• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

No audio signal after swapping capacitors

The bad resistor has been replaced and all solder fillets have been redone to ensure there are no bad joints.

When I bench tested the amp this time around, the resistor on the bottom of the cap can blew up. I have a replacement on the way, but does anyone have any thoughts on what may have caused this? Wondering if it was likely going bad (it was 65 yrs old) or if there is something else I should be looking into.