The Family DuMont

[Phil Nelson]

This kind of divergence is common with "split sound" TVs like this, where the sound signal is picked off fairly early and the audio section has its own series of IF amplifiers, in parallel to the video IF amplifiers, so to speak. (An alternative, slightly more modern design is to pick off the audio signal farther downstream, after the IF amplification has been performed.)

Look carefully at the schematic and your manual's sound alignment instructions, and you should be able to do what old_coot88 says: gently nudge the audio IF alignment to match up with your current video IF alignment, so that they both tune in together. I think you will find it considerably easier than video alignment.

Phil Nelson