Class A tube guitar amp Russian 6N3C or 6V6GT, No bias adjustment Boutique police radio retrofit

[@alexdeleon7135]

Insightful. Thanks Terry!

[@iblesbosuok]

I think, switch to 390 ohms would give closer approach. Btw, very good output transformer.

[@MarkErikEE]

True that. 6P3S is the soviet equivalent of 6L6G. 6V6 equivalent is 6P6S.

[@trenenpierskalla5500]

I have a solid state Crate B10 xl, I can’t find a schematic for it and I’ve been trying to troubleshoot it for a couple years now, it was playing then suddenly zero sound, even if I touch the aux, but it still shows that it’s powered on. I tested the speaker itself and it’s good. There is no sound to headphones. The fuse is good, all the aux inputs and outputs are making contact, there is no visible problems or signs on the circuit board or wires. I even re-soldered the whole thing. The capacitors seem to be fine but I suspect it’s the output transistor/mosfet or an IC. Any suggestions would be great.

[@michaelspiering7585]

What about heater current?

[@user-rk7td4cj2p]

Нет такого выходного тетрода -6N3C,есть 6П3С,6П3С-Е. Всё остальное-китайский шлак!