The long holiday gave important time to look through the damage in great detail. The copper traces have all eroded away there are no connectivity between components. The only way forward is to perform point to point wiring to restore back the lost connectivity. After looking through various catalogues, I settled on 30AWG wire wrapping wire that gives the required stiffness, while being strong enough to withstand handling on the board. Thicker wires are not required here as the wires will be handling small signal levels.
First, all the corroded solder was removed and solder joints were repaired. Next I tried out some wiring and they seem to hold up well. The wires were routed as close to the original trace design as possible. Because the semi-conductors are not on sockets, there is a possibility of component damage if heat was applied too long.
I will be doing more of the wiring over the next few days and put up some pictures.
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