Back To The 58 Space Command....

[Tubejunke]

After completing the RCA I had room to break out the Zenith that had me stumped over a year ago. When I brought the set home I had no vertical sweep and only a hum for sound. So I replaced MOST of the caps. I thought repalcing the power supply filters would eliminate the hum. I did ALL electrolytics. No dice. I repaced several resistors and most of the paper caps. The only paper cap left is in the Horiz. section which has always performed well.

The first thing I saw on a fresh look over everything was a maybe 2 watt 680 ohm resistor that looked like it had gotten hot. Well it checks 680k ohms. WOW! I venture to say that is my vertical sweep problem. Still not sure about the rest but sometimes you just have to put something to the side after you get frustrated. I will probably make progress now. It just sucked to darn near replace all the caps and have absolutely no improvement over the way the set started off.

I know Zenith used this same basic chassis design for years so if anyone has any tips on these please fill me in. And also I have no remote if anbody has an extra.

Thanks