@spaceman88
I'd agree that battery corrosion is the likely cause of damage. This typically affects PCB tracks, vias and U891; part of the fast memory bidirectional bridge. In bad cases, the SIMM sockets themselves can be corroded to the point that they require replacement.
I can repair these fast memory problems for you, including repairs to the RTC circuit.
Email me for an estimate:
http://amiga.serveftp.net
