Next check the tube pin marked "P" on 12BA6 intermediate frequency amplifier tube, which should read 205 to 220 volts "D.C.". If incorrect or no voltage, check or replace the following:
 

Next check the tube pin marked "S" on 12BA6 intermediate frequency tube, which should read 70 to 80 volts "D.C.". If incorrect or no voltage, check or replace the following:
 

Next check the tube pin marked "P" on 12BE6 tube, which should read 205 to 220 volts "D.C.". If incorrect or no voltage, check or replace the following:

Next check the tube pin marked "S" on 12BE6 tube, which should read 70 to 80 volts "D.C.". If incorrect or no voltage, check or replace the following:
 

Next check the tube pin marked "P" on 12BA6 radio frequency tube, which should read 140 to 150 volts "D.C.". If incorrect or no voltage, check or replace the following:
 

Next check the tube pin marked. "S", on 12BA6 radio frequency tube, which should read 70 to 80 volts "D.C.". If incorrect or no voltage, check or replace the following:
 

We have now checked the tubes, vibrator and voltages. If these are correct and radio does not play, the trouble will be in the grid circuit of the radio. To continue, it will be necessary to check the grid circuit by means of signal tracing.

 

Turn on signal generator and set in audio position to obtain a 400 cycle audio signal. Ground one lead of signal generator to radio chassis.

NOTE: To protect the signal generator from "D.C." voltage, place a .05 mfd condenser in signal generator lead between the signal generator and the end of the test lead. Adjust signal generator volume about 3/4 open to obtain a strong signal.

With signal generator lead touch tube pin marked "P" on the 12V6GT tube. If no signal, check or replace the following:
 

1.	Check or replace condenser, item 21 on circuit diagram and parts
	layout.
2.	Check or replace audio transformer, item 54 on circuit diagram and
	parts layout.
3.	Check or replace speaker, item 53 on circuit diagram and parts layout.

Next touch tube pin marked "G" on I2V6GT tube. If no signal, check or replace the following:
 

1.	Check or replace I2V6GT tube.
2.	Check or replace I2V6GT tube socket.
3.	Check or replace condenser, item 20 on circuit diagram and parts
	layout.

Next touch tube pin marked "P" on 12AV6 tube.
If no signal, check or replace the following:
 

1.	Check or replace condenser, item 17 on circuit diagram and parts
	layout.
2.	Check or replace resistors, items 40 and 42 on circuit diagram and
	parts layout.

Next touch tube pin marked "G" on 12AV6 tube.
If no signal, check or replace the following:
 

1.	Check or replace 12AV6 tube.
2.	Check or replace 12AV6 tube socket.