These higher voltages come from the 80 rectifier rather than direct from your power transformer.

http://www.nostalgiaair.org/PagesByModel/002/M0040002.pdf

Check voltage on one of the large pins of your 80 (UX280) tube. From there voltage goes through a 400 ohm choke. Is it open?

Norm

:I have a Majestic radio model 70B with 7P6 power supply. The voltages are present for the 5Vpower, 1 1/2 V A.F, 2 1/2 det and 1 1/2 RF, but no +50, +96 or +260. All of the tubes light up and the radio is in very good shape (the old wiring has been replaced).
:
:I suspect the transformers that generate these voltages or a "common" feed to these transformers.
:
:I would appreictae any information that anyone can share. I have .pdf files of the chassis showing graphics as well as a schematic.
:
:Grigsby-Grunow Co.
:Model: 70B
:Power:
:Chassis:
:Circuit:
:Year: Pre 1932
:IF:
:Tubes:
:Bands:
:Resources
:Riders Volume 1 - MAJESTIC 1-5
:Riders Volume 1 - MAJESTIC 1-10
:Riders Volume 1 - MAJESTIC 1-24
:Courtesy Nostalgia Air
:Courtesy Nostalgia Air
:Courtesy Nostalgia Air
:Courtesy Nostalgia Air
:
:I am persistent and not ready to give up on bringing this radio back to life.
:
:Thanks in advance for all of your help.
:
:Terry