Quote:
Originally Posted by zeno
The most likely use is to ramp up voltage from a cold start.
On turn on the thermister starts at 120 ohms & quickly goes to near zero ohms.
This limits the surge of the PS electrolytic caps charging up.
Most sets use a @5.6 5Watt FUSE resistor for this.
Test is to jump it & bring up on variac.This is NOT a fix but lets you
check the set out BEFORE you chase & spend $$ on parts.
Thats probably what you have ( without seeing schematic ).
73 Zeno 
LFOD ! |
Thanks!!! I had a Zenith from the late 50s that used that same value resistor on the line. I'll try it
Chris