[dconant]

Thank you Rod. 

Hello MrFixr55. Thank you for the long reply. My radio is the 121 version (1 speaker) and I am aware to use the 121 candohm (#46). Pin 3 of the candohm is connected to ground. The 2700 section was open so I replaced with a 10 watt 2700 wirewound. Alll the tubes in the radio are the globe tubes and they all test good. I just replaced #47 with a 630 volt .001.

I used another 2700 10 watt wirewound for the field coil replacement. Voltages on the tubes seem good to me. I have used 10MF for the filter caps. The 42 tubes are 200 volts on the plates and screen grids. Kind of low using a VTVM. B+ off the rectifier is 240 volts even with a different tube. Rectifier plates are 302 volts. Both 44 plates are 200 volts, screen grids are 75. Same for the 36 tube. Plate of the 37 (audio) is 100 volts. Plate of the 37 (Det Amp) is 50 volts. The other 37 plate is grounded. The 37(audio) is the only tube not low. Is this because I have 2700 ohms instead of 3200 ohm field coil replacement?

I'm not sure which schematic you are looking at since there are 2 for the 91 but the second one shows a switch #7, which my radio does not have. But there is a second switch on same post as the power switch that connects cathodes of both 44 tubes. There is also a 160K resistor between the two cathodes. When the switch is on it is a straight shot between the tubes. When off the resistor is between the cathodes. The effects the volume of the radio greatly. This does not show on any schematic I have seen.

I have included some chassis shots. Still need to derust the tube shields. I have them all.

Dan