrocu.blogspot.com.tr/2014/10/amiga-3000-restoration.html
My comment comes a little too late to help you but you should never try to clean up acid-damaged components by adding more acid. Vinegar and lemon juice are pretty strong acids and can damage components on their own, without the help of the acid that has already drained from the battery. You should have used baking soda to neutralize the acidity.
