Should Tubes Glow Blue?

[mARKw]

I was checking out the tubes in my 2:90 and they seem to have a blue glow to them. I think it was mainly on one side - from memory it was the right hand side as you look from the back. Does this signify anything in particular? :?

Cheers

 

[stokes]

It is normal,dont sweat it.

 

[mARKw]

Aaahh. Thankyou stokes. I don't know what I've done to make myself so paranoid.

I think maybe that because only half were blue it might have been a problem.

Cheers again

 

[domct203]

I think maybe that because only half were blue it might have been a problem.

Are you in Half-Drive mode? If so, the two with the blue glow are the ones being used.

Dom

 

[mARKw]

I didn't have any of the modes selected - there were 4 tubes that were blue. Next time I will turn on half drive and check it out. :idea:

 

[stadidas]

The first time I used my Mullard EL34s (original UK ones) they had a very prominent blue glow to them which went away over time. A Shame really, it looked rather pretty.