Question about Weaver NightView (849397) Monocular

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Power switch failure

I'm on my third scope,just got it back from weaver on warranty repairs to the power switch-each time i've had the same problem, the power switch melts,when the batteries are low and it is left on(as in sat it down and thought it was off or in my case the confirmed id of a bail jumper in a fluke situation of stepping outside alone to got a forgotten pack of smokes in a car parked not ten feet from us,when we were on a quick "look and see" bang 5mins work 10,000 grand- 10 mins later push switch to turn off unit and it was mushy, i think that it is designed as a sort of fusable link,so that it protects the unit as it tries to draw more current as volts drop-i've yet to call weaver,even though they have been nothing but kind and very helpful with prior replacements-i'm taking it back to place of purchase,i can't place my saftey in this product,if there is something that i'm missing please inform the uninformed-i like the unit when it works marque99

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SOURCE: unit does not turn,I think it needs a

Jemenie!!! Apparently Weaver doesn't know what to do. Call the big boss and give a ear full.
It could be a bad switch, broken wire, bad image tube, faulty ccfl inverter, multiplier. Without some troubling shooting it, it is impossible to tell. stewbison

Posted on Aug 06, 2011

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Installed new batteries and the unit will not power up. Check polarity and everyting is correct.

Hello, there really nothing I can tell you until I get some clarification on you Bushnell NV audio amp. If it is new then send it back. Did you fill out your warranty card? Also, since they call it a audio scope 26-300 do you need to use ear phones with it? GB...stewbison

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I have an ATN MK238 that will power up, like the power LED will come on, but the screen will not power up when you look into the reticle. I checked the tube by unscrewing the front lens and it is a uniform...

Hello, it has a none functioning image intensifier tube, or shorted ccfl. All the electronic components are manufactured in Russia. Does this let you know what wrong with you ATN MK238 scope's cheap. I don't fix these ATN MK-258 anymore, it to hard to find parts. ATN is no help, they won't sell parts. It will have to be sent to ATN for repairs at approx. $200+ for repairs. I do have a couple of Russian image intensifier tubes, that work. The last MK238 I repaired, I had to build a ccfl (cold cathode flourscent Lamp) inverter, replace the coil and voltage multiplier, and fit in a confine space with insulation from electric arcing.

Here is infor for you. The ccfl can be purchased. They are companys that will make you a voltage multipliers. So, here is information: voltage to ccfl (6 volts) then the voltage goes in the inverter
to convert it switching DC voltage (5.5 volts). Then the coil (transformer) step it ot about 930 voltage to the voltage multiplier (which has four stages---the first stage with double the voltage to 1860 volt to the second stage which double it, then third stage which double it, then finally to fourth stage which doubles the third stage to about 15KV (hight voltage here, it will bit ya here, but no current--amps.) this will the cathode on iit, then light up the tube 18mm film that is coated--it will turn green)

Now, this the simplies way of tube operation, it more complex than that. The power supply for this Russian image inten. tube is sealed in dielectric jell, and the voltage multiplier is sealed in epoxy with the tube are none repairable.

There are quit a few other NV companies, that use Russian tubes and electronic. They cheap but functional. The bottom line here is the profit. Don't get me wrong here. There a few Russian compies that make some very good gen 2 tubes. If you can replace the tube will gen 2 tubes and powere supply. I hope this helps, Richard.

Jul 09, 2011 | ATN American Technologies Network Aries...

1 Answer

Power light turns on, Infra red illuminator works, cant see anything in scope. Reticule doesnt light up and no vision through optics. New battery etc.

Hello, bad image intensifier tube and possible ccfl with it coil. Major repair on MK238 scope. I think they make a generation 2 tube for this scope like 350,360,390, and 410. Call AT ATN. stewbison

Mar 04, 2011 | AMT Datasouth Aries MK238 Weapon Sight

1 Answer

Unit does not turn,I think it needs a switch,looking for some place local for repair.Returned to weaver twice problem still exists

Jemenie!!! Apparently Weaver doesn't know what to do. Call the big boss and give a ear full.
It could be a bad switch, broken wire, bad image tube, faulty ccfl inverter, multiplier. Without some troubling shooting it, it is impossible to tell. stewbison

Feb 26, 2011 | Weaver NightView (849397) Monocular

1 Answer

My atn mk-258 fell 3 feet to the ground. Now, power light works, all three ajustment lights work. But no green scope or white weapons site. What is needed for repairs and who would do the repairs?

Sorry, You probly disloged the micro plate in the image intensifier tube or brok it. Very thing in scope MK258 is manufactured in Russia. I have two or three of these Russian image tube, they are all generation 1 and cheap. About the only thing they use of scope shock is a thin rubber colar around the image tube. There is a good possibly it destroyed the image tube, sorry. stewbison

I am on face book Richard with a picture of one ugly dude.

