Are you talking a Pilot TV-37? If so, I don't see a ballast tube in the schematic:
http://www.earlytelevision.org/image...-rider-tv2.pdf
Cheers,
__________________
Brian
USN RET 22YRS (Avionics/Cal)
CET-Consumer Repair and Avionics ('88)
"Capacitor Cosmetologist since '79"
When fuses go to work, they quit!
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