17" Zenths started with E-line CC2. One that had white trim gave the best
pix of all CC2 sets. I dont know why. In H-line the CC2 was modified to
use the EFL tube & came out on high end 17 & 19" sets. The 17"
never sold a lot, only a little more $$ to get the 19".
You may want to look at the spring CRT contacts. Never seen it on a
Zenith but Maggys & Admirals using the RCA in line jug burned at
the filaments. Pretty common. Had to pull the plastic key, clean the pins &
also replace the CRT socket.
73 Zeno

LFOD !