Faint buzzing coming from the amp

[oguinn]

Completed my Crack a couple days ago and noticed a slight ring or hum, even with the volume all the way down. I noticed this morning that there was a buzz coming from the amp itself. I tightened the screws on the transformer but that doesn’t appear to have changed the buzzing with the amp itself. Is this potentially a grounding issue? Or do I need to crank those down even more?

[Paul Birkeland]

I would just be sure all of the hardware is tight and redo your voltage checks. 

[oguinn]

Yeah, I’ll try that tomorrow. It seems to have gone away after about 30 minutes of use, so I wonder whether it’s a burn-in thing since I’m not positive if it’s the 6080 tube or the transformer buzzing. I have a new tube to roll in at some point too.