the changes you made on my are these maybe it will be useful to someone
My FG V54 had these components to change
U15-U11 = 5CAN41KHCT245
U14-U9-U19 = 1H46LS14
U17-U8 = 74HCT125D
U23 U16 = EL967 st
U20-U22 = "MAX485 es +
U10 = AB2C250
U12-U21 = LM393
U18 = HEF4011BT
change u11-u15 with 74HC245D
change u9-u14-u19 with 74HC14D
change u16-u23-L9637D
change the two rel? big with the following : G6AK234P-ST-US-5VDC
change the rel? small with the following : G5V1-5VDC