Yukon spartan my pic is not clear light works but cannot get focu
Is it blurry? Focus the scope or clean the lenses.
Is it distorted? Don't know how to fix. Especially if the lens is cracked/scratched etc.
Is it dark/snowy? Put fresh batteries in.
Do you see black spots in the tube? Don't worry, certain amount of these are quite acceptable.
Anyway: It's a night vision for pete's sake. The picture won't ever be like the one on normal binoculars.
on Mar 07, 2012
Yukon Ranger 5 x 42
Hello, let do this. IR illuminator has a montary switch, that is when you push it comes on, and when you release it the IR goes off and it has a red LED to indicate the IR illuminator is being activated.
When you turn you binocular on there will be a green LED activated. This switch is DTSA---double throw sing activated. That is, one throw of the switch it turns on the binocular, the throw will turn off the binocular.
Also within the control panel there is timing circuit to keep the IR illumniator on for ten second the shuts off. Make sure you have the right switches etc. Let me know, then we can brain storm on this matter. stewbison
on Mar 07, 2012
My yukon sightmark sm650 rangefinder
Take it apart by peeling away rubber cover and then remove two mounting screws. Carefully split cases and see where parts are arranged just in case they shift. Laser and lens frequently get jarred loose ESP in a golf cart environment. Place laser and lens if loose back in mounts and gluon in place with superglue or equivalent. Make sure to get no glue on lenses. Reassemble and it should be good to go again. Total time. Ten minutes maybe.
on Oct 04, 2011
Yukon 2.5 x50 nvrs tactical
Hello, don't worry about it. It is HV to the image intensifier tube. The battery
voltage goes through control circuit then to ccfl inverter (here is were dc
voltage is switch on and off and switch dc voltage is step up by toroid coil
that has two input and only two out puts). By impulsing the coil with two
different switch dc voltage on the input this make the current lag the two
different phase voltage by 90 degrees. Here is where the strange noise is coming
from. The toroid coil is encased in iron case and if half of this iron case is
loose, it makes case vibrate so the noise.
Now, the voltage come out of the toroid coil is switching dc (one could call
it AC because that what AC voltage is, it switch between positive to negative)
this voltage is about 300 to 900 switching DC voltage. This voltage will be
applied to a 1/2 wave voltage multiplier (this voltage multiplier with have
anywhere four four stages to 10 stages depend on what the input voltage to
Low the voltage out of the ccfl inverter the more stages the multiplier will
Now, the voltage multiplier will double the voltage per stage to need image
intensifier tube voltage of 12000 to 45000 volts---DC switching or AC what ever
one wants to call it. This voltage will bit you but it doesn't have a lot
current associated with it, the current would be in the 10 to 15 ua (micro-amps)
Now, you know. GB...stewbison
on Sep 24, 2011
Why in total darkness does the unit just flicker
these units need a very small amount of light to work at all, They amplify this small amount of light, with no light at all they have nothing to amplify! the infra red is a source of light so it can amplify that, At night they amplify street lighting or moonlight or starlight etc, hope this helps,
on Sep 19, 2011
Green light comes on but no picture. where is best
Hello, most of these night vision devises are repaired by the companies that
offer to sell and service. It almost impossible to find someone other than the
dealer to repair them. You try Morrision Optic they have big web page on the
Internet. A little warning here. These companies they sell NV devises are not
necessarily the manufacture of these NV devise. Russian make a lot of these NV
devises for US NV companies.
I repair them also but it hard for me to get parts, and I can make other
parts if I can find some dealer that will sell me parts For a 1st generation
cheap Russian image intensifier tube will cost about $175 each and sometime I
can get them cheaper. GB....stewbison
on Sep 11, 2011
Can not focus. The lens moves fine from one end to
Don't IR illuminator in the dark room. Turn on a small light in one of the
corner; such as, a small light bulb. increase ambient light a little at a time
until you can focus. You flooding the dark room with IR illumination which will
reflect everywhere in there. This might take care of the fuzziness in the
on Aug 20, 2011
Not switching on have replaced
Hello, take some switch cleaner--Radio Shack- and
spray just a small amount into the switch. Did you installed the battery
correctly with the polarity be correct. Does the battery compartment have any
type of corrosion?
If this does help then there is something else wron with it. stewbison
on Aug 15, 2011
The right eye is blurey and dirty
Hello, clean the outside of the lens with a good optical cleaner. If you have,
then trying adjusting the focus for each eye. Try both ends of this binocular at
one eye at time; such as, left first, then the right eye until there are
focused. That is if you can focus the optical end and they leave you with the
eye lens for focus. Let me know how it works out. stewbsion
Yukon NVB Viking...
on Aug 15, 2011
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