Moisture, heat and years are the worst enemies the selenium cells have.
Unless you cover it from the very beginning with some enamel (whiach all manufacturers did at factory), you wonīt get any benefit at all, much less after many years. This problem arises from the cell making, as it is a chemical reaction thatīs very slow but once started, it wonīt stop until the cell is chemically stable again, it is light isnīt anymore able to release free electrons from the selenium. Light adds speed to the process, so the more light the faster it is.
Probably, the camera you bought was stored in a dry and dark place for some time and this caused the cell to stay alive.
The only you can do now is to keep the cell in darkness as long as you can (may be in the nER case) and expose it to light when shooting.
BTW, why no to exchange the whole meter assy? is it far different from the other camera?
Many 35 mm and MF film cameras, some weird cameras... and nothing digital yet!
Last edited by ErnestoJL : 02-23-2008 at 06:28.