A few things with the usual IIRC's & IMHO's.
Only remember 2 kinds of the big xtals one had a third
ground wire soldered to the case. All 2 legged ones were
the same, even sold under ECG. They did go bad more often
than components.
If you have sets infested with 6GH8's you need to keep some
NOS BRAND NAME ( no rat shack) ones around. They are also very touchy
as to the circuit they are in. They can work fine as a sync
separator but not work for color osc as an example. If you
shuffle them around usually you will change symptoms.
They were so bad that we bought them by the gross 2-3
times a year for 29 cents.
I could tell you more stories abt 5 & 6GH8's.....
Most coils in TV's never even need tweaking. If you do it
put a flag on the tool. This way you can put it back where it
was. Count & write down & keep the note. I used to note it
on the slip " L703 3/4 CCW" if it came back again I could go
back & find the problem.
For your problem your freq is way off so start with 6GH8,
several if used even from a known working set. Next the
xtal. Then easy voltage & resistance checks. After that
caps one at a time ! But thats me...........
73 Zeno
