#1
i have voltage all around my tube sockets and such yet my tubes arent lighting up, i know that th tubes are good also because i just had them in a different amp. I also do not have any sound coming out, i do have volatges in different places in the amp.
-caleb
#2
You need to test the filament, heater, and grid voltages. If these are all correct and it's biased then get it checked out by a professional.
#4
Ill just say my generic response to this situation lol: I would get it checked out by a pro. It only costs just a few bones and its totally worth it to have your amp get a good oil change and tune up.