Zenith Roundie HV Question - Help Please

[compucat]

I'm glad Zenith was slow to upgrade. Tubes and PC boards are not a good combination. Restorers of RCA roundies have to contend with broken connections, loose grounds, brittle boards and crumbling tube sockets. The heat just tears them up. PC boards are fine for solid state although I think heat generating components like large wattage resistors and power transistors should be chassis mounted. When it comes to tubes, handwired is the only way I'll go.