These NV monoculars and this Guardian is made by ATN. Normally what happen is the image intensifier tube has gone back to Red Star country. In other words, it gone! The reason why the IR light up is it on a different circuit and has nothing to do with the internal electronic of this NV monocular.
All this IR light does is to provide invisiable light to inhance the image on image tube on very dark/clouded nights. Someone else using and NV devise can see IR light on your monocular and vise versa to you, you can see its IR light. stewbison
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