The wiring for the tone switches is traced against the schematic just to be sure I know where everything goes. Now to start removing the old wires. The shield is unsoldered from the chassis, then the wires are unsoldered from the switches and underneath the chassis and removed. New wires are installed, the shield is re-soldered to the chassis, and the bundle is relaced using waxed lacing cord. Except for the wire being cloth covered instead of rubber, the new cable bundle looks like the original.
Power is applied again and no more cutting out.
The IF transformers are peaked by ear and plenty of stations are received on the BC band. The next step is to hook up the signal generator and check each SW band. Each band shows good signs of life. I next decided to check the voltage at the start of the filament string and it is setting at 9.2 volts which is just about right. The tuning capacitor is pretty dirty and the rubber grommets that it mounts on are hard and coming apart, so it is decide to remove it and give it a cleaning and replace the grommets.