Is this Zenith worth the effort?

[zeno]

By the book
Turn AFC off
Tune all channels for color pix without "worms"
Turn AFC back on. Should be good for years now.
Even with AFC off the set should work for years OK.

Selector module has only the following IIRC
AFC switch
Channel switch
18 tuning pots
AFC defeat switch ( defeats AFC during channel change )

Trouble shooting:
We did change some for erratic ops IIRC.
Try tuning ch3 on another slot (2 or 4)
Try tapping selector, VHF tuner, TNR control board &
150-190-01 IF module.
Defeat AFC by grounding the blue/white wire at tuner.
Monitor the tuning voltage at tuner. Dont remember color but its
NOT red, yellow or blue/white.
CHECK FOR COLD JOINTS !

CU later Zeno
LFOD !