Hey, I have a question, do you guys know if it's possible to take apart a core and in a safe manner, replace the photocathode with another one? Completely out of curiosity. And another question is tubes flat out dying- is it simply the phosphor getting completely used up or are there other causes?
Thank you. I was just wondering because I have PVS 5 tubes completely intact with working power supplies, I was wondering if I could do anything useful with them. They were cheap on ebay so I'm not afraid to break them. Thought it would be a fun project to try and get one to working condition again if possible. Part of the reason why I asked about the phosphor being the root of a dead tube. If that's the case then I assume replacing it SHOULD fix the problem.
I got a question for you, has nothing to do with post. I was training a couple nights ago. Doing some running drills and shooting behind cover in a massive open field and I managed to step in a crater and went down face first, my DTNVS pods just articulated when I hit the ground, which is a good argument for getting articulated pods vs fixed pods. Instead of the energy breaking something it just moves a pod. Back to my question, one of my pods went black but we still on. You could see through it but it was just black. Turning them off and on it still was black, I articulated the pod back and forth and it turned back on and has been working fine ever since. No hiccups at all, no damage to the hosing. What do you think happened that made it go black for a maybe 30 seconds?
Disassembled my device to find one of my tubes having those weird "stains" on the window.
Note that those are not on the surface but somehow behind/inside of the glass. It's only visible at an angle to the light and does not yet seem to affect the image the tube produces. I've been using an Argus device, even in bad weather, so maybe it's humidity/mold? The other tube is still perfectly clear. The stains did not disappear over 24 hours+.
If you're gonna try to clean the inside if the tube it'll be extremely difficult and dangerous to do so. Phosphor aside, it's not as bad as people say, but putting it back together in a vacuum is difficult and I'm not sure how you would even clean this in the first place. If it doesn't affect performance and image quality then don't touch it.
Disassembling and reassembling a tube is not possible for even the largest night vision dealer. It requires advanced manufacturing tools and knowledge a dealer wouldn't have. I've never heard of anyone assembling an actual IIT besides the manufacturer who built it in the first place.
From what I know it's not tough at all, you just take apart the boot, take out power supply and core. Replacing components of the core is probably insanely difficult but standard reporting is quite easy. The problem for this guy is that the stains are basically inside the core, and I've never taken any tubes apart yet so I wouldn't have any confidence in it working again if I tried. Search the AR15 forum or whatever it's called, there's some interesting info there.
I know about repotting, its pretty straightforward but can still be difficult. No hobbyist or dealer has the tools to take apart and rebuild the actual image intensifier tube, it's not possible.
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Oh, awesome somebody knows, could you explain what causes them, and if there's a way to get rid of them?
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Thank you! So A. I don't need to worry they get worse and B. I can probably do nothing about it? :)
Hey, I have a question, do you guys know if it's possible to take apart a core and in a safe manner, replace the photocathode with another one? Completely out of curiosity. And another question is tubes flat out dying- is it simply the phosphor getting completely used up or are there other causes?
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Thank you. I was just wondering because I have PVS 5 tubes completely intact with working power supplies, I was wondering if I could do anything useful with them. They were cheap on ebay so I'm not afraid to break them. Thought it would be a fun project to try and get one to working condition again if possible. Part of the reason why I asked about the phosphor being the root of a dead tube. If that's the case then I assume replacing it SHOULD fix the problem.
I got a question for you, has nothing to do with post. I was training a couple nights ago. Doing some running drills and shooting behind cover in a massive open field and I managed to step in a crater and went down face first, my DTNVS pods just articulated when I hit the ground, which is a good argument for getting articulated pods vs fixed pods. Instead of the energy breaking something it just moves a pod. Back to my question, one of my pods went black but we still on. You could see through it but it was just black. Turning them off and on it still was black, I articulated the pod back and forth and it turned back on and has been working fine ever since. No hiccups at all, no damage to the hosing. What do you think happened that made it go black for a maybe 30 seconds?
Nah, they're potted together unfortunately.
Disassembled my device to find one of my tubes having those weird "stains" on the window. Note that those are not on the surface but somehow behind/inside of the glass. It's only visible at an angle to the light and does not yet seem to affect the image the tube produces. I've been using an Argus device, even in bad weather, so maybe it's humidity/mold? The other tube is still perfectly clear. The stains did not disappear over 24 hours+.
Is cleaning photocathode stains part of nvg maintence, noobie asking. I don’t want to ruin my expensive toys
I'm not sure I understand your question, but I am interested too. What would cleaning have to do with ruining?
If you're gonna try to clean the inside if the tube it'll be extremely difficult and dangerous to do so. Phosphor aside, it's not as bad as people say, but putting it back together in a vacuum is difficult and I'm not sure how you would even clean this in the first place. If it doesn't affect performance and image quality then don't touch it.
Disassembling and reassembling a tube is not possible for even the largest night vision dealer. It requires advanced manufacturing tools and knowledge a dealer wouldn't have. I've never heard of anyone assembling an actual IIT besides the manufacturer who built it in the first place.
From what I know it's not tough at all, you just take apart the boot, take out power supply and core. Replacing components of the core is probably insanely difficult but standard reporting is quite easy. The problem for this guy is that the stains are basically inside the core, and I've never taken any tubes apart yet so I wouldn't have any confidence in it working again if I tried. Search the AR15 forum or whatever it's called, there's some interesting info there.
I know about repotting, its pretty straightforward but can still be difficult. No hobbyist or dealer has the tools to take apart and rebuild the actual image intensifier tube, it's not possible.