But what if the smoke came not from a component but from the PCB itself ... He fastened a patch for the hole from some epoxy glue; Araldite is the brand he used, but any two-part epoxy, like ...

A person epoxies the wafer with some conductive glue to its place on the board. Surprisingly, alignment isn’t critical. The epoxy dries and then the circuit board is taken to a, “semi ...