I bought a PRG-40 from recently, the watch is basically NOS from 2002, looks unused and was sold as needing a battery change. I opened it up, made sure that there was no battery leak or anything, and fitted some new 399 cells which didn't do anything, nor did touching the AC reset. Thinking that maybe it was a faulty set of batteries I bought another set (this time Renata) but still the watch wouldn't work. It sometimes makes sounds when I press the buttons but I've never got the display to come on properly. Its either just blank or extremely feint. As I say the watch appears to have never been used, has anyone got any ideas as to what might be up with it? I'd love to see it working but I'm wondering if somehow the module has died, or maybe isn't the power it needs from the batteries?