Bob Weaver
Forum Participant

From looking at the schematic and the photo, it appears to me that the automatic tuning has no electronics involved; it’s just a motor and some cam actuated switches. So, I would check to see that the switch contacts are not bent or otherwise damaged, and that the cams are set up to actuate the switch correctly.

The radio does have an AFC (automatic frequency control) circuit, which I thought at first may be linked to the motorized tuning, but I don’t think so. It looks as if the AFC simply corrects electronically for any sloppiness in the mechanical tuning.