BH crack buzzing noise

[wiener4hire]

I'll try and clean the pins tommorow when i can get what i need. I'll also check if there are any bad spots. I did just see this after unplugging the 6080 however:

http://imgur.com/m6F8z5l

As you can see some of the pins inside the socket look bent, could this be the issue?

[Paul Birkeland]

The socket forks are free floating and will shift around as you insert a tube. If the 6080 will go all the way into the tube socket, they are very likely doing their job.

Pin 7 potentially looks like one of the fork pins has been bent out of position, but it's hard to say from the photos. If pin 7 wasn't working, the 6080 wouldn't glow.

-PB

[Adrian]

I have a buzzing from one channel only (much weaker in the other) that swaps channels when I swap the valves in my S.E.X. 2.1 from one channel to the other.  Mr. Joppa suggested that it may be a condition affecting the cathode to heater coupling due to poor insolation.  He recommended that I run these valves for 50 - 100 hours and see if that will quiet them down.  He can't explain it but says sometimes it seems to do the trick.
I know there are many differences between the Crack and the S.E.X., such as 6DN7 valves (1 per channel) vice only one 6080 valve for both channels.  You don't have the option of swapping channels to try and isolate the offending valve.
For JP, Paul, Doc B., and others:  Is this a possible source of the buzzing the OP is experiencing?

[junkimchi]

I had buzzing in my crack that was caused by a bad (stock) power tube. Once I swapped it out, the buzzing stopped.