I have a story like that! Back in my lab rat days, I dropped a scope probe and its grounded sleeve skittered down the back side of a powered-up, prototype memory board (with 240 individual RAMs on it), leaving a trail of sparks. After that it was dead.

Uh oh. We needed that board. What to do? Well, it can't hurt to try. We had "freeze spray" for debugging purposes, so got a bottle of white-out handy (what's that?), frosted up the board really well on the component side, powered up, and quickly marked the devices that defrosted notably quicker than the rest.

Got the solder station lady to replace all those parts and it worked again.

Old days...