thanks for your quick reply.
I appreciate the clarity of it too, but must find again where I got the wisdom from that reversed polarity in an S8 does NOT damage but only results in non function. Again, thanks. Will report once fault repaired - and what actually blew.
Cheers
Michael

Bill, I have seen you a few times on this forum and you look like you REALLY know what you are talking about on those S8's. Here comes: I have an autoscore II S8 for which I had a battery pack made (reversible polarity because I have a Good Knight and an S8 who use different polarities, I have learn...