Dear GEOFF,
well i have check the filament and the continuity is going through. the filament (small, large and common filament) is control by tube control board.
i have done several test:
with the filaments disconnected, at the start up, it shows filament supply error
the following voltages where taken at the standby and during explosure:
standby/ explosure
com - large: 2.66 V 7.56 Volts
com - small: 0 V 0.16 V
groung - com: 4.62 V 6.02 V
groung - small: 4.71 V 6.20 V
groung - large: 7.29 V 13.24 V
so i do not know if these voltages are normal
Best Regarg
