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Degassed tube how to fix? repair?

How do you fix or repair a Degassed tube?

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Do you mean de-purged tube or de-gause tube? Image intensifiers are not like CRT where they have a gausing problem. If a spot is burnt into the image intensifier, it unfortuantely is permanent.

If you mean de-purged (gasless), this can be done by a reputable service/repair workshop with nitrogen.

Posted on Mar 25, 2009

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I dont think there is a way to repair a degassed tube. Generally once they ar compramised that is it for them.

Posted on Sep 09, 2008

  • drchocobo Sep 09, 2008

    that is, if they are like most other vacume tubes

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The illuminator is not working, what do you think might be the problem. Thank You Ken


Hello, what illuminator are you referring to here. The image intensifier tube, or the IR illuminator?


I am suspecting it the those Russian manufacture image intensifier tubes I am also accusing them....Russian NV manufactured of installing electronic destruction timer in the their image tube.



I fairly sure that you Famous Trails FT1200 NV Monocular is about five years old. Five years is the average on the image intensifier tube life span.



I have a few extra Green Russian Image tubes there not new but the will work but for how long---who knows...



I would call Famous Trails NV Optic company and see what they will to charge to fix you FT1200 monocular. There good possibility they will tell you that they can't repair you FT1200. But they will take it for a trading on a new model (made in Russia) for a few---hundred dollars more.



If you fill like not do this then auction it on eBay. I need some parts or if you want it fix then send it to me. drawbridge21@q.com That my email. What ever you do I wish you lots of luck in your endeavors. GB...stewbison

Sep 21, 2011 | Famous Trails FT1200 Monocular

1 Answer

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 now...it'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

I have a ITT nightquest that is around 12 or 15 years old and stopped working, i replaced the batteries and when i press the power button all i get is a random red flash of light,,, any ideas of what is...


Jello, It a very nice night scope then and even to day, it American made. Those ITT 1st generation image intensifier tube have a life of about 10K hours+. If it had a few exposures to bright lights this will take a way from the life of the tube.

The only way to trouble shoot the problem is to take it parts. ITT will not provide any information on this Nightqest NV devise. You'll need someone the knows electronic in depth, troubleshoot solid state devise, and make HV ingitors for the tube in thousands of voltage. The problem could a simple passive component to the image intensifier tube has quit. Expensive to repair if the tube is bad. stewbison

Jun 25, 2011 | ITT Night Vision & Thermal Optics

3 Answers

Night owl / night vision


Unscrew front lens front of intensifier tube should have an even bronze tinted coating on glass if it is grey and blotchy the tube is degassed. common fault with this model nightvision
wayne

May 30, 2008 | Night Owl Optics Aero NOAR25 Monocular

1 Answer

Nite Vision scope


Unscrew front lens front of intensifier tube should have an even bronze tinted coating on glass if it is grey and blotchy the tube is degassed. common fault with this model nightvision
wayn

May 12, 2008 | ATN Aries 390 Paladin Weapon Sight

1 Answer

No Picture


image tube is degassed needs to be replaced

Apr 13, 2008 | Bushnell Guardian 26-4202 Monocular

2 Answers

Pitch black


Unscrew front lens front of intensifier tube should have an even bronze tinted coating on glass if it is grey and blotchy the tube is degassed. common fault with this model nightvision
wayne

Feb 26, 2008 | Night Vision & Thermal Optics

1 Answer

Powers up, but does not illuminate.


tube is most likley degassed remove lens and look at front coating on tube it should be evenely bronze tinted if it is grey and blotchy tube is degassed and has to be replaced
wayne

Jan 21, 2008 | ATN Night Scout Binocular

2 Answers

Tasco nv 356 night binoculars


Check the HV to the tube and see if you can see any discolouration or spots on the tube - they often indicate tube failure. Many binoculars use the one power supply for both tubes as the current demand is very low. Often, one tube operation indicates tube failure, but a wire or connection could be at fault.

Nov 27, 2007 | NewCon Optik BN-5 Binocular

2 Answers

Amt aries mk238 model#500433


I have a Amt aries 208 I have changed the battery but i cant get to do any thing . and i have lost all of the manuals can you help.Ed.

Nov 13, 2007 | AMT Datasouth Aries MK238 Weapon Sight

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