Looking to buy a used pair of pvs 7 nightvision goggles and owner says there are a couple of small black spots when you view is this a cause for concern and what else should i look for ?

Please do so

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

OK, is the IR luminator working with a red glow. Don't look at it. Some these IR luminator have a adjustable lens that one can screw out or screw it in. If the IR isn't igniting then the LED could be bad , broken wire, or bad switch. stewbison

Hello, there two things that can bad. One is the oscilator with voltage multiplier or the image intensifier tube. Send to Morrison Optics Co. GB....stewbison

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You probably have hit the effect button and selected negative, to get it back hit camera then menu on the right side, if menu doesn't show up hit the right side anyway and it will appear. Above it should say negative use the arrows at the top to change it back to normal.

Well, there's no telling because Bushnell is not telling. It could be due to it being 'dated' technology and as it is a 1stGen NV they have newer tech. available with other styles. It never got rave revues in the first place. If you can afford it, look at at least 3rdGen NV, even 2ndGen. is good for civilian use. Stay away from the russian junk, almost all of which is 1stGen. But USA if possible and at least you are buying quality which if it needs service, you can get it.
Good luck. :)

you could replace it yourself by buying the part or bring it to a service centre. the website should list them for the region you want.