I would look for cold joints on the conv. board first.
A little tapping around may smoke it out.
Also its not rare for the lines not to match up in
service position. Killing the vert takes away pulses needed
in the conv circuit.
For grey scale normally bring up the G2's one at a time
then back down til the line just disappears. After a good
warm up of course......
The VRT is a nice touch, add Electrohome to the list of users.
Zenith, RCA, Admiral, GE, Panasonic Who did I miss ?
Sylvania ? Maggy ??
73 Zeno