After installing a copper coupler over the IEC connector feeding my CDP I tested it with a simpler version of the tester used in the Marantz video. The meter registered as if the coupler weren't there. A bead of Blu-Tac substitute was holding the sleeve in place, so it was removed and the meter no longer registered. Adding several wraps of Teflon plumbers tape around the connector held it in place and allowed the sleeve to work its magic.
I don't claim to understand why, but can't ignore the empirical evidence and thought the results might be of interest. Thanks for the great tip.
I don't claim to understand why, but can't ignore the empirical evidence and thought the results might be of interest. Thanks for the great tip.