http://www.antiqueradios.com/forums/...p?f=8&t=363692

https://www.byan-roper.org/steve/_Me...schematic.jpeg

Might help in the restoration process.

On the 2/3 conductor line cord: If you look at the schematic - there are two (2) 0.01uF safety caps in series with a ground between them - which is the same common ground throughout the system. And, by the way, those are X-types as the are between the hot and the neutral. I will not presume that the common ground is also the case even though that is both very likely and common, but you can check that easily yourself - is there continuity between the case and the chassis? If so, go ahead and install a 3-wire cord, grounding to the case. If not do some more checks before going to three wires so that you do not cause any damage. Also, when the device is in operation, is there any leakage (VOM on AC, case-to-good-ground: Any voltage showing?)?

Peter Wieck
Melrose Park, PA