[LenH]

Thanks for the help. I'll go check those resistors again. I asked about the 1300 ohm resistor wattage simply because it gets very, very hot and was apparently replaced by a previous owner. It is 10 watt, but for the long haul, I will likely go with a 25 watt if I can find the right value.

With my audio generator connected to the test connector, I get clean audio to the speaker, weak as you state, without the 6J5 installed. Volume and tone seem to work fine. With the 6J5 re-installed, I immediately get noise, a crackling popping noise (bit like shot noise), in the speaker that is not affected by the volume and tone controls. However, the audio signal is present in addition to the noise, but overshadowed by the noise.

I tested the 6J5 and it appears to be well within the "good" range. So, I'll go dig some more into potential offending components. All the coupling and paper capacitors have been replaced but no mica capacitors.

Thanks again for the help, and any further ideas you might have.

Len