Rants of a 1970's Era Repairman

[old_coot88]

Originally Posted by holmesuser01

...I have fond memories of Sylvania tube chassis with lots of overheated resistors in the Y circuitry,...

Ha. Did you get any of those hybrid Sylvanias with the 2-watt collector load resistors on the two demod transistors? The resistors were carbon comp, and ran pretty hot to begin with. Over time their phenolic casing would carbonize, creating a low resistance shunt that would run hotter and hotter till one of the transistors would pop and the other was about ready to pop. We replaced each resistor with two 2-watters in series, doubling the wattage rating (and of course replaced both transistors).