Quote:
Originally Posted by de.facto7
I still have no tubs in, but that pin 2 and 7 on the 6F6 are still showing ground to chassis. After figuring out which pin is which... 3, 4, 6 and 8 are not grounded... 1, 2, 5 and 7 are. 6 isn't used.
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Do you see a physical connection between pin 2 and the chassis and between pin 7 and the chassis on the 6F6 socket? If you are saying they are both grounded because of the resistance readings then you are measuring through the filament winding of the transformer (or a short circuit in the wiring). Disconnect the wires coming from the transformer from pins 2 and 7 on the 6F6 socket and measure between these two leads from the transformer. This measurement should be low (0.2 ohms according to the schematic). With these leads disconnected measure between pin 2 and pin 7 on the socket. This measurement should be open.
Pin 1 and either pin 2 or pin 7 should be grounded. Pin 5 should not be grounded. There should be about 500k ohms between pin 5 and ground due to the grid resistor.
With no tubes in it you aren't going to get any voltage on the electrolytics. The 5Z4 rectifier would need to be installed to get voltage to them. BTW, as a word of warning for when you get to this point don't ever run the radio with the 5Z4 installed without the speaker connected. Since the speaker has a field coil that is used as a filter in the power supply not having it in the circuit can cause the voltage to get too high on C13 and C14 and they can pop. Been there, done that.