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One thing I want to understand. With the DC probe and ground from the VTVM attached to either side of R119, what is it I’m seeing on the meter? I actually read the voltage just for grins on the leads on either side and they are about 7 volts of negative DC apart. One side is -120V DC and the other is -127V DC which I guess is the result of passing through the resistor? But regardless what is it I’m measuring and “minimizing” when the trap is being adjusted?
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