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Old 29th February 2020
Here for the gear

Originally Posted by Radardoug View Post
You need to understand which wires connect where. The chassis of the power supply should be connected to mains ground. The supply outputs may not be connected directly to ground, so the supply floats. Then the frame of the mixer should be grounded to mains ground, and the supply may bond to ground there.
So you have to identify exactly where to measure. Modern meters have high input impedance, and will read stray voltages easily.
Thanks again, Radardoug...!