G.M. Durrence wrote:
Checked all that, also checked all ribbon cable connectors. Even the
menu doesn't have green so this eliminates cables and connectors. I
also made sure the CRT was socketed well. I suspect an internal CRT
problem but would like to test voltages on the CRT before discarding
it I but need a schematic.

change the green drive wire, at the crt socket, with one of the other
colors and see if the green comes up. If it does then the crt is
probably ok.