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Author Message   Nparsons13 Tinkerer Username: Nparsons13 Post Number: 23 Registered: 09-2010 Rating: N/A Votes: 0 Posted on Sunday, July 22, 2012 - 09:32 am:    If neither the exposure circuit nor the battery test circuit is working, the problem may be with the connection at the top of the battery compartment, underneath the rangefinder. The white - (negative) wire soldered to the battery spring wire where it comes through the end of the compartment may be corroded or broken. See the photo at http://www.flickr.com/photos/nparsons13/7622332868/in/photostream. Sometimes the power wires can be corroded for some distance up their length. One of mine required replacement of the entire wire from the battery terminal to the circuit board. You'll need to remove the rangefinder to check the wire and the joint. The rangefinder is held on by two screws, one at the front left corner and the other on the inside near the rear lens. Be careful not to overheat that solder joint if you resolder the white wire. You can easily melt the plastic of the battery compartment and loosen the spring wire.