Hey fellas,
My 2266C developed an annoying crackling sound which appeared about 5 minutes after powering up. It would go on for 10 to 15 mins sometimes.
I jiggled one of the KT66's with the amp on; and there was the crackle. I swapped the tubes around and problem gone. Sweet.
So it could be that the tube in question was just not seated properly. Do I need to put the tubes back in their original spots for biasing reasons?
And if the tube is in seated 99% in the slots; how can it not be seated properly? Bad electrical contact?
Can those bear claws actually work to push tubes out of their seats marginally?
Does anyone have experience of this?
Cheers.