10-13-2013, 09:31 AM
Second IF grid cap should always read zero volts. It is not one of the AVC controlled tubes and the grid is at DC ground potential through the IF transformer and selectivity switch. It seems that the voltage reading on the schematic for the 2nd IF grid is a typo error.
The voltage on R16 is dependent on the characteristics of the 6F5 tube and the level of power supply B+ voltage. Since your B+ is a bit high, the voltage across R16 will also be high. You can try another 6F5, but if the audio is not distorted I would leave it alone.
The voltage on R16 is dependent on the characteristics of the 6F5 tube and the level of power supply B+ voltage. Since your B+ is a bit high, the voltage across R16 will also be high. You can try another 6F5, but if the audio is not distorted I would leave it alone.
