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Author Message   Ezio Tinkerer Username: Ezio Post Number: 20 Registered: 09-2006 Rating: N/A Votes: 0 Posted on Tuesday, December 22, 2009 - 01:14 pm:    When the batteries die, the OM-2n will also block all mechanical functions. Replace the batteries, and move the meter lever to "reset". I recently bought a OM-2n that was sold as "junk" and "totally jammed", and all it needed was this procedure.