NEVERMIND.

It was those battery contacts(actually contact-the one which joins the spring to the positive).
Modified By John Francis on 2/2/2005 at 9:43 PM

Doesn't the spring push againist the negative (flat) part of the battery?

I think the sheath is insulated as such that even though(if?) it's metal, it shouldn't cause a short.

I just think the spring doesn't always contact the positive terminal very well.

They(the spring) was never intended to contact the positive.

It's a problem I run into often, but when it happens the unit won't turn on(its always been right after changing batteries).

This time, everything worked great, I got my sessions and all in, but when I got back to the office, the unit wouldn't turn on and OF COURSE, this was right after I read the post about the other unit that wouldn't turn on.