Sears 101-854

[Zenith26kc20]

The Silvertone has been a good worker for quite a while until yesterday. Suddenly , no brightness and terrible sound. Digging around showed plate voltage on the video out 7B5 was about 80 volts lower than it should be. What makes life even more fun is this set, like early RCA sets has a 130 volt negative line. A bit more digging revealed the line would go to -30 when the screen went dark. I finally said "enough" and hooked up my bench supply and when the 130 volt line drooped, I cranked it back to -130 on the supply. The three section candohm started to smoke. Pulled the candohm and the 510 ohm section is corroded terribly where it laid up against the chassis. It is shorted to ground. Now I get to wait for the separate resistors to arrive and mount them. I am also changing the other candohm as it is in a number of circuits, especially right off B+ waiting to go after a number of critical parts (focus coil for one).