I put the TungSol KT-120's and the Weber solid state rectifier back in the amp and hadn't had a problem until one of the TungSol's started glowing a lot brighter than the others. The tube that glowed brighter was in the front left socket. I figured since the tubes probably had 2000 hours on them it was time for a replacement. So I put the Sovtek KT-88's that I got back in the amp earlier this week. Everything worked without a problem.
Today I decided that since these two other tube types worked fine the Gold Lions I got last year should be good too since McShane replaced the bad tube. As it turns out before I could even bias the Gold Lions I heard a motorboating sound. I quickly shut the amp down. I also noticed that the Gold Lion KT-88 in the right front socket was warmer than the others.
So...what's the deal here?
Last edited by Dogstar on Sun Aug 28, 2016 6:10 pm; edited 1 time in total