Question about Nikon Optics

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Night vision quickly fades out after unit is powered on. If unit is turned off and then on, it will work for several seconds and then fade to black again.

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  • msharak Oct 04, 2009

    rigel optics d-2mv

  • msharak Oct 04, 2009

    Batteries are duracells dated to expire 2013. I have replaced them with new ones twice. Thanks

  • msharak Oct 04, 2009

    Also wanted to add that the IR illuminater doesn't seem to be effected.



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Im assuming this has batteries,ethier rechargable,or alkaline replaceables,without specfic make and model,all i know so far is nikon night vision,having said that rechargible,battery may not pass load test even though appears to function and charge normally,if this doesnt apply ,bad solder joints or connections on main circuit board,would be the next thing i would inspect, ,you say it works,then it doesnt,as long as power supply is constant and capeable,circuit failure is most likely,power transistor,diode,capacator,ect.,without schematic,visual inspection,and limited,multimeter testing ,hopefully will give you some sign of problem.sorry for the vauge answer,if more tech info is avialable post comment and ill try to help further,hope this helps,aloha from maui todd0708

Posted on Oct 05, 2009

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Quite simply it sounds as though you've got an outdated battery. They will show a full charge and just after a few minutes use they go dead. This also pertains to rechargeable batteries

Posted on Oct 04, 2009


Please specifiy the make and model. Thanks..

Posted on Oct 03, 2009

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Volume fade

Check to be sure there are no speaker wires touching ground, and that the wires are connected in phase to the head unit.
Front Speakers 5 1/4" Doors Left Front (+) Green Left Front (-) Black/White Right Front (+) White/Red Right Front (-) Black/White Rear Speakers 6" x 9" Rear Deck Left Rear (+) Pink/Red Left Rear (-) Pink/Blue Right Rear (+) Pink/Light Blue Right Rear (-) Green/Red

The symptoms you are relaying definately sound like an internal amplifier problem. It is fading in and out for a reason - usually due to heat.

Have you had the radio bench tested (seperate from the car) to eliminate the car as being the culprit?

Since the radio was run with damaged speakers originally, the output or amplifier power supply on the amplifier may be bad.

As an alternative to repairing, I would suggest investing in a small 2 channel amplifier to power the speakers.

The radios claim 50W per channel, but in reality give 12-15W RMS power.

A dedicated amplifier with built in crossovers and gain adjustments will prolong the life of your speakers and add to the tonal qualities of your new speakers. Instead of turning up the volume on the head Unit, and sending out a distorted signal that will blow your speakers, an amplifier will give more CLEAN power to them, so it will be louder at a lower volume setting.

This will bypass the internal amplifier on the radio, and send a Low Level signal ONLY thru a set of RCA cables.

Good Luck!!

Jan 10, 2009 | Car Audio & Video

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