Stop in for a cup of coffee

Let me do some research, send me the part number and see what I can find, the sun stuff is all old school, wires and mostly tubes that prob is all on a board. A schematic for that will prob be needed. I do not even have a modual here to test.
Yes it is a circuit board. I was just curious if you knew anything about them. It could be a handy tester if it worked.