[DaveWM]

with the G2 drives all the way down and the bias all the way down you should not be able to get the setup lines and the crt should be dark.

You have a problem with the voltages going to the CRT pins. You need to get out the VTVM and start checking the K, G1 and G2, to narrow it down to what is the problem, then you need to see if the pots that control them are indeed working.
but 1st you need to make sure the HV is correct.

If you do not already own it I HIGHLY suggest you get the TAB book vol 1 RCA service manual by Carl Babcoke. He does a great job explaining all aspects of early RCA color sets, and goes into great detail regarding trouble shooting.