Newcon Optik NVS-33 Troubleshooting,  The scope does not turn on,  Image has disappeared

8. TROUBLESHOOTING

The scope does not turn on

Check whether the batteries are installed properly. Check the charge of the batteries. Replace if they are weak. Do not mix old batteries with new ones.

The target does not appear in focus

Bring the target to the center of the image. By turning the knob 7 (Fig.1) achieve the clearest target acquisition on the screen. If NVS-33 is used with daytime scope re-focus it. Repeat the focusing of NVS-33 and scope if necessary.

If the image still does not seem to be in focus, clean the lenses. They could be foggy or dusty.

Image has disappeared

If the objective lens of switched on NVS-33 are exposed to bright light it automatically shuts off to protect the image intensifier tube from overload. When it happens, turn the unit off, wait for a few seconds and turn it on again.

If the image has been lost at the moment of a shot, check contacts in the battery compartment.

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