[Eliot Ness]

Here's an accurate schematic:

http://www.nostalgiaair.org/PagesByModel...040317.pdf

Note it shows both the DC (top) version and the AC (bottom) version. You'll see the volume control labeled as such on the DC version, on the AC version it's in the same place but not labeled.

The following document might help you also, it has voltages, component values, and tips on the 18:

http://www.nostalgiaair.org/References/A...la18-2.htm