Zenith 4-tube hybrid Chromacolor questions

[old_coot88]

There used to be a strange malady that would turn up in these sets. And it was not the set's fault. The Zener on the 24V (or was it 16V?) buss would be shorted.
The set originally had come in for hum bars. Some ham fisted techie had been jumping the filters with a test cap, but failed to discharge the test cap before going to the next filter.
The low voltage filter is in the same can with the B+ ones. The techie would jump the test cap, charged up to full B+ voltage, onto the low voltage filter, instantly blowing the Zener.
Good thing the Zener shorted, or the overvoltage surge woulda probly blown a bunch of transistors.

[Gunslinger]

Originally Posted by RetroHacker

Correct - I haven't disconnected the tripler, I was just measuring there. I was using a high voltage probe, it divides the voltage by 1000 so I can get a reading on my meter without blowing it sky high. So, my reading of .717 volts would indicate 717 volts at that point.

I'll disconnect the tripler and see if I can get healthy voltage there.

Another thing I noticed is that the damper socket is pretty cruddy looking, it'll probably have to be replaced, but I don't have any 12 pin sockets on hand.

I'll try to get a picture of the front of the set soon. It's not a Space Command, sadly. I would love to find one of those!

-Ian

I probably have a new damper socket along with the riverts and rubber washers that hold the socket in place.