I've had tubes blow in an ARC CA-50 & a VT100 with a loud electrical snap & a puff of smoke. In all cases the amps still worked with one tube unlit & exploded resistors next to the unlit tube. Replaced the tube & resistors & life was good again. (In one instance the resistor I "retrofited" wasn't "flameproof" & when it "blew" a very brief wisp of flame was visible.) These were all non-ARC sourced svetlana 6550c's. This has occurred once in the CA-50 & twice in the VT100 (different tube locations) I always check the adjacent resistors when suspecting a tube problem...
Fireworks in an Audio Research VT200
I turned on my amp the other day and as it was cycling through the start up process, I heard a large pop and then an enormous fireball flew out of the top of it. I immediately unplugged the amp. After taking all the tubes out and visually inspecting everything, I concluded that no tubes were blown. I put it all back together and it sounds great and I have had no problems since. The bias is fine.
Has anybody had experience with this sort of thing?
Has anybody had experience with this sort of thing?