My nikon prostaff laser 440 rangefinder just quit working one day in the stand. it worked fine the night before and now will not give me the range. everything works but it will not give me the distance. any ideas?? should i throw it away? its about 6 yrs old.

Nikon Prostaff 3 Laser Rangefinder

You would obviously expect something superior from Nikon. Well, this renowned company will not disappoint you. They have maintained their expert quality, but that does not make the product expensive. Nikon Laser Rangefinder gives you a crystal-clear image at a very low price.
With the launch of Nikon Prostaff 3, two categories of rangefinder seekers have got something to rely on for their ranging needs. Golf players belong to one category while others who want to get top features but maintain a budget belong to another category. Many hobbyists and professionals are getting keen on using rangefinders. It enables hunters and golfers to have a smooth field of view. It gives you enough range and brightness for clear sight. Nikon Prostaff 3 Laser Rangefinder has created some buzz among outdoor lovers. The multicolored display is adequately bright and able to show distances in meters and yards.
There is a continuous measurement mode that facilitates multiple measurements without requiring users to make any additional adjustments each time they switch targets. This mode helps users to gauge the accurate distance between particular objects and their current positions.
The built-in slope compensation deals with the changes in slope heights almost accurately. Making precise measurements at different angles up to 89 degrees becomes a breeze.

You may download a copy of the manual here.

i can't get my new 440 range finder to power on! changed batteries 3 times

I didn't find the Prostaff laser 440 rangefinder on the website for Nikon.com, but I did find the 550 model. The specs follow:
Specifications

• Measurement Range 11-550 yds
• Increment Reading 0.5/1 yds
• Magnification 6x
• Angular Field of View (Real) 6°
• Angular Field of View (Apparent) 34.9°
• Viewfinder Display meters/yards
• Eye Relief 18mm
• Diopter Adjustment +/-4°
• Power Source 1 CR2 Lithium Battery
• Size (Length x Width x Height) 5.1 x 1.5 x 2.7 in
• Weight w/o Batteries 6.3 oz
• Objective Diameter 21mm
• Exit Pupil 3.5mm
• Supplied Accessories CR2 lithium battery.
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I did not read that there is a recalibration for the unit, although a consumer might expect that. Has it ever been dropped to your knowledge?

http://nikon.com/products/sportoptics/support/index.htm

The above link has contact information for service of the unit via telephone numbers.

I bought a new one.

Harbor Freight has a kit that has them in it and most industrial tool supply companies have them. It's a security screw. there are many kits availably with an assortment of bits in them. Drill Master has a 100 piece kit that's pretty cheap. Item#91310

Remove battery before putting away rangefinder

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.

I just got mine to work. It was doing the same thing. I guess I re-set it. I figured there had to be some way to re-set it. So I pushed the mode button and the power button simultaneously for 30 second. Then it worked! Wooptidoo :)

Had the same problem... Pushed the mode button and the power button simultaneously for 30 seconds, then it worked again...