6V6 flare at start up

[cbj591]

Good morning all,

I have one 6V6 out a matched quad that briefly flares at start up. This is less than a second. I have changed position of the tubes and the same tube does it.

Is this tube bad? It has about 50 hours on it.

Thanks
Brian

 

[DigitalJunkie]

What kind of "flare up" are we talking about? Does the heater flash? Is there arcing inside,etc?
Either way,it sounds like that tube might need to be replaced.

 

[cbj591]

sorry for the vague description.

the tube gets a reddish glow like the heater or tube is on. this only happens for a brief moment. i can see it on the inside at the base area of the tube. there is nothing that would alert me to a major hazard.

it happens so fast i cannot tell if it is the heater or not. it is more like a brief flicker.

it is no brighter or exciting than what happens when the tubes are heated and playing music. it happened to catch my eye one time.

thanks
brian