Installed new tubes. Now a loud pop!

I put new old stock tubes in my PS Audio amps & pre & now a loud pop off & on.

Help!

fertguy02-25-2025 9:14pm

carlsbad2 Details Discussions Posts This discussion Message User 2,023 posts 02-26-2025 at 04:28pm Copy Comment URL Report Comment Edit Delete "scorched"?
carlsbad2 Details Discussions Posts This discussion Message User 2,023 posts 02-27-2025 at 01:00pm Copy Comment URL Report Comment Edit Delete I’m from MO too. are you talking about a black spot on the inside? I wasn't quibbling with your word choice, just wanted more details. thanks.