Rossman (see link above) shows how to use 91% isopropyl alcohol to find these more effectively. It evaporates more rapidly at the heat source, so there's your s

Rossman (see link above) shows how to use 91% isopropyl alcohol to find these more effectively. It evaporates more rapidly at the heat source, so there's your short. I don't know how well this would work to find shorts in middle layers of circuit boards; I am still learning to identify the broken active components on the surface.