Feb 06, 2011 | ATN Aries MK-258 Weapon Sight

1 Answer

Scope worked it was on a 22 lr shot it twice and the scope went black and will not light up at all now

Sir, there could be number of things that when south on your scope. Don't ask ATN for help. They will tell you box it up and sent to them. They will give a ruff estimate on what it going to cost to fix it. Another thing that they will tell you after they have received your scrope. "The scope is not worth the money to fix it.... You'll have more money invested in older model. This is what ATN will do: We (ATN) take in for a trade on a newer scope. We will give you excellent price for your none functioning scope" Watch it

I have repaired some of these factory repair jobs. Some times I wonder if they really repair them. Normally, it could be broken wire, bad switch, I am thinking this a Generation 2 image tube in it. I am also sure it has smart electronic in it (small microprossor). Self controlling gains, auto focus, auto shut off, low battery indicator.

You can unscrew the lens and look at the image intensifier tube and see what color it is. Does it have a thick black ring around the image tube? If it does, then this is the voltage multiplier for the tube. Operation voltage will be from 12KV to 18KV and some of the other tubes that cascaded in 3 stages will have operating voltage of 45KV in the form of switching DC volts off/on/off/on.-- It similiar to AC voltage, but not quit.

If you really take this scope apart. Draw diagram of the printed ciruit boards (ruff drawing, don't put the components on it just where the wires are solder to the boards), label the wires and indicate where on the printed circuit board where each wire goes. This also implies what on the other end of the wires. Thay way if wires brakes your'll know where it goes. Especially be carfully. If you get shocked, it not as bad as a spartk plug wire. About 1/10 the value.. I could continue, but look for bad correction, cold solder joints (they will kinda gray with no shin), check the switches. Best of luck, Keep you rubber in a cool dry place and get occilators in the exhaust tuned. Weld a steel plate on the valve covers that way a push rod want kill a spectator in the stands. stewbison-

Jan 24, 2011 | ATN Aries MK6500 Weapon Sight

1 Answer

Hot batteries melted battery carriage and power supply wire

It can't be repaired It probably got the ccfl inverter also. Sorry. What are you going to do with it.

Jan 17, 2011 | Weaver NightView (849397) Monocular

1 Answer

It's like new and hardly used. It starts to come on and you can see the green in the lens, then it goes dark. still shows power is on. I've tried fresh batteries with the same results. Where can I get it...

Hello. you do know that NV devise are to be used during the black hours of the night. Any type of bright lights will burn out the multi-plate coating. It only take a few time and the image intensifier tube is gone. The generation 3 and 3+ image tubes have auto gating that is, if the sensor detects bright lights with shut down. Now, this help but bright light with even the generations of image tube. It will still destroy them.

To get repaired you can send it to ATN in California. Just for them to take a look and see what wrong will $100+ plus shipping both ways and the cost of parts that is, if they have the parts.

What they will try to do, is that they will take your 258 scope in for trade. Then have you up grade from this 6 year old NV scope to a new model. They could also tell you it's not repairable.

Now, I have repair a few of the MK ATN NV scopes, and all the image intensifier tubes are manufactured in Russia, and there is good possibility that the hole scope was manufactured there.

The Russian manufactures will just print the American Vendor name and logo on the scope, monocular, binocular that they manufacture. You send to me and I will take look at and try to find a new image tube for it. GB...stewbison

Nov 22, 2010 | ATN Aries MK-258 Weapon Sight

1 Answer

Name of scope . Yukon . Problem : I tried to replace a battery in the dark. Removed the wrong part by relative force . Scope damaged. Two tubes on the front of the scope one is the battery tube and th

I would strip the wires as carefully as I could and get them back together, get the 2 AA batteries back in there, and see what happens. Then go about making a permanent splice in the wires and getting the lens to stay on there, or ship it back to Russia for repairs. Or find somebody to do it. I'm sure it can be done. Hope this helps.

May 24, 2009 | Zhumell Yukon NVRS Titanium 2.5x42 Night...

1 Answer

Scope won't power up after storage

Make sure that there is NO corrosion on the + and - terminals. If there is clean it with a swab dipped in Vinegar, then swab it dry with a dry one. Ther's nothing in the unit that you, yourself can repair unless you are an electronics whizz.

Go to; they are the source for this brand. They also have 'down loadable' 'user Manuals' but I'm not positive that they have one for the FT600, but you won't know unless you ask them.

Good luck. :)

Nov 01, 2008 | Famous Trails Titan FT600 Monocular

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