Can vacuum tubes go bad or age?

[Lt. Bob]

I thought this thread was about tubes...

like conversations threads morph into other things once the OP doesn't come back.

 

[miroslav]

I thought this thread was about tubes...

You were taking too long between posts....the thread turned a corner....

like conversations threads morph into other things once the OP doesn't come back.

I think I saw the OP busy digging a hole in his back yard to store his tubes in.