Yep, tube failure just after shipping, not unusual, and can happen with all tubes and equipment! This actually happened to my PL Dialogue Four, one EL34 power tube failed on first firing, took out one resistor on auto bias board, I did diy repair.
PrimaLuna tube amp issue
Aloha,
I just received by mail a used PrimaLuna Dialogue Premium HO Integrated amp. I hooked it up and it sounded great but after about 45 minutes of listening, the right channel disappeared after a quiet pop. I have swapped out speaker wires, cables...no effect. No bad tube lights come on. Left channel plays fine. Headphone only has left channel as well. It was running a little hot, but not excessively so. Any thoughts...
Bummer way to start with a new/used piece of equipment....sigh.
Thanks for your help in advance.
Michael