[DaveWM]

well those all look a bit high considering the G1 in the mid 30's give you a bias of about 160ish neg which is prob cutting of the CRT.
you would want it bias off more than normal since you want to reduce the beam current when the vert sweep is disabled but not completely cut off. Sorry I just know know what the exact number should be.



I would check the voltage of the output transistors next, and if you can get a good bright raster in reg but the serv mode does not work, then I would check the resistors and that ties the emitters of the outputs back to ground AND that blanking signal from the fly. Now would be a good time to trace the flyback signal with the scope.

It looks like the emitters get voltage from the emittier of the video driver in reg mode, but in the service mode they are grounded thru a 1.5k and a 12k that gets the flyback pulse. look this over carefully on the schematic until you see what I mean.