[JimsCAL]

I inspected it without taking the connectors off. It is in its own little box and looked very clean, indeed. But now that you mention it, I will loosen the connectors and jiggle them around to see if there is any corrosion in there. Thanks again!

Remove them and clean them! Use a piece of sandpaper or a file to make the copper connectors shiny. Don't just jiggle them around.