04-12-2011, 06:34 PM
I am just getting started in radio restoration and have successfully completed the repairs of two RCA's AA-5 radios. I am now getting started on a Philco 48-300. There is a 2-section resistor in the power supply. Each section has a design value of 875 ohms. When checking these values I found that R100B is 660 ohms and R100A is 925 ohms. My question is do these need to be replaced and if so, what wattage should they be? I can't find any specifications on the circuit diagram or parts list regarding wattage. Also, there is something installed parallel with R100B and I don't recognize it as either a resistor or a capacitor. Nothing is shown on the circuit diagram. It has flaking red paint on it and is about 1/4 inch in diameter and about 1 1/2 inches long. Does anyone know what this is?
