JJ glowing twice as bright

[Rockmore]

Valves are surprisingly tough, so a short period of overload might not have done any harm apart from using up a little life. I can't remember whether you swapped it over, but this would let you check whether the fault follows the valve or the circuit. If it does what my orange EL34 did it will then work OK for months - I'm still waiting for it to fail again. For the first few weeks I would not leave it switched on but unattended for more than a few minutes.

It is certainly worth inspecting the socket, just in case there is something obviously wrong there. Modern sockets don't seem to be as reliable as NOS ones.

Its been powered with same audio source for at least 30 hours in 4-5 hour increments, since, trying to see IF it followed the tube after switching. No problems at all... Like Wavebourn said, might of had something to do with those cheap socket contacts "reforming", even though this is the only tube replacement it's ever had. The tube in question must of has at least 200 hours in that socket with no problems before the plate glow.

Wavebourn- not everyone is superman(men) with infra-red vision like us! LOL

 

[Wavebourn]

Wavebourn- not everyone is superman(men) with infra-red vision like us! LOL

Some of us even have golden ears. 😉

By the way, if the tube was gassy it could run away thermally after playing aloud.