These burned things began their lives as resistors. The problem is the pcb is fried too.

Not good !

First step, make pictures and a sketch and then I mill away the burned section.

After milling the burned section

Then I make an insert and glue that in.

Ready to rebuild

I connect the new pads to the rest and cover it with pcb coating

After coating

And this is how it looks like finished

I took bigger resistors and lifted them from the PCB