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Considering many vendors who sell parts are going to have a minimum order, Night Vision Depot for example has a 100 dollar minimum; you might consider trying to repair your old one or fabricating a new one. Otherwise checking on Ebay for one. On the other hand if you can fabricate a new one easily, you might consider being a vendor of that part too as you would not be the only person to encounter that dilema.
Letto, This PVS-7B has a generation II image intensifier tube in it. The image tube is manufactured by ITT liton company. The only way to fix this wonderful NV devise is to send to ITT Night Vision Company. They are listed in the internet. Unless you can find someone to work on it, but the really need to know what they are doing. stewbison
Hello, have you or someone else pointed this night vision devise at bright lights, street lights, head lights. If so, maybe the damage has/hasn't alread been done. STOP. This PVS-7 goggles with ITT image tube with generation 2 or 2+ or possibly generation 3 tube. The devise is an American made unit, and the best in the world. Nobody can compete with the USA on NV. They sat the standards on Night Vision.
Have you replace the 6 volt battery? Get the goggle in a darken room then turn the switch on. see if the 25mm plate will turn green and stay on. But first replace that battery. Therefore, if this test works, then never and I mean never shine NV devises into bright lights, it will destroy them every time.
PS. send me another message and let see what happen. stewbison