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...after cleaning and careful drying we can begin to remove all affected parts from the board.
#amiga
#a3000
#vintagecomputing
#retrocomputing
#batterydamage
#restauration
#electronics
I will update my restauration as I go... @codewiz is also restoring an A3000. Worth watching as well:
@trebroNdotnet Thank you for sharing! How did you desolder the Paula and Denise slots? I'm about to do it too.
Do you have PCB schematics and Gerber files?
@codewiz Desoldering: add fresh solder, snip the sockets to smaller peaces, "lots" of heat. Desoldering gun did nothing here... Main goal is to keep the pcb alive!
PCB-orientation: https://retrobox.it/files/pcb/Amiga_3000.html
Schematics: http://amiga.serveftp.net/Schematics/A3000_schematics/A3000_R9_schematic.pdf
Gerber: http://www.reamiga.info/webfiles/R3000/A3000Rev94.zip
@codewiz ...as long as we plant a new chip meadow everything will be fine 
@trebroNdotnet I also pulled out most of the chips to root-cause the instability.
It's amazing that DiagROM still works with such a lobotomized board. You only need Gary, one of the CIAs and 1MB of Chip RAM.
After this, I strongly suspect the ZIP RAM modules made things worse, but I'm not 100% sure.
@trebroNdotnet
The Z3660 is a great debug tool, but also introduces weirdness: some address lines are now driven at 3.3V, and soft reset no longer works (/CPURST held down forever).
Without the Z3660, the board red screens and reboots every few seconds. I see stuff on the address and data bus, and I don't have a suitable programmer to dump the ROMs.
I bought a Kickstart 3.2 ROM set from Irland, but it will take a while to arrive.