==In that case you have a flawed design. Burned out resistors==
Probably. I don't know if it is unusual for high power tube amplifiers to use sacrificial resistors to protect itself against failed tubes, but I certanily never had it happened in other tube amps I owned.
On the other hand it is a simple fix and the rest of the amplifier is intact.
If this doesn't happen too often, than this is not so bad. I suspect the wide bias range allowed owners to set the bias too high, resulting in a tube smoking. In my case, I suspect that I replaced the tubes in the wrong sockets, resulting in inadvertant high bias at that socket.
Probably. I don't know if it is unusual for high power tube amplifiers to use sacrificial resistors to protect itself against failed tubes, but I certanily never had it happened in other tube amps I owned.
On the other hand it is a simple fix and the rest of the amplifier is intact.
If this doesn't happen too often, than this is not so bad. I suspect the wide bias range allowed owners to set the bias too high, resulting in a tube smoking. In my case, I suspect that I replaced the tubes in the wrong sockets, resulting in inadvertant high bias at that socket.