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How to handle infant mortality of Svet 6550C?

Purchased from Vintage Electron,one tube died,out of an octet purchased for my ARC VS110.Tubes were used by me for a total of 4 hours,bias checked metculously after every hour after warmup with no signal.
The dead tube took a resistor with it(hopefully not more-remains to be seen).
My question is:What kind of refund/compensation is in order here:Can I return all 8 tubes?Who is responsible,etc.?
Thanks,Raanan
reylon
marakanetz's avatar
marakanetz
5,473 posts
 
Check also the DC-supply caps arround the bulb that had been blown. These "guys" can likely take away the tube...
reylon OP
47 posts
 
Thanks for your responses.
My tech said that it was clear that there was a failed tube.It took 2 resistors with it.BTW,turns out that the Svetlana 6550Cs that were sold to me are actually made by Sovtek.
Anyway,Vintage Electron has offered to replace all 8 tubes,and I will probably content myself with replacing the matched quartet that includes the failed tube.
This is my first experience with current production high power output tubes.I have been quite spoiled in the past with amps that take the likes of KT66,EL37,EL84.But,my CLss need the power.
Raanan
newbee
4,794 posts
 
Reylon, Did you note Jim M's comments re 'round holes' on old Svetlana's? They were not made by Sovtek. KIS's comments were inaccurate.
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