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Tube Fireworks

Tonight I turned on my amplifier, starting hearing popping and hissing from one speaker, and turned around to find one tube sparkling like fireworks! Obviously the tube is bad and I won't use the amp again until I can replace the tube, but does anyone know why such a thing would happen? Thanks!
mikewdc
schipo
1,267 posts
 
I am only guessing because I used to own tube amps eons ago..I would gather the gas from that particule tube escaped and the forth started early.
elevick
2,439 posts
 
Unless you have junk tubes to test it with, I'd get the amp checked out first for a bad cap or ???
rleff
1,065 posts
 
The tube may have suffered arc over and you saw the results of that;but I also think Elevick's suggestion is one to also consider.
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