[bgadow]

Thanks John, I'll give it a good once over. I have a handy Sencore troubleshooter which can be used to inject the horiz. osc. pulse but no luck with that. I also swapped around the 6SN7's. Still could be something open in that circuit-I haven't dug into that much. At one point I disconnected each lead off of the voltage divider resistor and measured current draw on each leg, and one leg drew almost no current. I just can't locate the culprit though. More searching tonight...