I have a power tube thats not glowing

[vinterland]

Anything to worry about? I've seen preamp filaments not light up and they're fine but never a power tube. Everything seems fine though.

 

[Rich_S]

Re: I have a power tube thats not glowing

Is it a duet or a quad? If it's one tube out of a quad, then it might be working at half power and you haven't noticed. Or, you just might not be able to see the filament from your angle - they're not always easy to see.

If the filament is truly not glowing, there ain't not way the tube is working.

 

[vinterland]

Re: I have a power tube thats not glowing

Is it a duet or a quad? If it's one tube out of a quad, then it might be working at half power and you haven't noticed. Or, you just might not be able to see the filament from your angle - they're not always easy to see.

If the filament is truly not glowing, there ain't not way the tube is working.

2x 6L6's, I've looked at it pretty hard and can't see a filament glow. I figured the fuse would have blown?

 

[Gearjoneser]

Re: I have a power tube thats not glowing

You should have another spare set handy anyway. I'd throw a couple Svetlanas in there biased around 32mA, and the amp would be back to new.