[nmap]

Quite some time ago...about 25 years, or perhaps a bit more...a purchased an AN/PVS-4 with 2nd gen. tube.

It's been treated gently over the years, and used only rarely. Unfortunately, a few nights ago I took it out of its case and it wouldn't work.

The batteries aren't the problem - I never leave batteries in, and I installed fresh batteries. It still didn't work. There is no physical damage or corrosion, since it is treated carefully. There was no scintillation from the tube.

I found one business on the web that repairs the device - Night Vision Depot. They seemed like nice folks when I called them, but that's all I know about them.

The problem could, I suppose, range from a switch issue to a failed tube.

Any thoughts about someone I could contact for diagnosis and repair?

Thanks as always for your thoughts.