Peter Heembrock
Forum Participant

Hi Rick,

Having just finished working on this chassis model I can offer a few places to look…the 6J5 is the detector and the plate for that tube is fed through a 1 meg resistor so the plate voltage is typically 1 to 2 volts DC…and not much more.

I would recommend checking the values of item 35 and 34 ( 1 meg each I believe )…and then check item 29 and 30 which are 110pf…item 30 has these caps in a block…normally they are ok but if they have high leakage it can affect the detector stage.

Peter H