@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