[Boatanchors] (no subject)

[Rodger]

My only experience with Svetlana has been the 3 4CX800 tubes in my 
homebrew amp which have been entirely trouble free.  I have also not 
heard any negatives about Svetlana in "internet land" although I am sure 
there have been other failures.  However, I think that the Svetlana 
tubes in general have a well deserved reputation for good quality and I 
hope that your 811A failure was a fluke.  Have you checked the solder 
connections on the socket and then also the tube pins themselves.  If 
the socket is good (try switching the tubes between sockets) then I 
would try reheating the cathode pins to see if perhaps the original 
solder joint is bad. 

73, Rodger WQ9E


>
>
> Hello everybody. I welcome some information.
>
>  Could someone give an evaluation of Svetlana tubes in general
> and Svetlana 811A's in particular as compared with other
> manufacturers?
>
>  A friend gave me two 811A's, NIB, and I tested both in my
> tester. One was strong as a tornado. The other had a very dull
> filament glow for about 30 seconds, and then fizzled out dead to
> the world. I am puzzled by its purchase of the farm.
>
>  Thanks es 73
>  Raymond
>
>
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