Guy & Gals- Last night I went to fire up my SE84CS and the Mullard 5u4 lit up, but not the input or the SV83's. I opened it up and measured the voltages (it was a kit I built) and everything was the same as the day it was completed. I swapped out one of the SV83's no change, swapped out the other and everything fired up. I looked at the schematic but I guess I'm missing something that if one output goes bad those three tube don't fire up?? Anything else I should look at or measure?? Sounded fine and I have more SV83's coming from DeVon next week. Please let me know if I'm missing something else.

hdrider:
Could you have DIY'd your filament string in series as opposed to parallel?

dr_sleep