Re: AVO VCM Mk 3.
Apart from the voltages being somewhat lower in your Mk III compared to the 163 in your scope photos I can't see any reason for the anode current to measure lower unless the resistors in the measurement circuits are wrong - have you measured them all and checked their resistance compared to the BOM?
You mentioned some resistors that looked overheated, could there be any switches that have some contact resistance that might affect the current flowing in the circuit?
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Martin, Sweden
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