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Could the fact my DC probe has an integral 1MOhm resistor in it be causing issues with this nulling measurement? I should be able to center this VTVM no matter what scale I have it on since there's 120V DC on both sides of the resistor correct? BTW, R119 was out of 5% spec at a hair under 6K. I replaced it with a 1% modern resistor at 5.6K
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