Quote:
Originally Posted by Station X
OK. Now you've got the resistor disconnected make sure it measures 510K.
There should be no DC connecton to pin 4 of the 42 except for the 510K grid leak resistor. What else is connected to the 42 pin 4? I would expect to see only a coupling capacitor (THAT capacitor from the previous stage.
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yes AVO reads it as 510k
backing out from pin 4 you hit this
pin4...... 0.1uf....
the 0.1 is coupled from pin 2 of the 75 (why does everyone call it THAT) which also has the 220k onto HT rail as mentioned before