1964 Fender Electric Instrument co. Blackface Princeton Amp Update

Inspect. Test all tubes. New caps. New tubes. New grounded power cord. Remove "death" cap and ground switch. Clean jacks. Clean pots. Clean tube sockets. Add power tube retainers. Add adjustable bias. Set bias. replace cracked resistor. Clean up bad solder joints. Rewire AC input. Adjust knobs.