Hi
I guess you're more concerned about the actual green residue from the battery leak. If the machine is working fine then I guess you're hanging on by a thread. The board needs cleaning in this area. But it is a delicate issue. Do you have any way of posting a picture of the damaged area ?
Certainly worth restoring the machine...
As to the 2000.. this has a battery
As to the 500.. this may have one in the trapdoor. Also if A500+ then this too has a battery.
scuzz
http://www.commodore-amiga-retro.com