Actually the story begins with a clone of the C35 I have - the Mamiya 135. This is not very well known, but I think maybe superior to its C35 brother (gasp, horror). It feels better built, solid, and the lens gives up little if anything to the Konica, although the body is slightly larger. Anyway. I picked the Mamiya up yesterday and the meter was dead. I checked the battery compartment (1.4 V zinc-air, size 675) and sure enough there had been a leak. I did the whole vinegar thing, waited, sandpaper to clear the contact, waited, new battery and...nothing. For some bizarre reason I then picked up the C35 and also no meter. No battery leak though. I put new batteries in both. Nothing. I went out and bought a new pack of batteries. Nothing. So here are my questions: (1) Is there something about this battery type I should know? (2) Is there any useful info out there on opening these babies up to check for corroded wires? (3) Did the Konica die in sympathy for the Mamiya?