Quote:
Originally Posted by Gabe001
Quote:
Originally Posted by ms660
I'm wondering if the cathode circuit of the mixer is going high resistance/open circuit and the 100 volts on the grid pin is some low current leakage from the HT side of things.
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I don't know what you mean exactly, Lawrence, could you indicate which components are suspect? I can't see any caps or resistors that could be responsible |
I wouldn't have expected 100 volts +ve on the control grid with the valve in place due to the diode action of the grid-cathode circuit, hence the mention of the cathode circuit, there's not a lot in it to check...resistance/continuity from cathode to chassis.
Lawrence.