[RodB]

Try touching the center terminal of the volume control with a screwdriver. If you hear a hum then you know the audio circuits will produce sound. When the signal generator arrives you can start with the 455 kc radio signal sections as if you are doing an alignment. All you need to do right now is identify the point where the signal is lost.

If you don't hear a hum then you can start with an audio signal to the grid of the 50L6 tube and work back to the grid of the 12SQ7 triode.