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RE: PING to Audio Note Kit One owners

Hello Beto,

Look at the tension of the left 300B cathode. It should be something like 50 to 70Volts, but not 0Volt. The current through the left 300B is going through the cathode resistor to GND.
There is a formula (V=IxR) that say that when there is a current through a resistor there should be a tension. When there is no tension, there is or no current, or no resistance.
There is current (even a lot) through the 300B (that is why the tension on the right 300B are so low). Conclusion : the resistance of the left cathode resistor is 0 Ohm (it is defective)
(however I assume that you did de-solder the cathode capacitor and the isolation between the filament regulator and chassis is still working.

Replace the left cathode resistors and do the test again.

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