Ctc 16ex sos

[Electronic M]

Looks like you are making good progress.

So the green wire that the vert centering control connects to is shorting to ground?... Interesting.

It could be a secondary to frame short in T2, but I'd more expect it to be damaged insulation of the wires especially if the vert yoke leads go through a chassis hole.

This is a job for the Ohms mode of your DMM. Leave the green wire disconnected from B+ and measure the green wire's resistance to ground it should be very high like a few thousand ohms or more (but probably won't be if there is a short). Unhook the secondary leads (GRN, GRN-WH, YEL) from the transformer and measure the resistance between those leads and ground. If the resistance of the unhooked leads to ground is low/measurable the transformer is probably bad...If not (transformer is fine so) check the stuff the transformer was hooked to for low resistance paths (under 5K ohm to ground).

The idea is to find the short by chasing a low resistance path to its source.

You're doing well just a bit more and you will have it completely diagnosed.