Oh, geeze, sorry. It's pins 1 and 4. I need an editor. Used to be a tech writer, now you know why I was invited to try other careers :-) Possible you installed the caps backwards but the Tantalums would probably tolerate and work OK anyway, at least for awhile. Wouldn't likely be intermittent. The black rubber seals were the positive end. \\ Mark ----- Original Message ----- From: "Matthew L. Walker" <mwalker@xxxx> > Ok I am a bit confused. In the original info on the DMCNEWS site you say > between pins 1 and 4 - in here you reference pins 3 and 4. Could you > clarify please. ... snip