01-13-2013, 05:31 PM
Hello All
Did some extensive checks & found/did the lollowing....
Replaced all resistors out of tolorence. Ordered caps so I can recap radio. While waiting for caps, checked all voltages. Found the following...
All power xformer voltages between the taps are good.
24A 1st & 2nd rf....
2.1v pins 1&5 filament plate 325vdc pin2 114vdc grid pin 3
0vdc grid cap 8.6vdc cathode pin 4
24a detector....
2.1v pins 1&5 filament plate 0vdc 6.6vdc grid pin 3
0vdc grid cap, 1.1vdc cathode pin 4
27....
2.1v pins 1&5 filament plate 150vdc pin 2 -0.6vdc grid pin 3
0vdc cathode pin 4
71s....
4.8v pins 1&4 filament plate 325vdc pin 2 -8vdc grid pin 3
80...
700vac between pins 2&3 5v pins 1&4 filament
Just a novice, but isn't the plate voltage on the detector tube 24a supposed to be around 35vdc. Can someone narrow down the problem for me? THANKS!!! Joe
Did some extensive checks & found/did the lollowing....
Replaced all resistors out of tolorence. Ordered caps so I can recap radio. While waiting for caps, checked all voltages. Found the following...
All power xformer voltages between the taps are good.
24A 1st & 2nd rf....
2.1v pins 1&5 filament plate 325vdc pin2 114vdc grid pin 3
0vdc grid cap 8.6vdc cathode pin 4
24a detector....
2.1v pins 1&5 filament plate 0vdc 6.6vdc grid pin 3
0vdc grid cap, 1.1vdc cathode pin 4
27....
2.1v pins 1&5 filament plate 150vdc pin 2 -0.6vdc grid pin 3
0vdc cathode pin 4
71s....
4.8v pins 1&4 filament plate 325vdc pin 2 -8vdc grid pin 3
80...
700vac between pins 2&3 5v pins 1&4 filament
Just a novice, but isn't the plate voltage on the detector tube 24a supposed to be around 35vdc. Can someone narrow down the problem for me? THANKS!!! Joe
