05-18-2014, 10:07 AM
I have seen the same thing more in the higher-wattage Philco carbon resistors than in the smaller rated ones. Why they decrease vice increase in value I do not know.
As a rule I replace any resistor more than 10% off. I figure that it will continue to change value as it continues to age.
As a rule I replace any resistor more than 10% off. I figure that it will continue to change value as it continues to age.