[GarySP]

Hello Larry. Replacement of the power cord is a priority, but not the first. All paper and electrolytic capacitors need replacement before introducing electricity to the mix. All resistors should also be tested, and all out-of-tolerance replaced. The Bakelite block in your picture has two filter caps that require safely caps when you rebuild it. Several tutorials are available here for rebuilding tips. There is no reason to install a three-pronged plug. Those safety caps provide your path to ground. Hope this helps. Take care, - Gary