712: LM339 (corrozion)
Cleaning the PIN's of the sockets PS.
Cleaning CPU board.
Replacing Li3V BR2325

Configuration DIP_SW:
U16: on-on-on-off-on-off-off-off
U17: off-off-on-off-on-on-on-off
U18: on-off-off-on-off-on

1798: LCD 20*4 05464ASSY34753-01G1 repair (corrosion).
1874: U21: int. pin 28. Flat cable MB-LCD was bad. Repair.
Warning!!! Bat 3V insert after applying base voltage.
2035: short ZD 6V2 on input ch_1
Used ZD 6V8.
Programming the DALLAS