N_Cook wrote:
Omer S wrote in message
m...
"Heinz Schmitz" wrote in message
...
Omer S wrote:

Why is it so important to debunk a failing tube that gave four years of
satisfactory performance?

Dude, just $#!^can the offending tube, and move on!
Its not *four years*, but only the ON-time in four years.

You living on some island where tubes grow on trees?

Regards,
H.

An interesting link, for further analysis of what could bring the demise
of
12AX7 vacuum tubes,

Http://www.vaccuumtubefans.org/forums/Topic_12AX7






Could you check the URL
www.vaccuumtubefans.org/forums/Topic_12AX7


Same problem here.

I googled vaccuumtubefans and all I got was pointers back to this thread.