81:
Total corrosion.
   CPU board:
1. Programming new AT28C64B
2. Replacing all connectors.
3. Cleaning.
   PS DRV board:
1. SMD 100R (was finded int. print PCB).
2. Replacing and cleaning connectors.
   Current board: cleaning PCB and connectors.
544: Replacing conectors. Cleaning.
1727: Total but without IGBT.