Sundown Salt 12k

This amp is using D600K and B631k as the power supply drivers for the fets .

Would the MJE171/181 and the MJE181/182 be good replacements for the drivers ?

Also every single power supply fets blew in this amp causing a lot of soot all over the board .

I know acetone and rubbing alcohol are known to clean this .

Can I also use a mild soap and water to clean the soot from the board and then make sure it’s 100% dry before replacing the parts and powering it up ?