One of the 10 Ohm inrush limiting resistors burned up. The boostrap diode and its resistor supplying the MP020-5 were destroyed as well as the output filtering and load resistor of the main DC rail. The PCB showed arcing between the boostrap diode and the power supply diode where I had to dig out burned epoxy and repair everything with UV curing filler. The MP020-5 switch mode regulator survived the ordeal.
You can see where the water has done a number on the solder mask layer of the PCB. I repainted all that with new solder stop lacquer.
I didn’t take pictures of all the vias that corroded and opened on the back side. I used mag wire and fixed them all. And one 201 filter capacitor next to the memory chip on the logic board corroded off and had to be replaced.
Enjoy 