Zenith 18CC30 no longer regulating

[dieseljeep]

Originally Posted by zeno

Classic symptom of a bad VDR in the HV reg. Search drh4683 here.
He did a study of it & found a modern sub for it. The original
part was color striped. They subbed to a new p## a very nice blue color
with a Zenith 63-#### on it.
Trouble is the new OEM parts are going bad on the shelf.

If this helps pls let doug know & thank him for his work.
BTW always be sure the damper & HV reg tubes are per the layout chart !
There are 2 pairs that work together but subbing one screws things up.
Usually there it a caution sticker on the HV cage about it.

73 Zeno
LFOD !
73 Zeno

The set in question seems to be one of the odd-ball models that Zenith built in the B&C model years, 1971,72.
I don't think that set has 18 tubes either.