I've got two bad 6sn7s. What do you personally do with your tubes once they go badly microphonic? Do you just throw them away? Is it worth it to try to open the tube up so maybe I can check out the insides, as an educational experiment?

I'd be careful opening up tubes as there are probably some nasty gases in there.

I'd be careful opening up tubes as there are probably some nasty gases in there.

Good point.

I'd be careful opening up tubes as there are probably some nasty gases in there.

Gases in a vacuum tube?

finally someone with a brain and the correct answer.

However on some directly heated triodes the thoriated material on the fillament is

actually quite toxic and known to cause cancer. Getter material is not very good

for you either.

I find a lot of tubes I get off ebay are microphonic..

Biggie.