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Power supply resistors in Model 48-300
rck46
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Posts: 53
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Joined: Apr 2006
City: Davis, CA
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04-12-2011, 07:34 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?
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Power supply resistors in Model 48-300 - by rck46 - 04-12-2011, 07:34 PM



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