I'm a relative newcomer hoping for a little help. I did the basic build with Edcors and the zener mod, just following the directions.
Most of the problems I've encountered I've been able to solve by combing through this forum: feedback was wired incorrectly, bias was too high so I put in 12V zeners and 200 Ohm pots, some humming, etc So thanks for a great forum and knowledgeable people willing to help out.
My voltages were all within range except for
V3-V6 pin 7 was ~400 (but I read in someone's post that a high B+ was OK, so I didn't worry)
V3-V6 pin 9 was ~402
and
V2 pin 1 was 256
V2 pin 6 was 247
The amp sounded good (except for a little hum that I was living with until I got it fixed) and I was giving it a trial run. After I had been listening for a while, I heard a thud, thud, thud and V6 started glowing brighter and brighter. I shut it off.
I double checked all resistor values and they are correct.
If anyone has any advice for me that would be great. I want to get back to listening to all tube goodness.
By the way, Shannon, the hole in your FPE file for the on/off switch doesn't fit the switch in the mouser BOM. No biggie, but I thought you'd like to know. It is sized for a smaller switch.
Heath