Ohm check with power off and power disconnected:
Primary connected for 120V: 0.9 ohm
HV secondary at GZ34 socket (pins 4 and 6) 17 ohms on one side and 18 ohms on the other.
Bias tap, 2.6 ohms to ground
Voltage check use Extreme Caution!
Line voltage 120.3 VAC
GZ34 socket (pins 4 and 6) 413 VAC to ground
Bias Tap 62.5 VAC to ground
Heater winding with power tubes removed: 6.52 VAC
Rectifier Heater GZ34 pins 2 to 8: 5.05 VAC
