Any thoughts on this tube. In reality it looks like TV static, the video has some strobing that is just a video artifact and not real.

whats the fix?

you need a new tube. you can try adjusting the potentiometers in those holes on the top, but it is likely a lost cause.

i'm not against repotting, I bought it broken. Just trying to find any info on repotting is seemingly impossible

edit, I moved the pots 2 turns both ways. no change, left pot would turn off unit at 2 turns CCW.

I think I read a few years back that wide open static like that is a essentially a wire grounding out or something along those lines. You might be able to just repot it using the same module and PSU. However, you need a vacuum chamber, slygard polymer and a new boot. It can be done, but I've never done it.  With all of the other crap I've attempted - I should have repotted something by now, but I don't own a vac chamber, though I could probably make one with a brake bleeder. KDSG repots tubes. I think its ~$500. Not knowing the clarity of that module, I'm not really sure it would be worth the cost.

Wow, this place has changed while I was away...

You can degas the elastomer by sticking it in a large syringe, capping the nozzle and pulling on the plunger... It pulls all the gas out of the mix very effectively, and you can inject degassed elastomer straight into a jig to hold the tube.

A bit ghetto, but if you cut the elastomer open later, it's actually very effective.

David.

Perthite not just a form of feldspar

Yeah lots of changes. Its rough keeping track of all the various nv forums now and it feels like a lot less traffic, since threads are spread over more forums, now. I am still deciding if i like it or not.

That is a slick move to degas the polymer.

Hope all is well with you and welcome back.