[mikethedruid]

I have looked at the schematics of both the early and late versions of this radio. Nowhere does it actually show the connection to the ground terminals, although it does show "chassis ground" for many connections, and also a .005 mfd condenser used between the actual chassis and the cabinet. If you re-wire the power supply as Ron outlined, with the wide blade of the new plug going DIRECTLY to chassis ground, and the narrow blade to the switch and then to the proper place in the power supply, you should not have a problem even if you DO use a ground wire to the chassis, as long as the outlets in your house are properly wired. The wide blade is SUPPOSED to go to the "grounded" (neutral) white colored lead, and the narrower blade to the "hot" black colored lead. The white lead is supposed to be connected to ground at your breaker panel, as is the bare or green GROUNDING lead. To eliminate any potential problems, should someone ever plug the radio into a miswired outlet, I suggest simply using a .01 mfd, 600 V poly condenser between the ground screw terminal beside the antenna screw terminal, and the chassis, instead of a direct connection, should it be directly connected at present. This will appear as a direct connection at radio frequencies, but pretty much isolate the radio from a direct connection to ground at 60 cycles, saving any potential ugly damage. If it is presently a .001 mfd condenser, use a 600 V poly condenser of that value.