Thanks CALNNC......your photo didn't show up on my laptop view of your original post. I can only see the photo posted by Vernon, and didn't realize it was your photo.....sorry.
Yeh, that is a later model PS1 board, with the battery wires attached to the bottom board via a Molex plug. Nothing unusual there.
Don't know why you blew the resistor on the board using a BCR.....maybe the polarity of the BCR was back-to-front in its manufacturing process????
I'll bow out now, and hand it back to GRJ and Vernon.
Peter.....Buco Australia.