Been there, done that, got the badge.
Latest was my Tek 577 semiconductor curve tracer. Tantalum bead had gone short circuit somewhere - a common problem on Tek gear of that vintage, so I pulled the (pin header) connectors on the power supply, and quickly found the problem. Fixed it. I then plugged the connectors back into the power supply - but got one connector one pin out. I reckon I fried pretty much every bit silicon in the darned thing. When the magic smoke comes out, it is very difficult to get it back in again.
Craig
