Nikon ProStaff Laser 440 not working (by 3 users)

Here is the address to send your rangefinder for repairs.

• Nikon INC.
• 841 Apollo St. Suite 100.
• Elsegundo, CA 90245-4721
• Attention: Repair Department
• Phone (800) 645-6678.

I had the same issue with my Nikon Laser 800 rangefinder. I sent it in and they wanted $311.00 to fix it so I bought a new one for $300.00 off EBAY. Today I was missing around with my old rangefinder and noticed after I put the battery in I could hear something loose in the rangefinder. There is a little metal tang in the bottom where the battery goes that holds tension on the battery that was bent down. I bent it back up about 3/16" and put the battery back in, now it works fine.