A couple years ago, I obtained a pickup truck load of vintage airport control tower equipment. There are few boards, or no boards in most of the boxes, but a few of them do have analog components boards. The problem is the two hundred pound transmitters/etc which are filled with cracker box size sealed components, basically transformers with some controls sealed in a heavy waterproofing wax/tar. While there is some wiring going from the switches on the face to the component boxes, and heavy solder connections, no way it is feasible to strip the units. I'll post pics of the outside and inside of the units later today.
link to previous post on those boards
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