Ok, now worry. It just dawned on me that the little metal 'reed' relay sometimes had MERCURY wetted contacts! That's the metal can about 1-3/4 inches log and 3/8 inch square on the rear half of the board. On the blue front 400D card, it's the "animal" with the white 'Y' stenciled over the part number.


When I was young, I was Liberal. As I aged and wised up, I became Conservative. Now that I'm old, I have settled on Curmudgeon.