Re: Amplifier problem (record player)
Measuring the cathode voltage is such a simple test. As I said above, a voltage between 9 and 12 volts will equate to a current of between 27 and 36 milliamps (measured across the 330 ohm resistor). It will tell us if the valve is drawing sufficient current
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There are lots of brilliant keyboard players and then there is Rick Wakeman.....
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